The FMCSA is establishing the Commercial Driver’s License (CDL) Drug and Alcohol Clearinghouse. This new database will contain information pertaining to violations of the U.S. DOT controlled substances (drug) and alcohol testing program for holders of CDLs.

Effective January 6, 2020, all motor carriers employing drivers requiring a CDL must report drug and alcohol violations to the Drug & Alcohol Clearinghouse. Driver pre-employment queries to the Clearinghouse must also be conducted prior to CDL driver employment.
The Clearinghouse is a secure on-line database which will provide access to real-time information, ensuring drivers committing drug and alcohol violations complete the necessary steps before getting back behind the wheel or performing a safety sensitive function.
Motor Carrier Responsibilities:


  • Create an account with the Clearinghouse if one or more drivers is subject to the FMCSA drug and alcohol testing requirements
  • Conduct pre-employment queries to verify prospective drivers do not have prior drug or alcohol violations
  • Verify the return to duty process if prior violations are discovered
  • Conduct queries of the Clearinghouse at least once a year on current drivers
  • Report any drug and alcohol violations discovered on your CDL required drivers
  • Continue to conduct a 3 year previous employer inquiry for drug and alcohol violations until January 6, 2023.


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