Warning:

You are accessing a U.S. Government information system. This information system, including all related equipment, networks, and network devices, is provided for U.S. Government-authorized use only. Unauthorized or improper use of this system is prohibited, and may result in civil and criminal penalties, or administrative disciplinary action. The communications and data stored or transiting this system may be, for any lawful Government purpose, monitored, recorded, and subject to audit or investigation. By using this system, you understand and consent to such terms.

An official website of the United States government Here's how you know
The .gov means it’s official.

Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

This site is secure.

The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

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

New Identity Checks for Clearinghouse Users

To protect the integrity and security of Federal systems, including user’s personal information, FMCSA is aggressively addressing fraudulent activity. The latest Agency action is integrating identity verification into the Drug and Alcohol Clearinghouse registration process.

Starting April 27, 2026, users who register for certain Clearinghouse accounts will need to prove their identity using a secure web application. This update applies to new registrations for the following user roles:

  • Employer Without a Portal Account
  • Consortium/Third-Party Administrator (C/TPA)
  • Medical Review Officer (MRO)
  • Substance Abuse Professional (SAP)
  • Assistants invited to register under another registered entity

Learn more about this update in Clearinghouse News.

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.