Resources and Guides

Struggling to navigate the SAP? Want to start working ASAP? Check out our SAP-approved guides and informational resources.

By Mindy Guillory • October 9, 2026
Refusing a pre-employment CDL drug test can be a DOT violation. Learn what counts as a refusal, what happens next, and how the return-to-duty process works.
A row of semi trucks are driving down a road.
July 10, 2025
Learn how to find and designate a qualified DOT Substance Abuse Professional (SAP) for the FMCSA Clearinghouse and navigate the Return-to-Duty process step by step.