By state
- Note: The list below automatically compiles all potential and certified ballot measures being tracked by Ballotpedia. Sometimes a measure that has been abandoned by petitioners or in the legislature will still be listed until a legal deadline passes. As more deadlines pass in any given year, the list will more accurately represent which measures will actually go before voters in the current year.
Alabama
- Alabama Ten Year Road and Bridge Construction Program, Amendment 3 (2010)
- Alabama Transportation Tax, Amendment 2 (1920)
- Alabama Road Tax, Amendment 3 (1920)
- Alabama Transportation Taxes, Amendment 1 (1952)
- Alabama Regional Airport Amendment (1994)
- Alabama Authorization of Toll Districts and Toll District Revenue Bond Debt in Baldwin County, Amendment 12 (2016)
Alaska
- Alaska Transportation Bonds, Proposition A (2008)
- Alaska Railroad Initiative, Measure 1 (August 1990)
- Alaska Reduce Transportation Regulation Initiative (1984)
- Alaska Transportation, Bonding Proposition B (2002)
- Alaska Proposition 2, Ferry and Road Bond Measure (1960)
- Alaska Ferry Construction Bond, Proposition 3 (1966)
- Alaska Highway Construction Bond, Proposition 5 (1966)
- Alaska Airport Construction Bond, Proposition 6 (1966)
- Alaska Highway Construction Bond, Proposition 2 (1968)
- Alaska Airport Construction Bond, Proposition 4 (1968)
- Alaska Ferry Construction Bond, Proposition 7 (1968)
- Alaska Highway Construction Bond, Proposition 4 (1970)
- Alaska Highway Maintenance Bond, Proposition 8 (1970)
- Alaska Airport Construction Bond, Proposition 9 (1970)
- Alaska Ferry Construction Bond, Proposition 10 (1970)
- Alaska Highway Construction Bond, Proposition 2 (1972)
- Alaska Airport Construction Bond, Proposition 5 (1972)
- Alaska Flood Control and Small Boat Harbor Bond, Proposition 7 (1972)
- Alaska Port Facility Development Bond, Proposition 2 (1974)
- Alaska Trunk and Secondary Airport Bond, Proposition 4 (1974)
- Alaska Transportation Construction Bond, Proposition 5 (1974)
- Alaska Transportation Maintenance Bond, Proposition 13 (1976)
- Alaska Airport Construction Bond, Proposition 14 (1976)
- Alaska Transportation Project Bonds Question, Bonding Proposition A (2012)
- Alaska Proposition 6, Bush Airfields Bond Measure (1960)
- Alaska Proposition 3, Trunk Airport Bond Measure (1962)
- Alaska Transportation Bond, Proposition 10 (1978)
- Alaska Transportation Projects, Bonding Proposition F (1980)
Arizona
- Arizona Proposition 200, Railroad Anti-Featherbedding Initiative (1964)
- Arizona Proposition 101, Railroads as Public Service Corporations Amendment (1980)
- Arizona Proposition 300, Abolishment of Motor Vehicle Emissions Inspections Measure (1976)
- Arizona Proposition 105, Distribution of Vehicle Tax Amendment (1974)
- Arizona Proposition 108, Motor Vehicle Taxes Amendment (1972)
- Arizona Proposition 104, Vehicle and Gas Tax Revenues Amendment (1970)
- Arizona Measure Nos. 306-307, Repeal of 1925 Automobile Title Law Referendum (1928)
- Arizona Measure Nos. 302-303, Passenger Transportation on Railroads Regulation Referendum (1914)
- Arizona Measure Nos. 102-103, Bonds for Highway from the Hassayampa River to Colorado River and Colorado River Bridge Amendment (1924)
- Arizona Measure Nos. 312-313, Motor Vehicle Department Initiative (1928)
- Arizona Measure Nos. 310-311, Creation of State Highway Department Initiative (1920)
- Arizona Measure Nos. 100-101, Fuel Tax Revenue Dedicated to Roads Amendment (1952)
- Arizona Measure Nos. 306-307, Motor Vehicle Department Initiative (1926)
- Arizona Measure Nos. 110-111, Uniform Auto Tax Amendment (1940)
- Arizona Measure Nos. 108-109, Bonds for Highway Construction Amendment (1930)
- Arizona Measure Nos. 306-307, Train Headline Regulations Referendum (1912)
- Arizona Measure Nos. 104-105, Highway Bonds Amendment (1914)
- Arizona Measure Nos. 106-107, Tax Exemptions for Public Corporations Amendment (1932)
- Arizona Measure Nos. 304-305, State Highway Department Finance Initiative (1926)
- Arizona Measure Nos. 304-305, State Highway Commission Initiative (1924)
- Arizona Measure Nos. 110-111, Automobile Tax Exemption Amendment (1930)
- Arizona Measure Nos. 304-305, Train Employee Regulations Referendum (1912)
- Arizona Measure Nos. 100-101, Bonds for Highway from Hassayampa River to Colorado River Amendment (1922)
- Arizona Measure Nos. 312-313, Passenger Train Rates Referendum (1912)
- Arizona Measure Nos. 310-311, Train Car Limits Referendum (1912)
- Arizona Measure Nos. 308-309, Train Engineer and Conductor Regulations Referendum (1912)
- Arizona Proposition 105, Automobile Accident Exemption from Right to Recovering Damages Initiative (1990)
- Arizona Measure Nos. 304-305, Percentage of Gas Tax Revenue Distributed to Cities Initiative (1940)
- Arizona Prohibit Taxes or Fees on Miles Traveled in Motor Vehicle Amendment (2026)
- Arizona Prohibit Photo Enforcement Systems for Speeding or Failure to Obey Traffic Control Devices Measure (2026)
Arkansas
- Arkansas Sales Tax Increase Amendment, Issue 1 (2012)
- Arkansas Local Road Construction, Proposed Amendment 53 (1964)
- Arkansas Full Railroad Crew Laws, Initiated Act 1 (1972)
- Arkansas Highway Bond Refunding, Proposed Amendment 28 (1938)
- Arkansas Regulation of Rail Rates, Amendment 2 (1898)
- Arkansas County Road Tax, Amendment 3 (1894)
- Arkansas Vote for Bridge Bonds Amendment (1932)
- Arkansas State Highway Commission, Amendment 42 (1952)
- Arkansas Repeal of Full Crew Laws, Initiative 1 (1958)
- Arkansas Motor Vehicle Commission, Referred Act 199 (1962)
- Arkansas Full Railroad Crew Laws, Initiated Act 1 (1970)
- Arkansas Interstate Highway Bonds, Referred Question 1 (December 2005)
California
- California Proposition 2, Loans of Transportation-Related Revenues to the General Fund Amendment (1998)
- California Proposition 51, Vehicle Tax Revenue for Transportation Projects Initiative (2002)
- California Proposition 42, Allocation of Gasoline Sales Tax Revenue Amendment (March 2002)
- California Proposition 1A, Transportation Funding Amendment (2006)
- California Proposition 1B, Transportation Bond Measure (2006)
- California Proposition 181, Transportation and Rail Project Bond Measure (1994)
- California Proposition 157, Sunset on the Collection of Tolls Amendment (1992)
- California Proposition 108, Passenger Rail Bond Measure (June 1990)
- California Proposition 111, Gasoline Tax Increase Amendment (June 1990)
- California Proposition 116, Rail Transportation Bond Initiative (June 1990)
- California Proposition 8, Motor Vehicle Fees Referendum (1928)
- California Proposition 91, Dedicated Transportation Funds Initiative (February 2008)
- California Proposition 3, Highway Completion Bond Measure (1916)
- California Proposition 7, State Highway Bond Repayment Measure (1916)
- California Proposition 9, State Highway Bonds Initiative (1920)
- California Proposition 30, Railroad Franchises Initiative (1922)
- California Proposition 1, Common Carrier Gross Receipts Tax Initiative (1924)
- California Proposition 2, Highway Usage Taxation Amendment (1926)
- California Proposition 7, Short-Line Steam Railroad Taxation Amendment (1926)
- California Proposition 4, Gasoline Distributor Tax Initiative (1926)
- California Proposition 8, State Highways Initiative (1926)
- California Proposition 9, State Right of Way Amendment (1928)
- California Proposition 4, Street Railways Tax Amendment (1930)
- California Proposition 6, Toll Bridge Tax Collection Amendment (1930)
- California Proposition 9, San Francisco Harbor Bond Measure (1930)
- California Proposition 18, Motor Vehicle Tax Amendment (1930)
- California Proposition 4, Highway Taxation Usage Amendment (1932)
- California Proposition 4, Highway and Traffic Safety Commission Initiative (1938)
- California Proposition 9, Vessel Tax Exemption Amendment (1940)
- California Proposition 3, Number of Brakemen on Trains Initiative (1948)
- California Proposition 5, Freight and Passenger Ship Tax Exemption Amendment (1954)
- California Proposition 8, Vessel Taxation Exemption Amendment (1954)
- California Proposition 125, Allocation of Gas Tax Revenue to Railroad Equipment Amendment (1990)
- California Proposition 3, Vehicle and Gas Tax and Fees Amendment (1938)
- California Proposition 23, Public Service Commission of the State of California Amendment (1936)
- California San Francisco Depot, Proposition 2 (1892)
- California State Highway Bond Measure (1910)
- California Proposition 23, Railroad Rate Increase Procedures Amendment (October 1911)
- California Proposition 19, Free or Reduced Price Railroad Tickets for Government Officials Amendment (October 1911)
- California Proposition 8, Vessel Taxation Amendment (1914)
- California Proposition 1A, High-Speed Rail Bond Measure (2008)
- California Proposition 185, Gas Tax Increase for Transportation Programs and Projects Initiative (1994)
- California Proposition 3, Use of Parking Meter Income for Off-Street Parking Amendment (June 1950)
- California Proposition 18, Use of Fuel Taxes and License Fees Amendment (1970)
- California Proposition 156, Transportation Improvements Bond Measure (1992)
- California Proposition 74, Transportation Bond Measure (June 1988)
