QUEBEC commercial driver’s licenses (CDLs) may not be verified in the Clearinghouse at this time due to system maintenance in Quebec. If this prevents an employer from conducting required pre-employment queries for information on QUEBEC CDL- and CLP-holders only, the employer may hire a driver using solely the procedures set forth in 49 CFR 391.23(e), as outlined in the frequently asked questions.
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United States Department of Transportation
FMCSA - Federal Motor Carrier Safety Adminstration

Drug & Alcohol Clearinghouse

Welcome to the Drug and Alcohol Clearinghouse

An online database that gives employers and government agencies real-time access to information about CDL driver drug and alcohol program violations.

Before You Register

Do you need help with registration?

Identify your Clearinghouse user role and find out what you will need to complete your registration.

Read More

Welcome to the Drug and Alcohol Clearinghouse

An online database that gives employers and government agencies real-time access to information about CDL driver drug and alcohol program violations.

  • Record
  • Consent
  • Query
  • Safety

Learn More

Clearinghouse-II Final Rule: CDL Downgrades

As required in the Clearinghouse-II final rule, beginning November 18, 2024, State Driver Licensing Agencies (SDLAs) must query the Clearinghouse before issuing, renewing, upgrading, or transferring CDLs and CLPs, and must review a driver’s information when notified by the Clearinghouse of a status change. SDLAs will be required to remove the CDL or CLP privilege from the driver's license of an individual subject to the CMV driving prohibition, which would result in a downgrade of the license until the driver complies with the return-to-duty (RTD) requirements. Read the second Clearinghouse final rule

How will you use the Drug and Alcohol Clearinghouse?

Watch this brief video to learn more about how different users will record or access information in the Clearinghouse.

How will you use the Drug and Alcohol Clearinghouse?

By fulfilling the requirements listed in the Clearinghouse final rule, you are helping keep our Nation’s roadways safer for all drivers. Watch this brief video to learn more about how different users will record or access information in the Clearinghouse.

Learn More

FMCSA has developed several Clearinghouse factsheets, brochures, and instructional guides, customized by user type. Visit the Learning Center to access these resources.

Need more information about the Clearinghouse?

Read answers to frequently asked questions. If you need additional information, you can contact us.