Transportation and Highway Related Web Sites
- Advocates for Highway and Auto Safety
- American Association of State Highway and Transportation Officials (AASHTO)
- American Automobile Association (AAA)
- American Automobile Association Foundation for Traffic Safety
- American Consulting Engineers Council (ACEC)
- American Public Works Association
- American Road and Transportation Builders Association
- American Society for Testing and Materials (ASTM)
- American Society of Civil Engineers
- Asphalt Institute
- Associated General Contractors of America
- Association of Metropolitan Planning Organizations
- Conference Of Minority Transportation Officials (COMTO)
- CRASH (Citizens for Responsible and Safe Highways)
- Environmental Protection Agency Transportation Partners
- Federal Motor Carrier Safety Administration
- Hawaii Transportation Association (HTA)
- Institute of Transportation Engineers
- Insurance Institute for Highway Safety
- Intermodal Association of North America (IANA)
- International Grooving & Grinding Association (IGGA)
- International Municipal Signal Association
- International Right-of-Way Association
- ITS Home Page
- ITS America
- Local Technical Assistance Program Clearinghouse
- Mothers Against Drunk Driving (MADD)
- National Asphalt Pavement Association
- National Association of County Engineers (NACE)
- National Association of Regional Councils
- National Committee on Uniform Traffic Laws and Ordinances
- National Defense Transportation Association
- National Partnership for Highway Quality
- National Safety Council
- National Sleep Foundation
- National Society of Professional Engineers (NSPE)
- National Transportation Library
- Network of Employers for Traffic Safety (NETS)
- Oak Ridge National Laboratory Center for Transportation Analysis
- Road Information Program
- Texas Transportation Institute
- Transportation Research Board
- University of Michigan Transportation Research Institute (UMTRI)
- Upper Great Plains Transportation Institute
- U.S. Department of Transportation
- Western Research Institute