Random testing is one of the most important and most frequently audited parts of an FMCSA drug and alcohol program. Each year, FMCSA sets the minimum percentage of driver positions that must be randomly tested. For 2026, those rates did not change.
The 2026 FMCSA minimum random rates
For calendar year 2026, the minimum annual random testing rates for FMCSA-regulated employers are:
- Drug testing: 50% of the average number of driver positions
- Alcohol testing: 10% of the average number of driver positions
These rates are listed on the ODAPC random testing rates page, which also shows the rates for the other DOT agencies. ODAPC notes that because FMCSA's rates did not change, FMCSA did not need to publish a new Federal Register notice for 2026.
Why the drug rate is 50%
Under 49 CFR 382.305, FMCSA can adjust the minimum random drug testing rate based on the industry's reported random positive rate. FMCSA raised the rate from 25% to 50% beginning in 2020 after survey data showed a random positive rate of 1.0% (Federal Register, December 27, 2019). Under the rule, the rate can return to 25% only after the positive rate stays below 1.0% for two consecutive years of data.
How to calculate your number of random tests
The rate applies to the average number of driver positions, not just the number of drivers on the payroll today. A simple way to think about it:
- Estimate the average number of safety-sensitive driver positions during the year.
- Multiply by 50% to get the minimum number of random drug tests.
- Multiply by 10% to get the minimum number of random alcohol tests.
For example, a carrier that averages 10 driver positions during 2026 needs at least 5 random drug tests and 1 random alcohol test for the year. Some drivers may be selected more than once and some not at all. That is expected in a truly random process.
If your company is part of a consortium, the rate applies to the consortium's pool as a whole, and the consortium administrator is responsible for selecting enough drivers from the pool.
Rules for a valid random program
- Every driver in the pool must have an equal chance of being selected each time selections are made.
- Selections must be made using a scientifically valid method, such as a computer-based random number generator.
- Tests must be unannounced and spread reasonably throughout the calendar year.
- Once notified, the driver must proceed to the test site immediately.
- Random alcohol tests can only be performed just before, during or just after the driver performs safety-sensitive functions.
A common audit problem is doing all random tests in December to catch up. Selections and tests should happen throughout the year, typically quarterly or more often.
Owner-operators and small fleets
A one-driver company that is not leased onto another carrier must still be in a random testing program. FMCSA guidance indicates this is done by joining a consortium random pool. Read DOT Consortium & Random Pool Requirements for Owner-Operators for details.
Records to keep
Keep documentation of each selection list, the date and time drivers were notified, the tests completed, and any tests not completed with the reason. These records support your annual calendar-year summary and help during an audit. See DOT Drug Testing Records: What Should an Employer Keep for an Audit?
Frequently Asked Questions
What are the 2026 FMCSA random testing rates?
50% for drug testing and 10% for alcohol testing, based on the average number of driver positions.
Do the rates apply to each driver?
No. The rates apply to the pool. At a 50% rate, the number of random drug tests must equal at least half of the average number of driver positions for the year, but individual drivers may be selected more than once, once or not at all.
Do other DOT agencies use the same rates?
Not necessarily. Each DOT agency sets its own minimum rates. Check the ODAPC random testing rates page for FAA, FRA, FTA, PHMSA and USCG rates.
Can a small carrier run its own random pool?
A carrier can run its own pool if it meets all the random testing requirements, but many small carriers and all single-driver owner-operators use a consortium so selections are made from a larger pool and managed by a C/TPA.
Join a DOT random consortium
Test Pro LLC manages DOT random consortium enrollment and random drug testing for Washington motor carriers and owner-operators, with collections at our Kent office. Contact Test Pro LLC to enroll or book a test.