
DOT Resources
Transportation Safety and Compliance Resources
- Department of Transportation (DOT) Official Website: The official DOT website serves as a primary source for DOT regulations, guidance documents, announcements, and updates across all modes of transportation, including links to specific DOT agencies like FMCSA, FAA, FRA, and others.
- Federal Motor Carrier Safety Administration (FMCSA): FMCSA’s website offers detailed information on regulations governing commercial motor carriers, including Hours of Service (HOS) rules, driver qualifications, drug and alcohol testing requirements, and the FMCSA Drug and Alcohol Clearinghouse.
- Federal Aviation Administration (FAA): The FAA website provides regulations, guidance, and resources for aviation safety, including pilot qualifications, aircraft maintenance standards, air carrier operations, and drug and alcohol testing programs for aviation employees.
- Federal Railroad Administration (FRA): FRA’s website offers regulations and guidance for railroad safety, including train operations, track maintenance, signal systems, and drug and alcohol testing requirements for railroad employees in safety-sensitive positions.
- Federal Transit Administration (FTA): FTA’s website provides regulations and resources for public transit agencies, including bus and rail operations, vehicle safety standards, transit safety programs, and drug and alcohol testing requirements for transit operators.
- Pipeline and Hazardous Materials Safety Administration (PHMSA): PHMSA’s website offers regulations and guidance for the safe transportation of hazardous materials by pipeline and other means, including requirements for pipeline operators, hazardous materials shipping, and drug and alcohol testing programs.
- United States Coast Guard (USCG): The USCG website provides regulations and resources for maritime safety and security, including vessel operations, licensing requirements, port safety, and drug and alcohol testing programs for maritime personnel.
- Substance Abuse and Mental Health Services Administration (SAMHSA): SAMHSA’s website offers guidance on drug and alcohol testing procedures, including specimen collection guidelines, laboratory testing protocols, and cutoff levels for various substances.

