['Drug and Alcohol Testing - DOT']
['Return-to-duty drug and alcohol testing - Motor Carrier']
03/07/2025
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Procedures for testing and actions to return a driver to duty are contained in Part 40, which applies to all modes (i.e., highway, rail, pipeline, maritime, air, transit) under DOT authority.
Section 382.105 requires employers to ensure that all alcohol or controlled substances testing conducted under Part 382 complies with the Part 40 procedures.