A driver with a DOT drug or alcohol violation is prohibited from operating any commercial motor vehicle (CMV) in
interstate commerce until they complete the Return-to-Duty process. However, if the driver operates a vehicle under
26,001 lbs. intrastate, and the employer determines the violation does not apply, they may be permitted to drive.
Employers must ensure compliance with FMCSA regulations and consult legal counsel to assess specific
circumstances.
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