From Saturday, July 19, 2025, at 11:00 pm to Sunday, July 20, 2025, at 3:00 am Eastern Time, FMCSA will perform scheduled system maintenance. Users will not be able to access the Clearinghouse during this time.
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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 Status and CDL Downgrades

As of November 18, 2024, having a "prohibited" Clearinghouse status will result in losing or being denied a commercial driver's license (CDL) or commercial learner's permit (CLP). Read more about how a driver's Clearinghouse status affects CDL eligibility.

Drivers in a "prohibited" Clearinghouse status must complete the return-to-duty (RTD) process to become eligible for a CDL or CLP. Learn about the steps a driver takes to get back to being "not prohibited".

Learn more: Read the second Clearinghouse final rule.

Return-to-Duty for CDL Drivers

CDL and CLP holders that have a “prohibited” status in FMCSA’s CDL Drug and Alcohol Clearinghouse will lose their commercial driving privileges until the driver completes the return-to-duty process. This video summarizes the steps these drivers have to take to change their Clearinghouse status back to “not prohibited.”

Return-to-Duty for CDL Drivers

CDL and CLP holders that have a “prohibited” status in FMCSA’s CDL Drug and Alcohol Clearinghouse will lose their commercial driving privileges until the driver completes the return-to-duty process. This video summarizes the steps these drivers have to take to change their Clearinghouse status back to “not prohibited.”

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.