This publication was produced by the U.S. Department of Transportation (DOT) to assist safety-sensitive employees subject to workplace drug & alcohol testing in understanding the requirements of 49 CFR Part 40 and certain DOT agency regulations. It answers many important questions, such as, "Who is subject to DOT testing?" "What drugs does DOT test for?" and "When will I be tested?" among many others.

This handbook is available in PDF format, or you can contact salesteam@drugtestingusa.com to request a free copy.