- EPA – State and Local Transportation Law & Regulationswww.epa.gov
- Federal Motor Carrier Safety Administration – Regulationswww.fmcsa.dot.gov
- National Highway Traffic Safety Administration – Laws & Regulationswww.nhtsa.gov
- Regulations.gov – Submit & View Federal Regulationswww.regulations.gov
- Title 49 – Transportation (Code of Federal Regulations)www.ecfr.gov
- U.S. Department of Transportation – Regulatory Informationwww.transportation.gov
