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Parts 383 and 391 of the Federal Motor Carrier Safety Regulations list the offenses for which a driver must be disqualified from driving.
Only the state or Federal Motor Carrier Safety Administration has the authority to take an official “disqualification” action against a driver. Disqualification means the suspension, revocation, or cancellation of a CDL, the withdrawal of a person’s driving privileges to operate a commercial motor vehicle, or a determination by the FMCSA that a person is not qualified to operate a commercial motor vehicle under Part 391.
No employer may knowingly allow, require, permit, or authorize a drive to operate a CMV if the driver has lost his/her privilege to operate a CMV, or has been disqualified from operating a CMV.