Glossary · Driver Life & Work
Drug & Alcohol Clearinghouse (Clearinghouse).
FMCSA-operated database tracking commercial driver drug and alcohol violations; mandatory query for hiring and annual checks since 2020.
What it is
The FMCSA Drug & Alcohol Clearinghouse is a federal database that tracks drug and alcohol violations by commercial drivers. It became mandatory in January 2020 for all FMCSA-regulated employers and is now the single source of truth for driver substance-use history across employers — a violation at one carrier follows the driver everywhere.
Employers must query the Clearinghouse before hiring any CDL driver, annually for current employees, and after any drug test result. Drivers must register and consent to specific employer queries — without consent, the employer can't pull a full record. Positive results, refusals to test, and follow-up requirements all log in the database. A failed drug test results in "prohibited" status, and the driver cannot legally operate commercial vehicles until the return-to-duty (RTD) process completes: evaluation by a Substance Abuse Professional (SAP), any recommended treatment, RTD test, and a follow-up testing schedule that can run multiple years.
Why it matters for trucking finance
A Clearinghouse "prohibited" status immediately stops the driver's revenue. For owner-operators, this is catastrophic — no loads, no income, equipment payments still due. The RTD process can take 6+ months including SAP evaluation, treatment, and follow-up tests. Insurance carriers heavily price on Clearinghouse history — even one prohibited status can disqualify the operator from major insurance markets. Lenders rarely query the Clearinghouse directly but treat positive results in carrier records as elevated default risk.
Related terms
- CDL Class A (CDL-A) — Commercial Driver's License Class A — required for combination vehicles over 26,001 lbs GCWR with a towed unit over 10,000 lbs; the standard CDL for OTR trucking.
- DOT Physical — Medical examination required for commercial drivers by FMCSA, conducted by certified examiners; validity ranges from 3 months to 24 months based on health.
- CSA Score (CSA) — FMCSA Compliance, Safety, Accountability program scoring system that rates carrier safety performance using roadside inspection and crash data.
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