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DOT Drug & Alcohol Program and the Clearinghouse

Having no drug and alcohol program is the fastest way to fail your safety audit. A one-truck company still needs one — including the owner-driver.

What a compliant program contains

  • A written policy given to every driver with a signed receipt.
  • Enrollment in a consortium/third-party administrator (C/TPA) if you have fewer than a handful of drivers — this gives you a random pool to draw from.
  • A Designated Employer Representative (DER) named in writing.
  • A certified Medical Review Officer (MRO) reviewing results.
  • Two hours of supervisor training: 60 minutes on drugs, 60 on alcohol, for anyone who supervises drivers.
  • FMCSA Clearinghouse registration with the company and each driver.

The six test types

TestWhen
Pre-employmentVerified negative before any safety-sensitive function
Random50% of average driver count for drugs, 10% for alcohol, annually
Post-accidentFatality, or citation plus injury requiring treatment away from scene, or citation plus tow-away
Reasonable suspicionTrained supervisor observes specific, articulable signs
Return-to-dutyAfter SAP completion, directly observed
Follow-upMinimum 6 unannounced tests in 12 months, SAP-directed

Clearinghouse duties

Run a full query before hiring any CDL driver, and a limited query annually for each driver you employ. Report refusals, positives and actual knowledge within three business days. Since the 2024 rule, a 'prohibited' status in the Clearinghouse also downgrades the driver's state CDL privileges.

Owner-operators must be enrolled in a consortium — you cannot randomly select yourself.

Questions people ask

How much does a consortium cost?
Typically $150–$300 per driver per year for enrollment, plus $60–$100 per test performed.
Do I need supervisor training if I am the only employee?
If nobody supervises anyone, there is no supervisor to train — but auditors expect the training as soon as you hire a second driver. Most owners take it anyway.