U.S. and Canadian Transportation Administration Sites
- Federal Highway Administration
- National Highway Traffic Safety Administration
- Transport Canada
- U.S. DOT Intelligent Transportation Systems Joint Program Office
National Organizations and Associations
- American Association of State Highway and Transportation Officials (AASHTO)
- American Society for Testing and Materials (ASTM)
- Federal Communications Commission
- Institute of Electrical and Electronics Engineers (IEEE)
- Institute of Transportation Engineers (ITE)
- National ITS Architecture
- National Transportation Communications for ITS Protocol (NTCIP)
- Society of Automotive Engineers
- Transportation Research Board