Can truck drivers use CBD? All you need to know about cannabis, hemp, testing & the clearinghouse

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FMCSA Clearinghouse: Updated User Brochures Now Available

Updated User Brochures Now Available

FMCSA has posted updated materials to help CDL drivers and their employers register for and get started using the Drug and Alcohol Clearinghouse.

Why should employers register?

• Register for the Clearinghouse.
• Conduct queries on all potential new hires, and at least annually on all current employees who perform safety-sensitive functions, such as operate a commercial motor vehicle.
• Report driver violations (positive alcohol tests, test refusals not reported by a medical review officer [MRO], and actual knowledge of violations).

Why should drivers register?

Drivers must be registered in the Clearinghouse, with a verified CDL number, to respond to employer consent requests. They can also view their own Clearinghouse record at any time.

How should self-employed CDL drivers register?

CDL drivers who operate under their own authority (often called “owner-operators,” typically a single-driver operation) must register as an employer and designate a consortium/third-party administrator (C/TPA) in the Clearinghouse. Owner-operators can also add their CDL information to add a driver role, which allows them to respond to query consent requests from their C/TPA.


Download the revised user brochures to learn more:

Driver Brochure
Employer Brochure
Owner-Operator Brochure

For more information, including step-by-step instructions on how to register and more, visit the Clearinghouse Learning Center.


Questions? Browse frequently asked questions or contact the Clearinghouse Team.

AADT – Important Information on New Testing Procedures

AADT Moving Lab Testing to Alere Tox Labs/eScreen
Adopting a Paperless Environment Requires Some Client Support

Due to continued industry consolidation, FMCSA’s push to move to paperless chain-of-custody forms and the effects of the COVID-19 pandemic, AADT has decide to partner with industry leaders Alere Toxicology (lab work), eScreen (collection site mgt.) and eScreen/Cynergy P.A. (MRO services).

When scheduling a pre-employment or random drug test, AADT clients will need to utilize a new convenient test scheduling portal on the AADT Online website. Here are the easy to follow instructions to schedule a drug test..

For clients who have not yet set-up an AADT Online account, we will be helping you to facilitate this. We are providing all unenrolled clients with a (temporary) User Name and Password that you can change at any time. This information will be sent via direct email, text and a mailing. If you have any questions, please feel free to call at (909) 982-8409, text us at (909) 533-9833, or email us at

Thank you for your support.
AADT Staff