A highway route controlled quantity of certain radioactive materials (Class 7).Being involved in, through action or omission, a hazardous materials reportable incident, as described under 49 CFR 171.15 or 171.16, involving any of the following:.Operating a vehicle placed out of service for violations of the Federal Motor Carrier Safety Regulations or compatible state laws and regulations without taking necessary corrective action.An invalid CDL includes one that is falsified, revoked, expired or missing a required endorsement. Using a driver not possessing a valid commercial driver’s license (CDL) to operate a commercial motor vehicle (CMV) as defined under § 383.5.If you commit any of the following actions, identified through roadside inspections or by any other means, you may be subjected to an expedited safety audit, a compliance review or may be required to submit a written response demonstrating corrective action: If you refuse to permit a safety audit, the FMCSA will provide you with written notice that your registration will be revoked and your operations placed out of service unless you agree in writing, within 10 days from the service date of the notice, to permit the safety audit to be performed. Controlled substances and alcohol use and testing requirements.The areas of review include, but are not limited to, the following:

The safety audit will consist of a review of the carrier’s safety management system. New entrants looking to conduct interstate operations within the United States need to pass a safety audit before being legally registered with the U.S.

Dot safety rating review letter