FMCSA Clearinghouse
A federal online database that stores records of drug and alcohol violations for CDL drivers, required for employers to query before hiring and annually for all current CDL drivers.
Why this glossary page exists
This page is built to do more than define a term in one line. It explains what FMCSA Clearinghouse means, why buyers keep seeing it while researching software, where it affects category and vendor evaluation, and which related topics are worth opening next.
Evaluating software in this category?
Compare eld compliance platforms with verified pricing, deployment details, and editorial verdicts.
Compare ELD Compliance software →What the Clearinghouse Records and Who Can Access It
The FMCSA Drug & Alcohol Clearinghouse launched on January 6, 2020, under 49 CFR Part 382, Subpart G. It is a secure, real-time online database maintained by FMCSA that contains records of violations of the DOT drug and alcohol testing program for CDL drivers. Violations recorded include: positive drug or alcohol test results (BAC 0.04 or greater), refusals to test (including adulterations and substitutions), actual knowledge violations (a driver operating while under the influence), and failed return-to-duty tests after a prior violation. Employers, Medical Review Officers (MROs), Substance Abuse Professionals (SAPs), consortia and third-party administrators (C/TPAs), and law enforcement can access the Clearinghouse, each with different query and reporting obligations.
Employer Query Requirements: Pre-Hire and Annual
The Return-to-Duty Process
A CDL driver with a Clearinghouse violation cannot simply wait out the violation — they must complete a mandatory return-to-duty (RTD) process before performing safety-sensitive functions again. The process requires: evaluation by a DOT-qualified Substance Abuse Professional (SAP), completion of any treatment or education program the SAP prescribes, a negative return-to-duty drug or alcohol test, and a follow-up testing plan administered by the SAP (minimum 6 unannounced tests in the first 12 months following return to duty, with testing continuing for up to 5 years). Until the RTD process is complete and recorded in the Clearinghouse, the driver's record shows as a 'prohibited' status and no employer can legally place them in a safety-sensitive position.
Operational Scenario: The Pre-Hire Query Miss
What happens when a carrier skips the pre-hire query
A small carrier in the Pacific Northwest hired a CDL driver without running a Clearinghouse query, relying instead on a verbal reference from a prior employer and a clean MVR. The driver had a positive cocaine test at a previous carrier 14 months earlier and had never initiated the return-to-duty process. The Clearinghouse showed him as 'prohibited.' Six weeks into employment, the carrier was selected for a compliance review. The investigator pulled driver qualification files and ran Clearinghouse queries on all current drivers. The prohibited driver was flagged immediately. FMCSA cited the carrier for employing a driver in a prohibited status and for failing to conduct the required pre-employment Clearinghouse query. The carrier received civil penalties of $9,000 and a Conditional safety rating. The driver was placed out of service on the spot.
- Register your company in the Clearinghouse at clearinghouse.fmcsa.dot.gov before hiring your first CDL driver — the system requires employer registration before queries can be run
- Obtain electronic consent from every CDL driver at hire — without consent, you cannot run a full pre-employment query
- Run full Clearinghouse queries on every CDL driver before their first safety-sensitive function, with no exceptions for drivers with long tenure at prior employers
- Document annual limited query results in each driver's qualification file, including the date of the query and whether it returned a hit requiring a full query
- If a driver's Clearinghouse record shows 'prohibited,' remove them from safety-sensitive functions immediately and do not reinstate until you receive written confirmation from the SAP that the RTD process is complete
- When using a C/TPA to manage your drug and alcohol testing program, confirm they have Clearinghouse reporting access and are submitting violation records — you remain the responsible employer if they fail to report