- California Proposition 5, Use of Fuel Taxes and License Fees Amendment (June 1974)
- California Proposition 9, Use Gas Tax Revenue for Highway Bond Payments Measure (June 1933)
- California Proposition 10, Use Gas Tax Revenue for Highway Bond Payments Measure (June 1933)
- California Proposition 1, State Highways Bond Amendment (July 1919)
- California Proposition 10, Taking of Property for Schools and Airports Amendment (1958)
- California Proposition 10, Vehicle Registration Fee and Taxes Usage Amendment (1936)
- California Proposition 11, Bonds for Streets and Roads Amendment (1958)
- California Proposition 12, Railroad Commission Control and Regulation of Services Amendment (October 1911)
- California Proposition 14, Use of Funds for Separation of Grade Districts Amendment (1960)
- California Proposition 14, Vessel Taxation Exemption Amendment (1932)
- California Proposition 15, Street and High Improvement Repayment Amendment (1936)
- California Proposition 17, Railroad Grade Separations Bond Measure (1928)
- California Proposition 17, Railroad Labor Initiative (1964)
- California Proposition 17, Street and Highway Revenues for Parking Facilities Amendment (1954)
- California Proposition 69, Transportation Taxes and Fees Lockbox and Appropriations Limit Exemption Amendment (June 2018)
- California Proposition 6, Voter Approval for Future Gas and Vehicle Taxes and 2017 Tax Repeal Initiative (2018)
Colorado
- Colorado Amendment No. 6, Board of Directors for the Regional Transportation District Initiative (1980)
- Colorado Amendment 26, Creation of a Fixed Guideway System Initiative (2001)
- Colorado Limit on Motor Fuel Taxation, Measure 6 (1932)
- Colorado Bonds for Highway Construction, Measure 4 (1928)
- Colorado Referendum A, Funds for Transportation Projects Bond Measure (1999)
- Colorado Amendment 1, Funds for Transportation Improvement Projects Initiative (1997)
- Colorado Referred Law No. 11, No-Fault Insurance System Initiative (1972)
- Colorado Funds for State Highway Commission, Measure 20 (1912)
- Colorado Bonded Indebtedness for State Highways, Measure 31 (1912)
- Colorado Tunnel Through James Peak, Measure 32 (1912)
- Colorado State Road Fund Increase for Highway Construction, Measure 7 (1914)
- Colorado Moffat, Monarch and San Juan Tunnels, Measure 5 (1920)
- Colorado Bonds for Public Highways, Measure 8 (1920)
- Colorado Bonds for Public Highways, Measure 1 (1922)
- Colorado General Assembly to Enact Motor Vehicle Taxes, Measure 3 (1926)
- Colorado Petroleum and Motor Vehicle Taxes, Measure 8 (1926)
- Colorado Taxation on Petroleum and Motor Vehicles for Roads, Measure 5 (1934)
- Colorado Limit on Motor Fuel Tax, Measure 6 (1934)
- Colorado Tax on Motor Vehicle Ownership, Measure 1 (1936)
- Colorado Amendment No. 2, Taxation of Mobile Homes and Construction Equipment Amendment (1966)
- Colorado Amendment No. 7, Aviation Fuel Excise Tax Usage Amendment (1974)
- Colorado Amendment 52, Severance Taxes for Highway Projects Initiative (2008)
- Colorado Proposition 109, "Fix Our Damn Roads" Transportation Bond Initiative (2018)
- Colorado Statutory Referendum No. 6, Revenue Anticipation Warrants for Highway Maintenance Bond Measure (1954)
- Colorado Referendum B, Excess Funds for Transportation and Education Measure (1998)
- Colorado Proposition 110, "Let's Go Colorado" Transportation Bond and Sales Tax Increase Initiative (2018)
- Colorado Proposition CC, Retain Revenue for Transportation and Education TABOR Measure (2019)
Florida
- Florida Amendment 1, Monorail System Initiative (2000)
- Florida Amendment 6, Repeal of the High Speed Ground Transportation System Initiative (2004)
- Florida Amendment 2, Transportation Bonds Amendment (1974)
- Florida Amendment 4, Motor Vehicle Licensing Revenue for Education Amendment (1972)
- Florida Amendment 2, Use of State Funds for Toll Roads Amendment (1954)
- Florida Amendment 1, Funds of Education Capital Projects Amendment (1952)
- Florida Amendment 1, Fuel Taxes Amendment (1948)
- Florida Motor Vehicle Taxation Amendment (1930)
- Florida Road System Bonds Amendment (1920)
- Florida Amendment 4, Transportation Bonds Amendment (1988)
- Florida Amendment 8, Civil Traffic Hearing Officer System Amendment (1988)
- Florida Amendment 5, Second Gas Tax Limitation Amendment (1980)
- Florida Amendment 12, Second Gas Tax Extension Amendment (1964)
- Florida Amendment 5, Motor Vehicle Definition for Taxation Amendment (1965)
- Florida Amendment 4, Bonds for Roads Amendment (1965)
Georgia
- Georgia Trauma Care Funding, Amendment 2 (2010)
- Georgia Transportation Project Contracts, Amendment 3 (2010)
- Georgia Special License Plates, Amendment 3 (2006)
- Georgia Public Highways, Amendment 4 (1926)
- Georgia Chatham County Road Bonds, Amendment 6 (1926)
- Georgia Street Improvement Bonds, Amendment 5 (1928)
- Georgia City of Lakeland Railway, Amendment 11 (1930)
- Georgia State Highway Funds, Amendment 8 (1932)
- Georgia Highway Bonds, Amendment 11 (June 1939)
- Georgia Coastal Highway District, Amendment 20 (June 1939)
- Georgia Savannah Airport Commission, Amendment 9 (1950)
- Georgia DeKalb County Street Improvements, Amendment 18 (1950)
- Georgia Muscogee County Street Improvements, Amendment 33 (1950)
- Georgia Muscogee County Street Improvement Bonds, Amendment 34 (1950)
- Georgia Highway Funds, Amendment 2 (1952)
- Georgia Brunswick Port Authority, Amendment 4 (1958)
- Georgia Revenue Certificates for Public Transportation, Amendment 9 (1958)
- Georgia Fuel Tax for Highways, Amendment 1 (1960)
- Georgia Brunswick Ports Authority, Amendment 17 (1960)
- Georgia Taxes for Public Transportation, Amendment 9 (1962)
- Georgia State Highway Board, Amendment 1 (1964)
- Georgia Motor Vehicle Taxation, Amendment 8 (1964)
- Georgia Taxes for Public Transportation, Amendment 14 (1966)
- Georgia State Highway Board, Amendment 4 (1972)
- Georgia Federal Funds for Transportation, Amendment 24 (1976)
- Georgia Regulation of Roadsides, Amendment 26 (1976)
- Georgia Voter Approval of Road Construction Authorities, Amendment 6 (1986)
- Georgia Transportation Trust Fund, Amendment 5 (1992)
- Georgia Roadside Enhancement and Beautification Fund, Amendment 4 (1998)
- Georgia Indemnification for State Highway Employees, Amendment 5 (2000)
Idaho
- Idaho Airport Debt, HJR 5 (2010)
- Idaho Railroad Taxation Exemption, SJR 5 (1906)
- Idaho Revenue from Motor Vehicles, HJR 3 (1940)
- Idaho Public Funds for Transportation to Schools, HJR 35 (1972)
Illinois
- Illinois Transportation Taxes and Fees Lockbox Amendment (2016)
Iowa
- Iowa Fuel Tax Allocation, Amendment 1 (1942)
Kentucky
- Kentucky Highway Fund Taxes Referendum (1945)
- Kentucky Highways and Parks Bonds Ballot Question (1960)
Louisiana
- Louisiana Highway Projects Act, Ballot Measure 6 (October 2003)
- Louisiana Transportation Infrastructure Bank, Amendment 4 (2014)
- Louisiana Transportation Infrastructure Bank, Amendment 2 (2015)
- Louisiana Baton Rouge Airport Amendment (1968)
- Louisiana Airport Bond Issue (1968)
- Louisiana Transportation Fund Amendment (October 1989)
- Louisiana Amendment 3, Dedicate New Taxes on Fuel to Transportation Construction Fund Measure (October 2017)
- Louisiana Amendment 4, No Dedication of Transportation Trust Fund Revenue to State Police Amendment (2018)
Maine
- Maine Turnpike Widening, Question 6 (1997)
- Maine Comprehensive Transportation Policy and Turnpike Authority, Question 1 (1991)
- Maine Transportation Facilities and Infrastructure Improvements, Question 3 (1999)
- Maine Excise Tax on Railroads, Referendum Question (1928)
- Maine Government Aid for Highway Bridges, Question Two (1916)
- Maine Transportation Development and Improvement, Question 3 (2001)
- Maine Transportation Improvements and Air-Medical System, Question 6 (2003)
- Maine Transportation Improvements, Question 4 (1997)
- Maine Transportation Improvements, Question 2 (2005)
- Maine Transportation Reconstruction and Rehabilitation Bond, Question 3 (2013)
- Maine Portland Bridge Reconstruction, P. & S. L. 1909, c. 404 (1910)
- Maine Bond Issue for State Highways, Question No. 2 (1912)
- Maine Port Facilities Bond Issue, Amendment No. 3 (1919)
- Maine Highways and Bridges Bond Issue Increase, Amendment No. 5 (1919)
- Maine State Aid Highways Bond Issue, Amendment No. 2 (1921)
- Maine Full-Time State Highway Commission (1922)
- Maine Kennebec Bridge Bond Issue, Amendment No. 1 (1925)
- Maine Highways and Bridges Bond Issue, Amendment No. 2 (1925)
- Maine Waldo-Hancock Bridge, Amendment No. 2 (1929)
- Maine Highways and Bridges Bond Issue Increase, Amendment No. 3 (1929)
- Maine State Aid Highways Bond Issue, Amendment No. 2 (1935)
- Maine Deer Isle-Sedgwick Bridge Bond Issue, Amendment No. 4 (1935)
- Maine Deer Isle-Sedgwick Bridge District, Referendum Question (1935)
- Maine General Highway Fund Use, Question No. 5 (1936)
- Maine Highways and Bridges Bond Issue Increase, Proposed Amendment to the Constitution (1939)
- Maine Highway Fund Use (1944)
- Maine Fore River Bridge Bond Issue, Proposed Constitutional Amendment No. 4 (1950)
- Maine Fore River Bridge Toll, Referendum Question No. 4 (1951)
