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Ask Us A Question

"Have a Question … Ask DOT!"


DOT Agency Regulations

If you have questions regarding:

  • Safety-Sensitive Positions
  • Pre-employment Tests
  • Post-Accident Tests
  • Random Tests
  • Reasonable Suspicion Tests
  • Return to Duty Tests
  • Follow-up Tests
  • Employee Prohibitions and Rule Violations
  • Employer Policy Development
  • Supervisor Training
  • Employee Training and Educational Materials
  • Recordkeeping, MIS and Other Reporting Requirements

Find the appropriate drug and alcohol program office to send your DOT Agency questions.


49 CFR Part 40

If you have questions regarding:

  • Requirements of Obtaining New Employee Testing Records
  • Urine Specimen Collections
  • Drug Testing Laboratories
  • Medical Review Officers
  • Alcohol Testing
  • Substance Abuse Professionals
  • Return to Duty Process
  • Service Agent Responsibilities and Qualifications
  • Recordkeeping and Confidentiality Requirements

Send the Office of Drug and Alcohol Policy and Compliance your Part 40 questions.

NOTE: Response time to e-mails will vary depending on the volume of e-mails and the complexity of the request.

A red and white checkered hot-air balloon is rising up toward the right, above a complex maze below. A slogan to the right of the balloon says, “Preventing Substance Abuse Begins with Knowledge.”

Last updated: Monday, March 15, 2021