DOT Drug and Alcohol Consortium: What New Carriers Must Join

If your drivers hold CDLs, federal law requires your company to run a DOT drug and alcohol testing program. For most new carriers, and for every owner-operator, that means joining a consortium. Here is what the rule actually requires, what a consortium does for you, and how enrollment works.

Who has to be in a testing program

49 CFR Part 382 applies to every employer whose drivers operate vehicles that require a CDL. That includes a one-truck owner-operator. If you employ only yourself as a driver, you carry both hats: you must follow the rules that apply to employers and the rules that apply to drivers.

There is no small-company exception. A carrier with one CDL driver has the same testing obligations as a carrier with one hundred.

Why a consortium, specifically

The testing program has one piece a small carrier cannot do alone: random testing. FMCSA requires random, unannounced tests, selected by a scientifically valid method and spread through the calendar year. For 2026, carriers must randomly test 50 percent of their average number of driver positions for drugs and 10 percent for alcohol each year.

An employer who employs only himself or herself as a driver is required to run that random program with two or more covered employees in the random testing pool. One person cannot be a random pool. Joining a consortium puts your drivers in a pool with drivers from many other companies, which is how a small carrier meets the rule. Larger small fleets join for the same reason: the consortium runs the selections, the notifications, and the paperwork.

The audit stakes

Having no testing program at all is an automatic failure of the new entrant safety audit (49 CFR 385.321). It is the first failure point on our new entrant safety audit checklist, and it is one of the easiest to prevent, because enrollment takes days, not weeks. The auditor will ask for proof that your program exists, so keep your enrollment agreement where you can produce it.

What a consortium does

A consortium, also called a Consortium/Third-Party Administrator or C/TPA, runs the mechanics of your testing program:

• Maintains the random testing pool and makes the random selections at FMCSA's rates
• Notifies you when a driver is selected, so the test stays unannounced to the driver until notification
• Coordinates collection sites for drug and alcohol tests
• Receives and reports test results, and can report violations to the FMCSA Clearinghouse when you designate it to do so
• Keeps the testing records organized for audits

What it does not do is take the responsibility off you. FMCSA holds the employer responsible for its own testing program, including the work its consortium performs for it. If a selected driver is never tested, that is your violation, not the consortium's.

How enrollment works

• Choose a consortium that services DOT-regulated motor carriers
• Enroll your company and every CDL driver, including yourself if you drive
• Register your company in the FMCSA Clearinghouse and designate your consortium there
• Complete a pre-employment drug test and a Clearinghouse full query for every driver before their first trip
• File your enrollment agreement with your other audit records

After enrollment, the ongoing work is small: keep your driver list current with the consortium, send drivers for testing promptly when they are selected, and run your Clearinghouse queries at least once a year per driver.