- Maine Bangor-Brewer Toll Bridge Bond Issue, Referendum Question No. 2 (1951)
- Maine Lewiston-Auburn Toll Bridge Bond Issue, Referendum Question No. 3 (1951)
- Maine Jonesport Reach Bridge Bond Issue, Referendum Question (1955)
- Maine State Highways Bond Issue, Referendum Question No. 1 (1957)
- Maine Ferry Service Bond Issue, Referendum Question No. 2 (1957)
- Maine Vehicle License and Registration Fees, Referendum Question (1958)
- Maine Passagassawaukeag River Bridge, Referendum Question No. 1 (1959)
- Maine State Highways Construction, Referendum Question No. 2 (1959)
- Maine State Highways Construction, Referendum Question No. 1 (1961)
- Maine State Highways Construction, Referendum Question No. 2 (1963)
- Maine Chebeague Island Bridge and Causeways, Referendum Question No. 5 (1963)
- Maine State Highways Construction, Referendum Question No. 2 (1965)
- Maine State Highway Commission Office Building, Referendum Question No. 1 (1966)
- Maine Airport Construction and Improvement, Referendum Question No. 2 (1966)
- Maine State Route 6 Reconstruction, Referendum Question No. 1 (1967)
- Maine Lewiston-Auburn Bridge, Referendum Question No. 3 (1967)
- Maine Airport Construction, Extension and Improvement, Referendum Question No. 5 (1967)
- Maine State Highways Construction, Referendum Question No. 1 (1968)
- Maine Lewiston-Auburn Bridge, Referendum Question No. 4 (1968)
- Maine Norridgewock Airport Appropriation, Referendum Question No. 2 (1969)
- Maine Matinicus Island Docking Facilities, Referendum Question No. 6 (1969)
- Maine State Highways Construction, Referendum Question No. 11 (1969)
- Maine State Highways Construction, Referendum Question (1970)
- Maine State Route 6 Reconstruction, Referendum Question No. 1 (1970)
- Maine Kennebec Bridge, Referendum Question No. 3 (1972)
- Maine State Parks, Airports and Maintenance Building, Referendum Question No. 4 (1972)
- Maine State Highways Construction, Referendum Question No. 1 (1972)
- Maine Airport Moneys Reallocation, Referendum Question No. 3 (1972)
- Maine Weight of Commercial Vehicles and Related Provisions, Referendum Question (1974)
- Maine State Highways Construction, Referendum Question No. 1 (1974)
- Maine Highway and Bridge Improvement Program, Referendum Question No. 2 (1975)
- Maine Airport Improvements, Referendum Question No. 6 (1977)
- Maine Highway and Bridge Improvement Program, Referendum Question No. 7 (1977)
- Maine Highway and Bridge Improvement, Referendum Question No. 1 (1979)
- Maine Public Fish Piers, Airports and Transportation Improvements, Referendum Question No. 2 (1979)
- Maine Agricultural and Economic Development, Referendum Question No. 1 (1981)
- Maine Highway and Bridge Improvement, Referendum Question No. 2 (1981)
- Maine Highway and Bridge Improvement, Bond Issue 3 (1983)
- Maine Economic Development, Bond Issue 5 (1983)
- Maine Highway, Bridge and Airport Improvements, Bond Issue 4 (1985)
- Maine Rail Line Acquisition, Lease and Rehabilitation, Bond Issue 5 (1985)
- Maine Coastal Access and Harbor, Ferry and Laboratory Improvements, Bond Issue 6 (1986)
- Maine School Bus Acquisition, Question 8 (1987)
- Maine Highway, Bridge and Airport Improvements and Groundwater Pollution, Question 9 (1987)
- Maine Highway, Bridge, Airport and Harbor Improvements, Question 7 (1989)
- Maine Rail Lines, Trackage Rights and Easements Rights, Question No. 2 (1990)
- Maine Highway, Bridge, Airport, Ferry Vessel and Harbor Improvements Matching Federal Funds, Question 8 (1991)
- Maine Municipal Improvements to Port Facilities, Question 2 (1992)
- Maine Rail Service Continuation in Piscataquis, Penobscot and Waldo Counties, Question 6 (1992)
- Maine Transportation Facilities Improvements Job Creation and Protection, Question 1 Part B (1992)
- Maine Highway, Bridge, Airport, Cargo Port and Ferry Service Improvements, Question 3 (1993)
- Maine Port and Rail Facilities Improvements, Question 6 (1994)
- Maine Highway, Bridge, Airport and Cargo Port Improvements for Economic Development, Question 2 (1995)
- Maine Safety Belts Required for Four Years and Older, Question 8 (1995)
- Maine Surface, Air, Water and Rail Transportation Improvements, Question 1 (1998)
- Maine State Highways Bond Issue, Referendum Question No. 1 (1951)
- Maine Transportation Improvements, Question 1 (June 2007)
- Maine Fish Hatcheries Water, Dams and Transportation Improvements, Question 1 (June 2008)
- Maine Auto Excise Tax Repeal, Question 2 (2009)
- Maine Transportation Improvements, Question 6 (2009)
- Maine Job Creating Transportation Projects, Question 3 (June 2010)
- Maine Transportation Bond, Question 3 (2015)
- Maine Question 3, Transportation Bond Issue (2017)
- Maine Question 3, Transportation Bond Issue (2018)
- Maine Question 1, Transportation Infrastructure Bond Issue (2019)
- Maine Question 2, Transportation Infrastructure Bond Issue (July 2020)
- Maine Question 2, Transportation Infrastructure Bond Issue (2021)
- Maine Question 4, "Right to Repair Law" Vehicle Data Access Requirement Initiative (2023)
Maryland
- Maryland Transportation Fund Amendment, Question 1 (2014)
- Maryland Roads, Amendment 2 (1905)
- Maryland State Roads Commission Property Acquisition, Amendment 3 (1942)
- Maryland Chesapeake Bay Toll Bridge, Amendment 17 (1966)
Massachusetts
- Massachusetts Question 1, Tax on Income Above $1 Million for Education and Transportation Amendment (2022)
- Massachusetts Question 1, "Right to Repair Law" Vehicle Data Access Requirement Initiative (2020)
- Massachusetts Question 4, Remove Proof of Citizenship or Immigration Status for Driver's License Applications Referendum (2022)
Michigan
- Michigan Sales Tax Increase for Transportation Amendment, Proposal 1 (May 2015)
- Michigan Regulation of Railroad Rates, Proposal 4 (1870)
- Michigan Restricting Railroad Consolidations, Proposal 5 (1870)
- Michigan Railroad Aid Bonds, Proposal 6 (1870)
Minnesota
- Minnesota Motor Vehicle Sales Tax, Amendment 1 (2006)
- Minnesota Railroad Loans, Amendment 1 (April 1858)
- Minnesota Road and Bridge Fund, Amendment 4 (1898)
- Minnesota Increase Road and Bridge Tax, Amendment 2 (1906)
- Minnesota Unlimited Road and Bridge Tax, Amendment 2 (1908)
- Minnesota Cost of Road and Bridge Projects, Amendment 1 (1910)
- Minnesota State Tax for Roads and Bridges, Amendment 1 (1912)
- Minnesota State Trunk Highway System, Amendment 1 (1920)
- Minnesota Revenue for Trunk Highway Fund, Amendment 1 (1924)
- Minnesota Motor Fuel Tax Revenue, Amendment 1 (1928)
- Minnesota New Routes for Trunk Highway System, Amendment 2 (1934)
- Minnesota Airport Operation, Amendment 1 (1944)
- Minnesota Petroleum Excise Tax, Amendment 1 (1948)
- Minnesota Petroleum Excise Tax, Amendment 3 (1950)
- Minnesota Motor Vehicle Excise Tax, Amendment 5 (1952)
- Minnesota Highway Funding, Amendment 2 (1956)
- Minnesota Railroad Taxes, Amendment 3 (1974)
- Minnesota Motor Fuel Taxes and Highway Bonds, Amendment 1 (1976)
- Minnesota Highway Bond Restrictions, Amendment 2 (1980)
- Minnesota Highway Bond Restrictions, Amendment 2 (1982)
- Minnesota Bonding Authority for Railroad Facilities, Amendment 4 (1982)
Mississippi
- Mississippi Railroad, Amendment 2 (1978)
Missouri
- Missouri State Highway System, Issue 5 (1924)
- Missouri Amendment 3, Fuel Tax for Highway Maintenance Initiative (2004)
- Missouri Proposition A, Large Commercial Vehicles on Highways Referendum (April 1982)
- Missouri Amendment 7, Reduce Motor Vehicle License Fees Initiative (1940)
- Missouri Amendment 6, Motor Vehicle License Fees Initiative (1940)
- Missouri Amendment 4, Special Tax for Road Districts Measure (1920)
- Missouri Proposition 5, Funding the State Highway System Initiative (1924)
- Missouri Proposition 3, State Highway Bond Initiative (1928)
- Missouri Amendment 6, Fuel Tax and State Highway Commission Initiative (1938)
- Missouri Amendment 2, Transportation Funding and Department Consolidation Measure (1979)
- Missouri Temporary Sales and Use Tax Increase for Transportation, Amendment 7 (August 2014)
- Missouri Amendment 5, Gasoline Tax Measure (August 1978)
- Missouri Amendment 1, Gas Tax Increase Referendum (April 1950)
- Missouri Proposition D, Gas Tax Increase, Olympic Prize Tax Exemption, and Traffic Reduction Fund Measure (2018)
- Missouri Proposition 5, Motor Vehicle Fuel Tax Referendum (1938)
- Missouri Amendment 2, Road and Bridge Maintenance Tax Measure (1908)
- Missouri Amendment 7, Public Roads and Highways Tax Measure (1908)
- Missouri Amendment 8, Indebtedness for Subway Construction Measure (1908)
Montana
- Montana Repeal Retail Motor Fuel Marketing Act, I-134 (1998)
- Montana Vehicle Tax Revision, LR-115 (2000)
- Montana Bond for Highways, R-23 (1920)
- Montana Gasoline Tax for Roads, I-31 (1926)
- Montana State Highway Treasury Anticipation Debenture Act, R-35 (May 1931)
- Montana State Highway Treasury Anticipation Debentures Act, I-41 (1938)
- Montana State Highway Treasury Anticipation Debentures Act, R-49 (June 1945)
- Montana Gasoline Tax, I-55 (1952)
- Montana Use of Highway Taxes, Amendment 1 (1956)
- Montana Seatbelt Use, I-110 (1988)
Nebraska
- Nebraska Mandatory Seat Belts, Referendum 2 (1986)
- Nebraska Gas Tax, Amendment 1 (1944)
- Nebraska Gas Tax, Referendum 1 (1950)
