540 CMR 14.00 establishes minimum standards for motor carrier safety and hazardous materials transportation. Motor carriers, drivers, shippers and any other persons subject to 540 CMR 14.00 must comply with the laws and regulations of the Commonwealth, and in the event of a conflict between 540 CMR 14.00 and any other regulation or law of the Commonwealth, the stricter, more stringent standard shall apply.
540 CMR, § 14.07