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United States Department of Transportation United States Department of Transportation

Policy and Guidance

Department of Transportation Guidance

The U.S. Department of Transportation (DOT) Office of Drug & Alcohol Policy & Compliance (ODAPC) maintains a website with valuable information related to drug and alcohol testing. The website includes the DOT published rule (49 CFR part 40), which mandates who must conduct drug and alcohol tests, how to conduct those tests, and what procedures to use when testing. ODAPC also publishes and provides authoritative interpretations of the rule and various program guidance publications.


Policy and legal interpretations of the FAA industry drug and alcohol testing program.

FAA Guidance

FAA guidance related to the industry drug and alcohol testing program.

Q&As for Safety-Sensitive Employees

Information and answers to your questions about FAA drug and alcohol testing.

Last updated: Friday, May 12, 2023