- Nebraska Vehicle Registration Fee, Referendum 2 (1950)
- Nebraska Motor Vehicle Tax, Amendment 2 (1952)
- Nebraska Ton Mile Tax, Initiative 1 (1956)
- Nebraska Allocation of Vehicle Fees, Amendment 1 (1956)
- Nebraska Motor Vehicle Taxes, Amendment 5 (1964)
- Nebraska Transportation for Private Schools, Amendment 6 (1966)
- Nebraska Bonds for Highway Construction, Amendment 14 (1968)
New Jersey
- New Jersey Public Question 2, Gas Taxes Earmarked for Transportation Trust Fund (1995)
- New Jersey Vehicle Fee for Transportation System Amendment, ACR 37 (2014)
- New Jersey Dedication of All Gas Tax Revenue to Transportation, Public Question 2 (2016)
New York
- New York Transportation Bond Act, Proposal 2 (2005)
- New York Proposition Number One (1967)
- New York Roads and Bridges Bond Act, Proposal 1 (1988)
- New York Transportation and Infrastructure Bond, Proposal 1 (1983)
- New York State Debt for Improved Transportation , Proposal 1 (1979)
- New York Rail Preservation Bond Act, Proposition 1 (1974)
- New York State Debt for Mass Transportation, Proposition 1 (1967)
- New York Land for the Improvement of Piseco Airport, Amendment 9 (1965)
- New York Purchase of Railroad Commuter Cars, Amendment 3 (1961)
- New York Highway Relocation in Hamilton County, Amendment 7 (1961)
- New York Highway on Forest Preserve Land, Amendment 2 (1959)
- New York Forest Land for Highway Purposes, Amendment 7 (1957)
- New York Bond for Construction of Highways and Parkways, Proposition 1 (1956)
- New York State Bonds for State Highways, Amendment 1 (1955)
- New York Use of Railroad Bonds for Highways and Parkways, Amendment 1 (1941)
- New York Railroad Grade Crossings, Amendment 3 (1938)
- New York City Debt for Transit Facilities, Amendment 9 (1938)
- New York Construction of State Highway in Forest Preserve, Amendment 3 (1933)
- New York Barge Terminal Canal Lands, Amendment 4 (1933)
- New York Elimination of Railroad Grade Crossings, Amendment 3 (1927)
- New York Highway Construction on Forest Preserve Land, Amendment 7 (1927)
- New York Highway Improvement, Amendment 5 (1905)
- New York Contract Bidding for Canal Projects Amendment (February 1854)
- New York State Debt for Transportation, Proposition 1 (1971)
North Dakota
- North Dakota Gasoline Motor Fuel Initiative (1940)
- North Dakota Financing Highway Construction Initiative (1944)
- North Dakota Safety Belts, Measure 2 (1994)
- North Dakota Vehicle Searches, Measure 6 (1992)
- North Dakota Prohibiting Parking Meters, Initiative 2 (1948)
- North Dakota Repeal Parking Meter Initiative (1948)
- North Dakota State Aid for Highways Referendum (1914)
- North Dakota State Athletic Commission Initiative (1920)
- North Dakota Legalizing Use of Parking Meters, Referendum 1 (1952)
- North Dakota Rural Roads Gas Tax, Initiative 3 (1954)
- North Dakota Tax Allocation, Initiative 4 (1954)
- North Dakota Highway Construction Bond Issue, Referendum 3 (1956)
- North Dakota Aviation Fuel Tax Referendum, Amendment 4 (1960)
- North Dakota Brakeman Requirements, Referendum 2 (1960)
- North Dakota Repeal Required Crew on Freight Trains, Initiative 3 (1964)
- North Dakota Five-Man Train Crew, Initiative 4 (1964)
- North Dakota Daily Passenger-Freight Train Requirements, Initiative 5 (1964)
- North Dakota Measure 5, Seat Belt Requirement Referendum (December 1989)
- North Dakota Safety Belt Law Repeal, Measure 4 (1994)
- North Dakota Remove Restrictions on Vehicle Window Tinting Initiative (2026)
Ohio
- Ohio Bond Limits for Inter-County Roads Amendment (September 1912)
- Ohio Aid for Railroads, Amendment 3 (August 1874)
Oregon
- Oregon Voter Approval for New Tolls Initiative (2026)
Pennsylvania
- Pennsylvania Question 8, Repeal Article 17 Concerning Railroads and Canals Amendment (May 1967)
Rhode Island
- Rhode Island Question 1, Transportation Bonds (1998)
- Rhode Island Transportation Bonds, Question 3 (2000)
- Rhode Island Transportation Bonds, Question 1 (2008)
- Rhode Island Capital Bonds for Transportation Question, Question 3 (2010)
- Rhode Island Question 3, Transportation Bonds (2002)
- Rhode Island Question 4, Quonset Point/Davisville Bonds (2002)
- Rhode Island Question 3, Transportation Bonds (2004)
- Rhode Island Question 5, Transportation Bonds Act (2006)
- Rhode Island Mass Transit Hub Infrastructure Bonds, Question 6 (2014)
- Rhode Island Permanent Registration, Proposal 2 (1950)
South Dakota
- South Dakota Use of Seat Belts, Referendum 2 (1994)
- South Dakota State Aircraft for State Use, Initiative 5 (2006)
- South Dakota Municipal Debt Limits for Water, Street Railways and Lighting (1902)
- South Dakota Headlights on Locomotives Required (1910)
- South Dakota Headlights on Locomotives Required, Measure 2 (1912)
- South Dakota State Coal Supplying and Roads Funding (1916)
- South Dakota Municipal Debt for Street Railways and Lighting (1920)
- South Dakota Motor Vehicle Registration (1930)
- South Dakota Taxes for Highways (1940)
Texas
- Texas Proposition 1, Rail Relocation and Improvement Fund Amendment (2005)
- Texas Proposition 2, Bonds for County Road Projects Amendment (2001)
- Texas Proposition 15, Mobility Fund Amendment (2001)
- Texas Proposition 7, County Road Work Amendment (1980)
- Texas Proposition 14, Transportation Projects Funding Amendment (September 2003)
- Texas Transportation Funding Amendment, Proposition 1 (2014)
- Texas Population Requirement for Private Road Work Amendment, Proposition 5 (2015)
- Texas Proposition 3, Road Tax Amendment (July 1915)
- Texas Proposition 6, Bonds for Highway Construction Amendment (1919)
- Texas Proposition 2, Road Plan for Harris County Amendment (August 1937)
- Texas Proposition 3, Tax Revenue Allocation Amendment (November 1946)
- Texas Proposition 5, Turnpike Authority Bonds Amendment (1987)
- Texas Proposition 6, Tax Exemptions for Motor Vehicles Amendment (2007)
- Texas Proposition 12, Bonds for Highway Improvement Projects Amendment (2007)
- Texas Sales and Use Tax Revenue for Transportation Amendment, Proposition 7 (2015)
- Texas Proposition 2, Authorize Counties to Issue Infrastructure Bonds in Blighted Areas Amendment (2021)
- Texas Proposition 8, Bonds for State Construction Projects Amendment (2001)
Utah
- Utah Amendment 2, Require that Fuel and Motor Vehicle Taxes be Used for Mandated Purposes Measure (1962)
Vermont
- Vermont Green Mountain Parkway Act (1936)
- Vermont Statewide Referendum: The Green Mountain Parkway (1936)
Washington
- Washington Initiative 912, Motor Vehicle Tax Repeal Measure (2005)
- Washington Initiative 745, Transportation Funds for Road Infrastructure Measure (2000)
- Washington Initiative 776, License Tab Fees Measure (2002)
- Washington Referendum 49, Vehicle Excise Taxes and Transportation Bonds Measure (1998)
- Washington Referendum 8, Port Districts and Harbor Development Measure (1916)
- Washington HJR 55, Transportation Rates Set By Legislature Amendment (1977)
- Washington HJR 57, Shared Earnings for Common Carriers Amendment (1977)
- Washington Referendum 1, Truck Line Highway Construction Measure (1920)
- Washington Initiative 233, Repeal of Freight Train Crew Law Measure (1966)
- Washington HJR 56, Repeal of Constitutional Provision on Transportation Rate Limits Amendment (1977)
- Washington Referendum 51, Transportation Improvements Measure (2002)
- Washington Initiative 985, Vehicle Traffic-Related Policies Measure (2008)
- Washington Referendum 30, Public Transportation Improvements Bond Measure (1972)
- Washington HJR 4, Vehicle Taxes for Highways Amendment (1944)
- Washington Transportation, Initiative 1125 (2011)
- Washington Referendum 33, License Plate Fee for Conservation Measure (1973)
- Washington Initiative 348, Motor Vehicle Tax Laws Repeal Measure (1977)
- Washington Initiative 242, Implied Consent for Driver Intoxication Tests Measure (1968)
- Washington Initiative 695, Voter Approval for Tax Increases Measure (1999)
- Washington Amendment to Article XV Sec. 1, Harbor Lines Measure (1924)
- Washington Oil Spill Prevention Taxes Advisory Vote No. 10 (2015)
- Washington Initiative 976, Limits on Motor Vehicle Taxes and Fees Measure (2019)
- Washington Advisory Vote 39, Aircraft Fuel Tax Increase Nonbinding Question (2022)
- Washington Advisory Vote 40, Transportation Network Companies Tax Nonbinding Question (2022)
- Washington Limit Vehicle Emission Standards and Greenhouse Gas Disclosures to California Residents Initiative (2026)
West Virginia
- West Virginia Bonds for Roads, Amendment 3 (1996)
- West Virginia Amendment 1, Bonds for Roads and Bridges Measure (October 2017)
Wisconsin
- Wisconsin Question 1, Transportation Fund Revenue Allocation Amendment (2014)
Wyoming
- Wyoming Initiative to Ban Triple Trailers, Initiative 1 (1992)
- Wyoming Railroad Regulation, Initiative 3 (1992)
By year
- Note: The list below automatically compiles all potential and certified ballot measures being tracked by Ballotpedia. Sometimes a measure that has been abandoned by petitioners or in the legislature will still be listed until a legal deadline passes. As more deadlines pass in any given year, the list will more accurately represent which measures will actually go before voters in the current year.
