FMCSA Drug and Alcohol Clearinghouse: What Carriers Must Do (and What Happens If They Don't)

The FMCSA Drug and Alcohol Clearinghouse is a federal database that tracks drug and alcohol violations for CDL drivers. Carriers must query it before hiring and annually for every currently employed CDL driver. Violations must be reported to it. And when a driver completes a return-to-duty process, that completion must be reported too. Missing any of these steps is a Part 382 violation regardless of whether any driver ever tested positive.

What the Regulation Actually Requires

Clearinghouse requirements are found at 49 CFR Part 382 Subpart G, established by the Clearinghouse Final Rule (82 FR 2217). The Clearinghouse became mandatory on January 6, 2020. The database tracks:

• Verified positive drug test results reported by MROs
• Confirmed positive alcohol tests (0.04 or above) reported by BATs
• Refusals to test reported by MROs and BATs
• Actual knowledge violations — employer-reported violations based on direct observation, police reports, or admission
• Return-to-duty (RTD) completion and follow-up testing status reported by employers and C/TPAs

Every carrier must register at clearinghouse.fmcsa.dot.gov before conducting queries or reporting. C/TPAs can be designated to conduct queries and submit reports on a carrier's behalf, but the carrier remains responsible for compliance.

Step-by-Step Practical Breakdown

Step 1: Register on the Clearinghouse

Go to clearinghouse.fmcsa.dot.gov and register using your USDOT number and a Login.gov account. Drivers must register separately using their CDL information and a Login.gov account. Both carrier and driver registrations are required before any query or consent transaction can occur.

Step 2: Pre-Employment Full Query

Before a CDL driver performs any safety-sensitive function for the first time, you must conduct a full query. A full query requires driver consent — the driver must log into the Clearinghouse and electronically authorize the query before results are released to you.

The full query replaced the prior employer inquiry that was previously required under 49 CFR § 391.23 for drug and alcohol violations. For drivers hired after January 6, 2020, the Clearinghouse full query satisfies that prior employer check for the drug and alcohol component.

A driver cannot begin safety-sensitive duties until you have received the query results and confirmed no unresolved violations exist in the Clearinghouse.

Step 3: Annual Limited Query for Current Drivers

Every 12 months, you must conduct at least a limited query for every CDL driver currently employed in a safety-sensitive capacity. A limited query does not require driver consent at the time of the query — instead, you must obtain the driver's annual written consent (electronic or paper) authorizing you to run limited queries during their employment.

If a limited query returns a "record found" result, you must immediately conduct a full query (with driver consent) before the driver can continue safety-sensitive functions. A "no record found" result requires no further action.

Step 4: Report Violations to the Clearinghouse

You must report violations within 3 business days. Reporting triggers include:

• Actual knowledge violations: When you have direct knowledge of a driver being under the influence, or when a driver reports a violation to you
• Refusals to test: When a driver refuses a required test in a situation where the refusal is not reported by an MRO or BAT (e.g., failure to appear for a random test)
• Return-to-duty and follow-up status: When an RTD test is completed or when follow-up testing is completed per the SAP plan

MROs and BATs automatically report positive tests and confirmed refusals directly to the Clearinghouse. You do not need to separately report test results that were reported by the MRO or BAT.

Step 5: Report Return-to-Duty Completion

When a driver with a Clearinghouse violation completes the return-to-duty process — SAP evaluation, treatment completion, and a negative RTD test — the employer or C/TPA must report the RTD test completion to the Clearinghouse. This removes the driver's "prohibited" status and allows future employers to see the RTD completion when querying.

What Auditors Actually Look For

Carrier registration: Auditors verify your carrier account exists on the Clearinghouse and was active before your first CDL driver performed safety-sensitive functions.

Pre-employment query records: Every DQF should contain a record of the Clearinghouse pre-employment query result. Auditors check dates — the query must precede the driver's first day of safety-sensitive duty.

Annual query calendar: Auditors verify that annual limited queries were conducted within 12 months for every current CDL driver. A gap of more than 12 months between queries for any driver is a violation.

Driver consent documentation: Annual limited query authorization must be on file. The authorization form (or electronic equivalent) must be signed by the driver.

Violation reporting records: If any violations occurred, auditors verify they were reported to the Clearinghouse within 3 business days and that the driver was removed from safety-sensitive duties immediately upon knowledge of the violation.