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Visit your state's Department of Transportation website for the most up to date information.
Alabama
Alaska
Arizona
Arkansas
California
- Department of Transportation
- PATH: Partners for Advanced Transit and Highways
- Division of Traffic Operations
- Mass Transportation Program
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
- New York State Department of Transportation
- New York Metropolitan Transportation Council
- Port Authority of New York and New Jersey
- Thruway Authority, New York State
North Carolina
- Department of Transportation
- Division of Highways
- ITRE: UNC Institute for Transportation
Research and Education
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
- Department of Transportation
- Virginia Tech Transportation
Infrastructure & Systems Engineering Division
Washington
West Virginia
Wisconsin
Wyoming
