These links will open new windows to websites outside CMR
US DOT
US DOT Regulations, guidance, and information
DOT drug testing regulations 49 CFR Part 40
Overview of substance abuse testing for commercial drivers and other regulated safety-sensitive employees
FMCSA
Federal Motor Carrier Safety Administration (FMCSA) regulations, guidance, information
FMCSA drug testing regulations 49 CFR Part 382
Federal Motor Carrier Safety Administration (FMCSA) Employer Resources
FTA
Federal Transit Administration, US Department of Transportation
FTA drug testing regulations 49 CFR Part 655
