If you are a CDL-licensed driver, you should know that the DOT drug test detects five main groups of substances that can immediately take you off the road.

Complying with DOT regulations not only prevents penalties — it is the key to ensuring the continuity, reputation, and financial stability of your business. If you want to pass a DOT audit without complications, make sure to follow these 6 essential steps.

If you’re a CDL driver, the DOT drug test checks 5 drug groups that can instantly end your driving career.