On Thursday, July 16, 2026, from 8 p.m. to 9 p.m. Eastern Time, Clearinghouse users will not be able verify driver CDL information due to system maintenance on the Commercial Driver Licensing Information System (CDLIS) Gateway.
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United States Department of Transportation
FMCSA - Federal Motor Carrier Safety Adminstration

Drug & Alcohol Clearinghouse

Contact Us

What do you need help with?

Login.gov Registration

For assistance creating your Login.gov account, or using your Login.gov credentials to access the Clearinghouse:

Contact: https://login.gov/contact/

If you are able to log in to Login.gov, but are having trouble with your Clearinghouse registration, see “Clearinghouse Help” below.

FMCSA Portal Users

For assistance linking your Portal account with your Clearinghouse account:

Contact: (800) 832-5660

Enforcement users and SDLAs, contact your organization coordinator.

General Information

Need help? Browse the Clearinghouse frequently asked questions. Download resources in the Learning Center. If you still have questions, contact FMCSA using the form below.

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Clearinghouse Help

Contact the FMCSA Clearinghouse Team

Enter your question about using the Clearinghouse, including registration or managing your account, or provide feedback on how we can enhance your user experience.

(800) 832-5660