Understanding the regulations behind your program
A plain-language look at the DOT rules that shape random testing, recordkeeping, and reporting.
Why Regulatory Clarity Matters:
DOT drug & alcohol testing regulations are detailed and, in places, easy to misread, especially around random selection rate minimums, recordkeeping timelines, and reporting obligations. Misunderstanding a requirement doesn't have to be intentional to create real exposure.
Key Regulatory Areas:
- 49 CFR Part 40: the foundational procedures governing testing, specimen collection, and MRO review
- Random testing rate minimums: annual minimum rates depend on the governing agency and covered employee category; use the current agency requirements
- Recordkeeping requirements: retention periods and access requirements depend on the record type and applicable program rules
- Reporting obligations: agency-specific reporting and audit documentation, including Clearinghouse duties for FMCSA-covered employers
Start with the rules for your operation
Part 40 sets common drug and alcohol testing procedures. Agency rules determine which workers are covered and the requirements for their programs. FMCSA, FAA, FTA, FRA, PHMSA, and USCG programs can differ in testing requirements, rates, and reporting.
Check 49 CFR Part 40, the agency rules for your operation, and current DOT random testing rates. For FMCSA-covered drivers, see our Clearinghouse guide.
This page is informational and not legal advice, for guidance specific to your program, see Policy Guidance.
How Unity Keeps You Aligned:
Rather than leaving your team to interpret regulatory updates on their own, Unity monitors changes continuously and translates them into practical guidance for your specific program.