Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.722a

Sec. 722a. (1) A truck pulling a trailer, a truck tractor pulling a semitrailer and trailer combination, or a truck tractor pulling 2 semitrailers shall not transport a flammable liquid, in bulk, which has a flash point at or below 70 degrees Fahrenheit within this state.

(2) A truck pulling a trailer, a truck tractor pulling a semitrailer and trailer combination, or a truck tractor pulling 2 semitrailers shall not transport a flammable gas or a compressed flammable gas, in bulk, as defined by 49 C.F.R. parts 100 to 180, within this state.

(3) A truck or a truck tractor pulling a semitrailer shall not transport a flammable liquid, in bulk, which has a flash point at or below 70 degrees Fahrenheit in this state, unless the truck or the semitrailer has a water capacity of less than 13,800 gallons.This subsection does not apply to those vehicles registered with the motor carrier division of the department of state police on or before January 1, 1986.

(4) A truck or truck tractor pulling a semitrailer shall not transport a flammable liquid, in bulk, which has a flash point at or below 70 degrees Fahrenheit in a quantity of more than 13,400 gallons.

(5) The owner or driver of a vehicle that transports, or a shipper who loads a vehicle with a flammable liquid, flammable gas, or compressed flammable gas in violation of this section is guilty of a misdemeanor, punishable by a fine of not more than $3,000.00, or imprisonment for not more than 90 days, or both.

(6) This section shall be enforced only by a police officer.

(7) For the purposes of this section, “in bulk” means an amount of product or material of 3,500 water gallons or more in a single containment system. Commercial motor vehicles transporting hazardous materials shall comply with the motor carrier safety act, Act No. 181 of the Public Acts of 1963, being sections 480.11 to 480.21 of the Michigan Compiled Laws.