Drug & Alcohol Resources (Free)
Official sources for DOT/FMCSA drug and alcohol testing. Read the rules directly from the agencies — we don't provide a policy or interpret the rules.
FMCSA Drug & Alcohol Testing Program →
FMCSA's main page for drivers, employers, and service agents.
FMCSA Overview of Drug and Alcohol Rules →
FMCSA's plain-language overview of who is tested and when.
FMCSA Drug & Alcohol Clearinghouse →
Register, run queries, and report violations.
49 CFR Part 382 (eCFR) →
FMCSA controlled substances and alcohol use and testing regulations.
49 CFR Part 40 (eCFR) →
DOT-wide testing procedures.
DOT Office of Drug & Alcohol Policy & Compliance (ODAPC) → *
DOT's Part 40 guidance and resources.
* Site blocked our automated check; please confirm it opens.
See also our Post-Accident Drug & Alcohol Testing Checklist (sample; confirm with 49 CFR 382.303).
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