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

New Clearinghouse resources available

NEW RESOURCES

FMCSA has updated the Clearinghouse Learning Center with additional resources to help you use the Clearinghouse.

Resources for Employers, Including Owner-Operators

How to Designate Your C/TPA

Query History: Employers

How to Report RTD Information (Employers)

Resources for Consortium/Third-Party Administrators (C/TPAs)

Query History: C/TPAs

How to Report RTD Information (C/TPAs)

Resources for CDL Drivers

Submitting a Petition for Data Review

As a reminder, drivers are permitted to challenge only the accuracy of information in the Clearinghouse. This does not include challenging the accuracy of test results or refusals.

Visit the Learning Center →

Read the Clearinghouse Frequently Asked Questions

Have a question about the Clearinghouse? Search through the online FAQs or browse through topic categories to find the information you need. You can filter by user type to drill down your search, or read all FAQs.

Read the Clearinghouse FAQs →

Email sent: 4/22/2020