2026
- Oregon Voter Approval for New Tolls Initiative (2026)
- Arizona Prohibit Taxes or Fees on Miles Traveled in Motor Vehicle Amendment (2026)
- North Dakota Remove Restrictions on Vehicle Window Tinting Initiative (2026)
- Arizona Prohibit Photo Enforcement Systems for Speeding or Failure to Obey Traffic Control Devices Measure (2026)
2025
- Washington Limit Vehicle Emission Standards and Greenhouse Gas Disclosures to California Residents Initiative (2026)
2023
- Maine Question 4, "Right to Repair Law" Vehicle Data Access Requirement Initiative (2023)
2022
- Massachusetts Question 1, Tax on Income Above $1 Million for Education and Transportation Amendment (2022)
- Washington Advisory Vote 39, Aircraft Fuel Tax Increase Nonbinding Question (2022)
- Washington Advisory Vote 40, Transportation Network Companies Tax Nonbinding Question (2022)
- Massachusetts Question 4, Remove Proof of Citizenship or Immigration Status for Driver's License Applications Referendum (2022)
2021
- Texas Proposition 2, Authorize Counties to Issue Infrastructure Bonds in Blighted Areas Amendment (2021)
- Maine Question 2, Transportation Infrastructure Bond Issue (2021)
2020
- Maine Question 2, Transportation Infrastructure Bond Issue (July 2020)
- Massachusetts Question 1, "Right to Repair Law" Vehicle Data Access Requirement Initiative (2020)
2019
- Maine Question 1, Transportation Infrastructure Bond Issue (2019)
- Washington Initiative 976, Limits on Motor Vehicle Taxes and Fees Measure (2019)
- Colorado Proposition CC, Retain Revenue for Transportation and Education TABOR Measure (2019)
2018
- Colorado Proposition 109, "Fix Our Damn Roads" Transportation Bond Initiative (2018)
- Maine Question 3, Transportation Bond Issue (2018)
- Missouri Proposition D, Gas Tax Increase, Olympic Prize Tax Exemption, and Traffic Reduction Fund Measure (2018)
- Louisiana Amendment 4, No Dedication of Transportation Trust Fund Revenue to State Police Amendment (2018)
- Colorado Proposition 110, "Let's Go Colorado" Transportation Bond and Sales Tax Increase Initiative (2018)
- California Proposition 69, Transportation Taxes and Fees Lockbox and Appropriations Limit Exemption Amendment (June 2018)
- California Proposition 6, Voter Approval for Future Gas and Vehicle Taxes and 2017 Tax Repeal Initiative (2018)
2017
- West Virginia Amendment 1, Bonds for Roads and Bridges Measure (October 2017)
- Maine Question 3, Transportation Bond Issue (2017)
- Louisiana Amendment 3, Dedicate New Taxes on Fuel to Transportation Construction Fund Measure (October 2017)
2016
- Illinois Transportation Taxes and Fees Lockbox Amendment (2016)
- Alabama Authorization of Toll Districts and Toll District Revenue Bond Debt in Baldwin County, Amendment 12 (2016)
- New Jersey Dedication of All Gas Tax Revenue to Transportation, Public Question 2 (2016)
2015
- Michigan Sales Tax Increase for Transportation Amendment, Proposal 1 (May 2015)
- Texas Population Requirement for Private Road Work Amendment, Proposition 5 (2015)
- Texas Sales and Use Tax Revenue for Transportation Amendment, Proposition 7 (2015)
- Louisiana Transportation Infrastructure Bank, Amendment 2 (2015)
- Maine Transportation Bond, Question 3 (2015)
- Washington Oil Spill Prevention Taxes Advisory Vote No. 10 (2015)
2014
- Texas Transportation Funding Amendment, Proposition 1 (2014)
- Wisconsin Question 1, Transportation Fund Revenue Allocation Amendment (2014)
- Maryland Transportation Fund Amendment, Question 1 (2014)
- Missouri Temporary Sales and Use Tax Increase for Transportation, Amendment 7 (August 2014)
- Louisiana Transportation Infrastructure Bank, Amendment 4 (2014)
- Rhode Island Mass Transit Hub Infrastructure Bonds, Question 6 (2014)
2013
- Maine Transportation Reconstruction and Rehabilitation Bond, Question 3 (2013)
2012
- Alaska Transportation Project Bonds Question, Bonding Proposition A (2012)
- Arkansas Sales Tax Increase Amendment, Issue 1 (2012)
- Rogue River City Street Improvement Bond Measure (November 2012)
- Lake Oswego City Boones Ferry Road Bond Issue (November 2012)
2011
- Washington Transportation, Initiative 1125 (2011)
2010
- Georgia Trauma Care Funding, Amendment 2 (2010)
- Alabama Ten Year Road and Bridge Construction Program, Amendment 3 (2010)
- Rhode Island Capital Bonds for Transportation Question, Question 3 (2010)
- Georgia Transportation Project Contracts, Amendment 3 (2010)
- Maine Job Creating Transportation Projects, Question 3 (June 2010)
- Idaho Airport Debt, HJR 5 (2010)
2009
- Maine Auto Excise Tax Repeal, Question 2 (2009)
- Maine Transportation Improvements, Question 6 (2009)
2008
- Washington Initiative 985, Vehicle Traffic-Related Policies Measure (2008)
- Alaska Transportation Bonds, Proposition A (2008)
- Rhode Island Transportation Bonds, Question 1 (2008)
- California Proposition 91, Dedicated Transportation Funds Initiative (February 2008)
- Colorado Amendment 52, Severance Taxes for Highway Projects Initiative (2008)
- Maine Fish Hatcheries Water, Dams and Transportation Improvements, Question 1 (June 2008)
- California Proposition 1A, High-Speed Rail Bond Measure (2008)
2007
- Maine Transportation Improvements, Question 1 (June 2007)
- Texas Proposition 6, Tax Exemptions for Motor Vehicles Amendment (2007)
- Texas Proposition 12, Bonds for Highway Improvement Projects Amendment (2007)
2006
- California Proposition 1A, Transportation Funding Amendment (2006)
- California Proposition 1B, Transportation Bond Measure (2006)
- South Dakota State Aircraft for State Use, Initiative 5 (2006)
- Minnesota Motor Vehicle Sales Tax, Amendment 1 (2006)
- Rhode Island Question 5, Transportation Bonds Act (2006)
- Georgia Special License Plates, Amendment 3 (2006)
2005
- Washington Initiative 912, Motor Vehicle Tax Repeal Measure (2005)
- New York Transportation Bond Act, Proposal 2 (2005)
- Texas Proposition 1, Rail Relocation and Improvement Fund Amendment (2005)
- Maine Transportation Improvements, Question 2 (2005)
- Arkansas Interstate Highway Bonds, Referred Question 1 (December 2005)
2004
- Florida Amendment 6, Repeal of the High Speed Ground Transportation System Initiative (2004)
- Missouri Amendment 3, Fuel Tax for Highway Maintenance Initiative (2004)
- Rhode Island Question 3, Transportation Bonds (2004)
2003
- Louisiana Highway Projects Act, Ballot Measure 6 (October 2003)
- Maine Transportation Improvements and Air-Medical System, Question 6 (2003)
- Texas Proposition 14, Transportation Projects Funding Amendment (September 2003)
2002
- Washington Initiative 776, License Tab Fees Measure (2002)
- Washington Referendum 51, Transportation Improvements Measure (2002)
- Alaska Transportation, Bonding Proposition B (2002)
- California Proposition 42, Allocation of Gasoline Sales Tax Revenue Amendment (March 2002)
- California Proposition 51, Vehicle Tax Revenue for Transportation Projects Initiative (2002)
- Rhode Island Question 3, Transportation Bonds (2002)
- Rhode Island Question 4, Quonset Point/Davisville Bonds (2002)
2001
- Colorado Amendment 26, Creation of a Fixed Guideway System Initiative (2001)
- Maine Transportation Development and Improvement, Question 3 (2001)
- Texas Proposition 2, Bonds for County Road Projects Amendment (2001)
- Texas Proposition 15, Mobility Fund Amendment (2001)
- Texas Proposition 8, Bonds for State Construction Projects Amendment (2001)
2000
- Florida Amendment 1, Monorail System Initiative (2000)
- Washington Initiative 745, Transportation Funds for Road Infrastructure Measure (2000)
- Rhode Island Transportation Bonds, Question 3 (2000)
- Montana Vehicle Tax Revision, LR-115 (2000)
- Georgia Indemnification for State Highway Employees, Amendment 5 (2000)
1999
- Maine Transportation Facilities and Infrastructure Improvements, Question 3 (1999)
- Colorado Referendum A, Funds for Transportation Projects Bond Measure (1999)
- Washington Initiative 695, Voter Approval for Tax Increases Measure (1999)
1998
- Washington Referendum 49, Vehicle Excise Taxes and Transportation Bonds Measure (1998)
- California Proposition 2, Loans of Transportation-Related Revenues to the General Fund Amendment (1998)
- Montana Repeal Retail Motor Fuel Marketing Act, I-134 (1998)
- Rhode Island Question 1, Transportation Bonds (1998)
- Maine Surface, Air, Water and Rail Transportation Improvements, Question 1 (1998)
- Georgia Roadside Enhancement and Beautification Fund, Amendment 4 (1998)
- Colorado Referendum B, Excess Funds for Transportation and Education Measure (1998)
1997
- Maine Transportation Improvements, Question 4 (1997)
- Maine Turnpike Widening, Question 6 (1997)
- Colorado Amendment 1, Funds for Transportation Improvement Projects Initiative (1997)
1996
- West Virginia Bonds for Roads, Amendment 3 (1996)
1995
- New Jersey Public Question 2, Gas Taxes Earmarked for Transportation Trust Fund (1995)
- Maine Highway, Bridge, Airport and Cargo Port Improvements for Economic Development, Question 2 (1995)
- Maine Safety Belts Required for Four Years and Older, Question 8 (1995)
1994
- South Dakota Use of Seat Belts, Referendum 2 (1994)
- California Proposition 181, Transportation and Rail Project Bond Measure (1994)
- North Dakota Safety Belts, Measure 2 (1994)
- North Dakota Safety Belt Law Repeal, Measure 4 (1994)
- Maine Port and Rail Facilities Improvements, Question 6 (1994)
- Alabama Regional Airport Amendment (1994)
- California Proposition 185, Gas Tax Increase for Transportation Programs and Projects Initiative (1994)
1993
- Maine Highway, Bridge, Airport, Cargo Port and Ferry Service Improvements, Question 3 (1993)
1992
- Wyoming Railroad Regulation, Initiative 3 (1992)
- California Proposition 157, Sunset on the Collection of Tolls Amendment (1992)
- Wyoming Initiative to Ban Triple Trailers, Initiative 1 (1992)
- North Dakota Vehicle Searches, Measure 6 (1992)
- Maine Municipal Improvements to Port Facilities, Question 2 (1992)
- Maine Rail Service Continuation in Piscataquis, Penobscot and Waldo Counties, Question 6 (1992)
- Maine Transportation Facilities Improvements Job Creation and Protection, Question 1 Part B (1992)
- Georgia Transportation Trust Fund, Amendment 5 (1992)
- California Proposition 156, Transportation Improvements Bond Measure (1992)
1991
- Maine Comprehensive Transportation Policy and Turnpike Authority, Question 1 (1991)
- Maine Highway, Bridge, Airport, Ferry Vessel and Harbor Improvements Matching Federal Funds, Question 8 (1991)
1990
- California Proposition 116, Rail Transportation Bond Initiative (June 1990)
- California Proposition 108, Passenger Rail Bond Measure (June 1990)
