Enter your number of covered drivers or safety-sensitive employees and see how many random drug & alcohol tests you owe this year — with a quarterly breakdown — using current DOT agency minimum rates.
Use the average number of safety-sensitive positions over the year — for FMCSA, your CDL drivers.
Rates change — agencies publish the current-year minimums each year. Confirm your rate before finalizing your plan.
FMCSA · 10 covered drivers
| Quarter | Drug | Alcohol |
|---|
Numbers are rounded up to whole tests. Random selections must be spread reasonably through the year and drawn by a scientifically valid method — a consortium/C-TPA handles the draws so even a one- or two-driver operation meets the rate.
A random pool is only part of a DOT program. Here's the training and paperwork that goes with it.
The 2-hour supervisor training §382.603 requires before anyone can order a reasonable-suspicion test.
Build the written DOT drug & alcohol policy every regulated employer must have.
The full checklist for a small trucking company or owner-operator to be audit-ready.
Ready-to-use DOT forms — refusal to test, MFR, reasonable-suspicion documentation, and more.
What to keep and for how long so your random-testing records survive an audit.
Query and reporting requirements for CDL drivers, with the latest violation stats.
Each DOT agency sets an annual minimum random rate as a percentage of the average number of covered positions. FMCSA (trucking) is currently 50% for controlled substances and 10% for alcohol — so 50 drivers means 25 random drug tests and 5 random alcohol tests for the year. Confirm the current-year rate for your agency.
Use the average number of covered (safety-sensitive) positions during the year. For FMCSA that's your CDL drivers. Office staff and non-safety-sensitive roles don't count toward the random pool.
Yes — agencies review and publish minimum random rates each year and can raise or lower them (for example, FMCSA's drug rate has moved between 25% and 50% over the years). Always verify the current rate before finalizing your plan.
You join a consortium/third-party administrator (C-TPA). Your drivers go into a larger random pool and the C-TPA runs the selection draws, so even a one-driver operation meets the rate. Owner-operators are required to be in a consortium.