Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.670

Sec. 670. (1) A person shall not operate or move a caterpillar tractor, shovel, derrick, roller, boiler, machinery, or other structure or object upon rollers, or other equipment or structure, which, because of its limited power, or weight, character, or load, has a normal operating speed of 4 miles per hour or less, or which has a vertical load or body clearance of less than 9 inches above the level surface of the roadway, upon or across the tracks of a railroad at grade level without first complying with this section, except this section shall not apply to the movement of electrically propelled cars on fixed rails or to their loads.

(2) Notice of the intended crossing described in subsection (1) shall be given to the nearest agent or officer of the railroad in time to afford protection to its locomotives, trains, or cars at the crossing.

(3) Before making the crossing, the person operating or moving the vehicle or equipment shall first stop not less than 15 feet or more than 50 feet from the nearest rail of the track and while stopped shall listen and look in both directions along the track for an approaching railroad train or other on-track equipment and for signals indicating the approach of a railroad train or other on-track equipment, and shall not proceed until the crossing can be made safely.

(4) A crossing shall not be made when warning is given by automatic signal or crossing gates or a flagman or otherwise of the immediate approach of a railroad train or car.

(5) A person who violates this section is responsible for a civil infraction.