- California Proposition 111, Gasoline Tax Increase Amendment (June 1990)
- Alaska Railroad Initiative, Measure 1 (August 1990)
- California Proposition 125, Allocation of Gas Tax Revenue to Railroad Equipment Amendment (1990)
- Maine Rail Lines, Trackage Rights and Easements Rights, Question No. 2 (1990)
- Arizona Proposition 105, Automobile Accident Exemption from Right to Recovering Damages Initiative (1990)
1989
- North Dakota Measure 5, Seat Belt Requirement Referendum (December 1989)
- Maine Highway, Bridge, Airport and Harbor Improvements, Question 7 (1989)
- Louisiana Transportation Fund Amendment (October 1989)
1988
- Florida Amendment 4, Transportation Bonds Amendment (1988)
- Florida Amendment 8, Civil Traffic Hearing Officer System Amendment (1988)
- Montana Seatbelt Use, I-110 (1988)
- New York Roads and Bridges Bond Act, Proposal 1 (1988)
- California Proposition 74, Transportation Bond Measure (June 1988)
1987
- Maine School Bus Acquisition, Question 8 (1987)
- Maine Highway, Bridge and Airport Improvements and Groundwater Pollution, Question 9 (1987)
- Texas Proposition 5, Turnpike Authority Bonds Amendment (1987)
1986
- Nebraska Mandatory Seat Belts, Referendum 2 (1986)
- Maine Coastal Access and Harbor, Ferry and Laboratory Improvements, Bond Issue 6 (1986)
- Georgia Voter Approval of Road Construction Authorities, Amendment 6 (1986)
1985
- Maine Highway, Bridge and Airport Improvements, Bond Issue 4 (1985)
- Maine Rail Line Acquisition, Lease and Rehabilitation, Bond Issue 5 (1985)
1983
- Maine Highway and Bridge Improvement, Bond Issue 3 (1983)
- Maine Economic Development, Bond Issue 5 (1983)
- New York Transportation and Infrastructure Bond, Proposal 1 (1983)
1982
- Missouri Proposition A, Large Commercial Vehicles on Highways Referendum (April 1982)
- Minnesota Highway Bond Restrictions, Amendment 2 (1982)
- Minnesota Bonding Authority for Railroad Facilities, Amendment 4 (1982)
- Alaska Reduce Transportation Regulation Initiative (1984)
1981
- Maine Agricultural and Economic Development, Referendum Question No. 1 (1981)
- Maine Highway and Bridge Improvement, Referendum Question No. 2 (1981)
1980
- Texas Proposition 7, County Road Work Amendment (1980)
- Colorado Amendment No. 6, Board of Directors for the Regional Transportation District Initiative (1980)
- Florida Amendment 5, Second Gas Tax Limitation Amendment (1980)
- Arizona Proposition 101, Railroads as Public Service Corporations Amendment (1980)
- Minnesota Highway Bond Restrictions, Amendment 2 (1980)
- Alaska Transportation Projects, Bonding Proposition F (1980)
1979
- Maine Highway and Bridge Improvement, Referendum Question No. 1 (1979)
- Maine Public Fish Piers, Airports and Transportation Improvements, Referendum Question No. 2 (1979)
- Missouri Amendment 2, Transportation Funding and Department Consolidation Measure (1979)
- New York State Debt for Improved Transportation , Proposal 1 (1979)
1978
- Alaska Transportation Bond, Proposition 10 (1978)
- Mississippi Railroad, Amendment 2 (1978)
- Missouri Amendment 5, Gasoline Tax Measure (August 1978)
1977
- Washington HJR 55, Transportation Rates Set By Legislature Amendment (1977)
- Washington HJR 56, Repeal of Constitutional Provision on Transportation Rate Limits Amendment (1977)
- Washington HJR 57, Shared Earnings for Common Carriers Amendment (1977)
- Washington Initiative 348, Motor Vehicle Tax Laws Repeal Measure (1977)
- Maine Airport Improvements, Referendum Question No. 6 (1977)
- Maine Highway and Bridge Improvement Program, Referendum Question No. 7 (1977)
1976
- Alaska Transportation Maintenance Bond, Proposition 13 (1976)
- Alaska Airport Construction Bond, Proposition 14 (1976)
- Arizona Proposition 300, Abolishment of Motor Vehicle Emissions Inspections Measure (1976)
- Minnesota Motor Fuel Taxes and Highway Bonds, Amendment 1 (1976)
- Georgia Federal Funds for Transportation, Amendment 24 (1976)
- Georgia Regulation of Roadsides, Amendment 26 (1976)
1975
- Maine Highway and Bridge Improvement Program, Referendum Question No. 2 (1975)
1974
- Alaska Port Facility Development Bond, Proposition 2 (1974)
- Alaska Trunk and Secondary Airport Bond, Proposition 4 (1974)
- Alaska Transportation Construction Bond, Proposition 5 (1974)
- Florida Amendment 2, Transportation Bonds Amendment (1974)
- Arizona Proposition 105, Distribution of Vehicle Tax Amendment (1974)
- Colorado Amendment No. 7, Aviation Fuel Excise Tax Usage Amendment (1974)
- Maine Weight of Commercial Vehicles and Related Provisions, Referendum Question (1974)
- Maine State Highways Construction, Referendum Question No. 1 (1974)
- Minnesota Railroad Taxes, Amendment 3 (1974)
- New York Rail Preservation Bond Act, Proposition 1 (1974)
- California Proposition 5, Use of Fuel Taxes and License Fees Amendment (June 1974)
1973
- Washington Referendum 33, License Plate Fee for Conservation Measure (1973)
1972
- Washington Referendum 30, Public Transportation Improvements Bond Measure (1972)
- Alaska Highway Construction Bond, Proposition 2 (1972)
- Alaska Airport Construction Bond, Proposition 5 (1972)
- Alaska Flood Control and Small Boat Harbor Bond, Proposition 7 (1972)
- Colorado Referred Law No. 11, No-Fault Insurance System Initiative (1972)
- Florida Amendment 4, Motor Vehicle Licensing Revenue for Education Amendment (1972)
- Arkansas Full Railroad Crew Laws, Initiated Act 1 (1972)
- Arizona Proposition 108, Motor Vehicle Taxes Amendment (1972)
- Idaho Public Funds for Transportation to Schools, HJR 35 (1972)
- Maine Kennebec Bridge, Referendum Question No. 3 (1972)
- Maine State Parks, Airports and Maintenance Building, Referendum Question No. 4 (1972)
- Maine State Highways Construction, Referendum Question No. 1 (1972)
- Maine Airport Moneys Reallocation, Referendum Question No. 3 (1972)
- Georgia State Highway Board, Amendment 4 (1972)
1971
- New York State Debt for Transportation, Proposition 1 (1971)
1970
- Alaska Highway Construction Bond, Proposition 4 (1970)
- Alaska Highway Maintenance Bond, Proposition 8 (1970)
- Alaska Airport Construction Bond, Proposition 9 (1970)
- Alaska Ferry Construction Bond, Proposition 10 (1970)
- Arizona Proposition 104, Vehicle and Gas Tax Revenues Amendment (1970)
- Maine State Highways Construction, Referendum Question (1970)
- Maine State Route 6 Reconstruction, Referendum Question No. 1 (1970)
- Arkansas Full Railroad Crew Laws, Initiated Act 1 (1970)
- California Proposition 18, Use of Fuel Taxes and License Fees Amendment (1970)
1969
- Maine Norridgewock Airport Appropriation, Referendum Question No. 2 (1969)
- Maine Matinicus Island Docking Facilities, Referendum Question No. 6 (1969)
- Maine State Highways Construction, Referendum Question No. 11 (1969)
1968
- Alaska Highway Construction Bond, Proposition 2 (1968)
- Alaska Airport Construction Bond, Proposition 4 (1968)
- Alaska Ferry Construction Bond, Proposition 7 (1968)
- Washington Initiative 242, Implied Consent for Driver Intoxication Tests Measure (1968)
- Maine State Highways Construction, Referendum Question No. 1 (1968)
- Maine Lewiston-Auburn Bridge, Referendum Question No. 4 (1968)
- Nebraska Bonds for Highway Construction, Amendment 14 (1968)
- Louisiana Baton Rouge Airport Amendment (1968)
- Louisiana Airport Bond Issue (1968)
1967
- Maine State Route 6 Reconstruction, Referendum Question No. 1 (1967)
- Maine Lewiston-Auburn Bridge, Referendum Question No. 3 (1967)
- Maine Airport Construction, Extension and Improvement, Referendum Question No. 5 (1967)
- New York Proposition Number One (1967)
- New York State Debt for Mass Transportation, Proposition 1 (1967)
- Pennsylvania Question 8, Repeal Article 17 Concerning Railroads and Canals Amendment (May 1967)
1966
- Washington Initiative 233, Repeal of Freight Train Crew Law Measure (1966)
- Alaska Ferry Construction Bond, Proposition 3 (1966)
- Alaska Highway Construction Bond, Proposition 5 (1966)
- Alaska Airport Construction Bond, Proposition 6 (1966)
- Colorado Amendment No. 2, Taxation of Mobile Homes and Construction Equipment Amendment (1966)
- Maine State Highway Commission Office Building, Referendum Question No. 1 (1966)
- Maine Airport Construction and Improvement, Referendum Question No. 2 (1966)
- Maryland Chesapeake Bay Toll Bridge, Amendment 17 (1966)
- Nebraska Transportation for Private Schools, Amendment 6 (1966)
- Georgia Taxes for Public Transportation, Amendment 14 (1966)
1965
- Florida Amendment 5, Motor Vehicle Definition for Taxation Amendment (1965)
- Maine State Highways Construction, Referendum Question No. 2 (1965)
- New York Land for the Improvement of Piseco Airport, Amendment 9 (1965)
- Florida Amendment 4, Bonds for Roads Amendment (1965)
1964
- Florida Amendment 12, Second Gas Tax Extension Amendment (1964)
- Arkansas Local Road Construction, Proposed Amendment 53 (1964)
- Arizona Proposition 200, Railroad Anti-Featherbedding Initiative (1964)
- North Dakota Repeal Required Crew on Freight Trains, Initiative 3 (1964)
- North Dakota Five-Man Train Crew, Initiative 4 (1964)
- North Dakota Daily Passenger-Freight Train Requirements, Initiative 5 (1964)
- Nebraska Motor Vehicle Taxes, Amendment 5 (1964)
- Georgia State Highway Board, Amendment 1 (1964)
- Georgia Motor Vehicle Taxation, Amendment 8 (1964)
- California Proposition 17, Railroad Labor Initiative (1964)
1963
- Maine State Highways Construction, Referendum Question No. 2 (1963)
- Maine Chebeague Island Bridge and Causeways, Referendum Question No. 5 (1963)
1962
- Alaska Proposition 3, Trunk Airport Bond Measure (1962)
- Arkansas Motor Vehicle Commission, Referred Act 199 (1962)
- Georgia Taxes for Public Transportation, Amendment 9 (1962)
- Utah Amendment 2, Require that Fuel and Motor Vehicle Taxes be Used for Mandated Purposes Measure (1962)
1961
- Maine State Highways Construction, Referendum Question No. 1 (1961)
- New York Purchase of Railroad Commuter Cars, Amendment 3 (1961)
- New York Highway Relocation in Hamilton County, Amendment 7 (1961)
1960
- Alaska Proposition 2, Ferry and Road Bond Measure (1960)
- Kentucky Highways and Parks Bonds Ballot Question (1960)
- North Dakota Aviation Fuel Tax Referendum, Amendment 4 (1960)
- North Dakota Brakeman Requirements, Referendum 2 (1960)
- Alaska Proposition 6, Bush Airfields Bond Measure (1960)
- Georgia Fuel Tax for Highways, Amendment 1 (1960)
- Georgia Brunswick Ports Authority, Amendment 17 (1960)
- California Proposition 14, Use of Funds for Separation of Grade Districts Amendment (1960)
1959
- Maine Passagassawaukeag River Bridge, Referendum Question No. 1 (1959)
- Maine State Highways Construction, Referendum Question No. 2 (1959)
- New York Highway on Forest Preserve Land, Amendment 2 (1959)
1958
- Maine Vehicle License and Registration Fees, Referendum Question (1958)
- Arkansas Repeal of Full Crew Laws, Initiative 1 (1958)
- Georgia Brunswick Port Authority, Amendment 4 (1958)
- Georgia Revenue Certificates for Public Transportation, Amendment 9 (1958)
- California Proposition 10, Taking of Property for Schools and Airports Amendment (1958)
- California Proposition 11, Bonds for Streets and Roads Amendment (1958)
1957
- Maine State Highways Bond Issue, Referendum Question No. 1 (1957)
- Maine Ferry Service Bond Issue, Referendum Question No. 2 (1957)
- New York Forest Land for Highway Purposes, Amendment 7 (1957)
1956
- North Dakota Highway Construction Bond Issue, Referendum 3 (1956)
- Minnesota Highway Funding, Amendment 2 (1956)
- Montana Use of Highway Taxes, Amendment 1 (1956)
- Nebraska Ton Mile Tax, Initiative 1 (1956)
- Nebraska Allocation of Vehicle Fees, Amendment 1 (1956)
- New York Bond for Construction of Highways and Parkways, Proposition 1 (1956)
1955
- Maine Jonesport Reach Bridge Bond Issue, Referendum Question (1955)
- New York State Bonds for State Highways, Amendment 1 (1955)
1954
- California Proposition 5, Freight and Passenger Ship Tax Exemption Amendment (1954)
- California Proposition 8, Vessel Taxation Exemption Amendment (1954)
- Florida Amendment 2, Use of State Funds for Toll Roads Amendment (1954)
- North Dakota Rural Roads Gas Tax, Initiative 3 (1954)
- North Dakota Tax Allocation, Initiative 4 (1954)
- Colorado Statutory Referendum No. 6, Revenue Anticipation Warrants for Highway Maintenance Bond Measure (1954)
- California Proposition 17, Street and Highway Revenues for Parking Facilities Amendment (1954)
1952
- Florida Amendment 1, Funds of Education Capital Projects Amendment (1952)
- North Dakota Legalizing Use of Parking Meters, Referendum 1 (1952)
- Minnesota Motor Vehicle Excise Tax, Amendment 5 (1952)
- Montana Gasoline Tax, I-55 (1952)
- Nebraska Motor Vehicle Tax, Amendment 2 (1952)
- Arkansas State Highway Commission, Amendment 42 (1952)
- Georgia Highway Funds, Amendment 2 (1952)
- Alabama Transportation Taxes, Amendment 1 (1952)
- Arizona Measure Nos. 100-101, Fuel Tax Revenue Dedicated to Roads Amendment (1952)
1951
- Maine Fore River Bridge Toll, Referendum Question No. 4 (1951)
- Maine State Highways Bond Issue, Referendum Question No. 1 (1951)
- Maine Bangor-Brewer Toll Bridge Bond Issue, Referendum Question No. 2 (1951)
- Maine Lewiston-Auburn Toll Bridge Bond Issue, Referendum Question No. 3 (1951)
1950
- Maine Fore River Bridge Bond Issue, Proposed Constitutional Amendment No. 4 (1950)
- Minnesota Petroleum Excise Tax, Amendment 3 (1950)
- Nebraska Gas Tax, Referendum 1 (1950)
- Nebraska Vehicle Registration Fee, Referendum 2 (1950)
- Georgia Savannah Airport Commission, Amendment 9 (1950)
- Georgia DeKalb County Street Improvements, Amendment 18 (1950)
- Georgia Muscogee County Street Improvements, Amendment 33 (1950)
- Georgia Muscogee County Street Improvement Bonds, Amendment 34 (1950)
- Rhode Island Permanent Registration, Proposal 2 (1950)
- Missouri Amendment 1, Gas Tax Increase Referendum (April 1950)
- California Proposition 3, Use of Parking Meter Income for Off-Street Parking Amendment (June 1950)
1948
- California Proposition 3, Number of Brakemen on Trains Initiative (1948)
- North Dakota Prohibiting Parking Meters, Initiative 2 (1948)
- North Dakota Repeal Parking Meter Initiative (1948)
- Florida Amendment 1, Fuel Taxes Amendment (1948)
- Minnesota Petroleum Excise Tax, Amendment 1 (1948)
1946
- Texas Proposition 3, Tax Revenue Allocation Amendment (November 1946)
1945
- Kentucky Highway Fund Taxes Referendum (1945)
- Montana State Highway Treasury Anticipation Debentures Act, R-49 (June 1945)
1944
- Washington HJR 4, Vehicle Taxes for Highways Amendment (1944)
- North Dakota Financing Highway Construction Initiative (1944)
- Maine Highway Fund Use (1944)
- Minnesota Airport Operation, Amendment 1 (1944)
- Nebraska Gas Tax, Amendment 1 (1944)
1942
- Maryland State Roads Commission Property Acquisition, Amendment 3 (1942)
- Iowa Fuel Tax Allocation, Amendment 1 (1942)
1941
- New York Use of Railroad Bonds for Highways and Parkways, Amendment 1 (1941)
1940
- Missouri Amendment 7, Reduce Motor Vehicle License Fees Initiative (1940)
- Missouri Amendment 6, Motor Vehicle License Fees Initiative (1940)
- California Proposition 9, Vessel Tax Exemption Amendment (1940)
- North Dakota Gasoline Motor Fuel Initiative (1940)
- Idaho Revenue from Motor Vehicles, HJR 3 (1940)
- South Dakota Taxes for Highways (1940)
- Arizona Measure Nos. 110-111, Uniform Auto Tax Amendment (1940)
- Arizona Measure Nos. 304-305, Percentage of Gas Tax Revenue Distributed to Cities Initiative (1940)
1939
- Maine Highways and Bridges Bond Issue Increase, Proposed Amendment to the Constitution (1939)
- Georgia Highway Bonds, Amendment 11 (June 1939)
- Georgia Coastal Highway District, Amendment 20 (June 1939)
1938
- California Proposition 4, Highway and Traffic Safety Commission Initiative (1938)
- California Proposition 3, Vehicle and Gas Tax and Fees Amendment (1938)
- Missouri Amendment 6, Fuel Tax and State Highway Commission Initiative (1938)
- Arkansas Highway Bond Refunding, Proposed Amendment 28 (1938)
- Montana State Highway Treasury Anticipation Debentures Act, I-41 (1938)
- New York Railroad Grade Crossings, Amendment 3 (1938)
- New York City Debt for Transit Facilities, Amendment 9 (1938)
- Missouri Proposition 5, Motor Vehicle Fuel Tax Referendum (1938)
1937
- Texas Proposition 2, Road Plan for Harris County Amendment (August 1937)
1936
- Vermont Green Mountain Parkway Act (1936)
- California Proposition 23, Public Service Commission of the State of California Amendment (1936)
- Colorado Tax on Motor Vehicle Ownership, Measure 1 (1936)
- Maine General Highway Fund Use, Question No. 5 (1936)
- Vermont Statewide Referendum: The Green Mountain Parkway (1936)
- California Proposition 10, Vehicle Registration Fee and Taxes Usage Amendment (1936)
- California Proposition 15, Street and High Improvement Repayment Amendment (1936)
1935
- Maine State Aid Highways Bond Issue, Amendment No. 2 (1935)
- Maine Deer Isle-Sedgwick Bridge Bond Issue, Amendment No. 4 (1935)
- Maine Deer Isle-Sedgwick Bridge District, Referendum Question (1935)
1934
- Colorado Taxation on Petroleum and Motor Vehicles for Roads, Measure 5 (1934)
- Colorado Limit on Motor Fuel Tax, Measure 6 (1934)
- Minnesota New Routes for Trunk Highway System, Amendment 2 (1934)
1933
- New York Construction of State Highway in Forest Preserve, Amendment 3 (1933)
- New York Barge Terminal Canal Lands, Amendment 4 (1933)
- California Proposition 9, Use Gas Tax Revenue for Highway Bond Payments Measure (June 1933)
- California Proposition 10, Use Gas Tax Revenue for Highway Bond Payments Measure (June 1933)
1932
- Colorado Limit on Motor Fuel Taxation, Measure 6 (1932)
- California Proposition 4, Highway Taxation Usage Amendment (1932)
- Arkansas Vote for Bridge Bonds Amendment (1932)
- Georgia State Highway Funds, Amendment 8 (1932)
- Arizona Measure Nos. 106-107, Tax Exemptions for Public Corporations Amendment (1932)
- California Proposition 14, Vessel Taxation Exemption Amendment (1932)
1930
- California Proposition 4, Street Railways Tax Amendment (1930)
- California Proposition 6, Toll Bridge Tax Collection Amendment (1930)
- California Proposition 9, San Francisco Harbor Bond Measure (1930)
- California Proposition 18, Motor Vehicle Tax Amendment (1930)
- Florida Motor Vehicle Taxation Amendment (1930)
- Montana State Highway Treasury Anticipation Debenture Act, R-35 (May 1931)
- South Dakota Motor Vehicle Registration (1930)
- Georgia City of Lakeland Railway, Amendment 11 (1930)
- Arizona Measure Nos. 108-109, Bonds for Highway Construction Amendment (1930)
- Arizona Measure Nos. 110-111, Automobile Tax Exemption Amendment (1930)
1929
- Maine Waldo-Hancock Bridge, Amendment No. 2 (1929)
1928
- Maine Excise Tax on Railroads, Referendum Question (1928)
- California Proposition 8, Motor Vehicle Fees Referendum (1928)
- Colorado Bonds for Highway Construction, Measure 4 (1928)
- California Proposition 9, State Right of Way Amendment (1928)
- Missouri Proposition 3, State Highway Bond Initiative (1928)
- Minnesota Motor Fuel Tax Revenue, Amendment 1 (1928)
- Georgia Street Improvement Bonds, Amendment 5 (1928)
- Arizona Measure Nos. 306-307, Repeal of 1925 Automobile Title Law Referendum (1928)
- Arizona Measure Nos. 312-313, Motor Vehicle Department Initiative (1928)
- California Proposition 17, Railroad Grade Separations Bond Measure (1928)
1927
- New York Elimination of Railroad Grade Crossings, Amendment 3 (1927)
- New York Highway Construction on Forest Preserve Land, Amendment 7 (1927)
1926
- California Proposition 2, Highway Usage Taxation Amendment (1926)
- California Proposition 7, Short-Line Steam Railroad Taxation Amendment (1926)
- California Proposition 4, Gasoline Distributor Tax Initiative (1926)
- California Proposition 8, State Highways Initiative (1926)
- Colorado General Assembly to Enact Motor Vehicle Taxes, Measure 3 (1926)
- Colorado Petroleum and Motor Vehicle Taxes, Measure 8 (1926)
- Montana Gasoline Tax for Roads, I-31 (1926)
- Georgia Public Highways, Amendment 4 (1926)
- Georgia Chatham County Road Bonds, Amendment 6 (1926)
- Arizona Measure Nos. 306-307, Motor Vehicle Department Initiative (1926)
- Arizona Measure Nos. 304-305, State Highway Department Finance Initiative (1926)
1925
- Maine Kennebec Bridge Bond Issue, Amendment No. 1 (1925)
- Maine Highways and Bridges Bond Issue, Amendment No. 2 (1925)
- Maine Highways and Bridges Bond Issue Increase, Amendment No. 3 (1929)
1924
- California Proposition 1, Common Carrier Gross Receipts Tax Initiative (1924)
- Washington Amendment to Article XV Sec. 1, Harbor Lines Measure (1924)
- Missouri Proposition 5, Funding the State Highway System Initiative (1924)
- Minnesota Revenue for Trunk Highway Fund, Amendment 1 (1924)
- Arizona Measure Nos. 102-103, Bonds for Highway from the Hassayampa River to Colorado River and Colorado River Bridge Amendment (1924)
- Arizona Measure Nos. 304-305, State Highway Commission Initiative (1924)
1922
- California Proposition 30, Railroad Franchises Initiative (1922)
- Colorado Bonds for Public Highways, Measure 1 (1922)
- Maine Full-Time State Highway Commission (1922)
- Arizona Measure Nos. 100-101, Bonds for Highway from Hassayampa River to Colorado River Amendment (1922)
1921
- Maine State Aid Highways Bond Issue, Amendment No. 2 (1921)
1920
- Washington Referendum 1, Truck Line Highway Construction Measure (1920)
- California Proposition 9, State Highway Bonds Initiative (1920)
- Florida Road System Bonds Amendment (1920)
- Colorado Moffat, Monarch and San Juan Tunnels, Measure 5 (1920)
- Colorado Bonds for Public Highways, Measure 8 (1920)
- North Dakota State Athletic Commission Initiative (1920)
- Missouri Amendment 4, Special Tax for Road Districts Measure (1920)
- Minnesota State Trunk Highway System, Amendment 1 (1920)
- Montana Bond for Highways, R-23 (1920)
- South Dakota Municipal Debt for Street Railways and Lighting (1920)
- Alabama Transportation Tax, Amendment 2 (1920)
- Alabama Road Tax, Amendment 3 (1920)
- Arizona Measure Nos. 310-311, Creation of State Highway Department Initiative (1920)
1919
- Maine Port Facilities Bond Issue, Amendment No. 3 (1919)
- Maine Highways and Bridges Bond Issue Increase, Amendment No. 5 (1919)
- Texas Proposition 6, Bonds for Highway Construction Amendment (1919)
- California Proposition 1, State Highways Bond Amendment (July 1919)
1916
- Washington Referendum 8, Port Districts and Harbor Development Measure (1916)
- California Proposition 3, Highway Completion Bond Measure (1916)
- California Proposition 7, State Highway Bond Repayment Measure (1916)
- Maine Government Aid for Highway Bridges, Question Two (1916)
- South Dakota State Coal Supplying and Roads Funding (1916)
1915
- Texas Proposition 3, Road Tax Amendment (July 1915)
1914
- Colorado State Road Fund Increase for Highway Construction, Measure 7 (1914)
- North Dakota State Aid for Highways Referendum (1914)
- California Proposition 8, Vessel Taxation Amendment (1914)
- Arizona Measure Nos. 302-303, Passenger Transportation on Railroads Regulation Referendum (1914)
- Arizona Measure Nos. 104-105, Highway Bonds Amendment (1914)
1912
- Ohio Bond Limits for Inter-County Roads Amendment (September 1912)
- Colorado Funds for State Highway Commission, Measure 20 (1912)
- Colorado Bonded Indebtedness for State Highways, Measure 31 (1912)
- Colorado Tunnel Through James Peak, Measure 32 (1912)
- Maine Bond Issue for State Highways, Question No. 2 (1912)
- South Dakota Headlights on Locomotives Required, Measure 2 (1912)
- Minnesota State Tax for Roads and Bridges, Amendment 1 (1912)
- Arizona Measure Nos. 306-307, Train Headline Regulations Referendum (1912)
- Arizona Measure Nos. 304-305, Train Employee Regulations Referendum (1912)
- Arizona Measure Nos. 312-313, Passenger Train Rates Referendum (1912)
- Arizona Measure Nos. 310-311, Train Car Limits Referendum (1912)
- Arizona Measure Nos. 308-309, Train Engineer and Conductor Regulations Referendum (1912)
1911
- California Proposition 23, Railroad Rate Increase Procedures Amendment (October 1911)
- California Proposition 19, Free or Reduced Price Railroad Tickets for Government Officials Amendment (October 1911)
- California Proposition 12, Railroad Commission Control and Regulation of Services Amendment (October 1911)
1910
- Maine Portland Bridge Reconstruction, P. & S. L. 1909, c. 404 (1910)
- South Dakota Headlights on Locomotives Required (1910)
- Minnesota Cost of Road and Bridge Projects, Amendment 1 (1910)
- California State Highway Bond Measure (1910)
1908
- Minnesota Unlimited Road and Bridge Tax, Amendment 2 (1908)
- Missouri Amendment 2, Road and Bridge Maintenance Tax Measure (1908)
- Missouri Amendment 7, Public Roads and Highways Tax Measure (1908)
- Missouri Amendment 8, Indebtedness for Subway Construction Measure (1908)
1906
- Idaho Railroad Taxation Exemption, SJR 5 (1906)
- Minnesota Increase Road and Bridge Tax, Amendment 2 (1906)
1905
- Maryland Roads, Amendment 2 (1905)
- New York Highway Improvement, Amendment 5 (1905)
1902
- South Dakota Municipal Debt Limits for Water, Street Railways and Lighting (1902)
Before 1900
- New York Contract Bidding for Canal Projects Amendment (February 1854)
- Minnesota Railroad Loans, Amendment 1 (April 1858)
- Michigan Regulation of Railroad Rates, Proposal 4 (1870)
- Michigan Restricting Railroad Consolidations, Proposal 5 (1870)
- Michigan Railroad Aid Bonds, Proposal 6 (1870)
- Ohio Aid for Railroads, Amendment 3 (August 1874)
- California San Francisco Depot, Proposition 2 (1892)
- Minnesota Road and Bridge Fund, Amendment 4 (1898)
- Arkansas Regulation of Rail Rates, Amendment 2 (1898)
- Arkansas County Road Tax, Amendment 3 (1894)
Did not make ballot
Did not make ballot
- Washington Mandatory Seat Belts Initiative I-1046 (2009)
- Washington Initiative 988 (2008)
- Washington Initiative 996 (2008)
- Arizona Proposition 203 (2008)
- The Safer Road Arizona Act (2008)
- Maryland Speed Camera Referendum (2010)
- Alaska Dedicated Funds Amendment (2010)
- California Proposition 1, Bonds for High-Speed Rail (2008)
- Washington Motor Vehicle Voter Approval, Initiative 1179 (2011)
- Arizona Traffic Camera Question (2012)
- California Elimination of the High-Speed Rail Authority (2012)
- Oregon Studded Tire Ban Initiative (2012)
- Oregon Motor Vehicle Tax Voter Approval Initiative (2012)
- Washington Vehicle License Tab Fees, Initiative 1186 (2012)
- Washington Red-Light Cameras, Initiative 1187 (2012)
- Washington 13.5 Hour Limited Driver's License Initiative (2012)
- Washington Motor Vehicle Fees, Initiative 490 (2012)
- Maryland Transportation Trust Fund Amendment (2012)
- California "Stop the $100 Billion Bullet Train to Nowhere" Initiative (2014)
- California Road Repairs Initiative (2014)
- West Virginia Bonds for Road Repairs Amendment (2014)
- Missouri Transportation Sales Tax Amendment, SJR 16 (2014)
- Missouri Transportation Sales and Use Tax Amendment (2014)
- Arizona No Toll Roads Amendment (2014)
- Washington Vehicle License Fees Cap Measure, Initiative 1323 (2014)
- Washington Red Light Camera Ban, Initiative 1324 (2014)
- Colorado Tax on Nongovernmental Tolls Initiative (2014)
- New Jersey Voter Approval of Indebtedness for Transportation Amendment, ACR 90 (2014)
- New Jersey Fuel Tax Revenue to Transportation Trust Fund Amendment (2014)
- California "Transportation Innovation" Initiative (2014)
- California “Stop High Speed Rail Investment and Reinvest in Education” Initiative (2014)
- Michigan Transportation Funding Amendment (2014)
- Texas Prohibition on Using Motor Vehicle Revenue for Policing Amendment (2015)
- Texas Limitations on Motor Vehicle Revenue Use Amendment (2015)
- Texas Motor Vehicle Revenue for Non-Tolled Roadways Amendment (2015)
- Texas Motor Vehicle Revenue Uses Amendment (2015)
- Washington Limit Vehicle License Fees Measure, Initiative 1360 (2015)
- Washington Bridge and Highway Tolls Measure, Initiative 1361 (2015)
- Washington Automated Traffic Cameras Measure, Initiative 1362 (2015)
- Washington Repeal Motor Vehicle Fuel Taxes Measure, Initiative 1367 (2015)
- New Mexico Motor Vehicle Tax Revenue Appropriations Amendment (2016)
- Washington Vehicle Registration Fee Limit Initiative (ITP) (2016)
- Washington Toll Restrictions Initiative (ITP) (2016)
- Washington Highway Administration Initiative (2016)
- Washington Vehicle Registration Fee Limit Initiative (ITL) (2016)
- Washington Toll Restrictions Initiative (ITL) (2016)
- Florida Voter Approval on Tolls Amendment (2018)
- Arizona No Toll Roads in Arizona Act (2016)
- Washington Motor Vehicle License Fees Initiative (2017)
- Washington Ban on Red-Light Cameras Initiative (2017)
- Washington Voter Approval of Tolls Initiative (2017)
- Washington Tolls for Road Projects Initiative (2017)
- California Repeal Gas Tax and Fees Increase Bill Initiative (2018)
- Washington No Express Toll Lanes on Interstate 405 Initiative (2017)
- Colorado Sales Tax Increase for Transportation Funding Measure (2017)
- Washington Regional Transit Authorities' Taxation Powers Initiative (2018)
- Virginia Transportation Revenue Lockbox Amendment (2018)
- Colorado Roads and Bridges Bonds Initiative (2018)
- Massachusetts Repeal Authority for Public Tolling Initiative (2018)
- Washington Toll Revenue Dedicated to Transportation Lockbox Initiative (2018)
- Washington Lawful Presence to Receive Driver's License Initiative (2017)
- Louisiana No Dedication of Transportation Trust Fund Revenue to State Police Amendment (2017)
- Washington Dedication of Toll Revenue Initiative (2018)
- Washington Prohibit Interstate 405 Toll Lanes Initiative (2018)
- Colorado Sales Tax Increase for Transportation Funds Initiative (2018)
- Missouri Prohibit Toll Roads Initiative (2018)
- Minnesota Dedicate Sales Tax on Vehicle Parts to Road and Bridge Funding Amendment (2018)
- Missouri Ban Cell Phone Usage while Driving Initiative (2018)
- Washington Remove Express Toll Lanes on Interstate 405 Initiative (2019)
- Missouri Diesel Fuel Tax Increase Initiative (2018)
- Missouri Motor Fuel Tax Increase Initiative (2018)
- Washington Prohibit Interstate 405 Toll Lanes Initiative (2020)
- Washington Motor Vehicle License Fees Initiative (2018)
- Oregon Gas Tax Decrease and Carbon Tax Initiative (2020)
- Maine $200 Excise Tax on Motor Vehicles Initiative (2020)
- Oregon Voter Approval for Transportation Tolls and Fees Initiative (2020)
- Arizona Prohibit Red Light and Speeding Cameras Initiative (2020)
- Montana I-188, Vehicular Manslaughter Initiative (2020)
- North Carolina Education and Transportation Bond Measure (2020)
- North Carolina Transportation Infrastructure Bond (2015)
- New York Transportation Infrastructure Bond (2015)
- Massachusetts Elimination of Tolls Initiative (2010)
- Massachusetts Gas Tax Credit Initiative (2024)
- Arizona "Used Car Lemon Law" Initiative (2016)
- Arizona Civil Penalties for Excessive Speeding Initiative (2020)
- Arizona Use of HOV Lanes Initiative (2020)
- California Ban Sale and Registration of Gasoline and Diesel Passenger Vehicles Initiative (2020)
- California Local Governments Responsible for State Highways, Transportation Lockboxes, and Terminate High-Speed Rail Project Initiative (2020)
- Oklahoma State Question 829, Abolish Oklahoma Turnpike Authority and Remove Tolls Initiative (2024)
- Washington Limit Motor Vehicle Taxes and Fees Initiative (2023)
- Missouri Appropriation of Funds for State Highways Amendment (2024)
- Arkansas Lower Age Requirement to Register Historic Vehicles from 45 Years to 25 Years Initiative (2024)
- Oregon Require Voter Approval for Highway Fees or Tolls Amendment (2024)
- Colorado Restrictions on Collecting Fees for Mass Transit Initiative (2024)
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