Mississippi Code Title 63. Motor Vehicles and Traffic Regulations § 63-3-1013

No person shall operate or move any caterpillar tractor, steam shovel, derrick, roller, or any equipment or structure having a normal operating speed of six (6) or less miles per hour or a vertical body or load clearance of less than nine (9) inches above the level surface of a roadway upon or across any tracks at a railroad grade crossing without notice of any such intended crossing first being given to a superintendent of such railroad and a reasonable time being given to such railroad to provide proper protection at such crossing.

Before making any such crossing the person operating or moving any such vehicle or equipment shall first stop the same not less than fifteen (15) feet nor more than fifty (50) feet from the nearest rail of such railway and while so stopped shall listen and look in both directions along such track for any approaching train or other on-track equipment, including, but not limited to, hi-rail vehicles and on-track maintenance equipment and for signals indicating the approach of a train or other on-track equipment, including, but not limited to, hi-rail vehicles and on-track maintenance equipment, and shall not proceed until the crossing can be made safely.

No such crossing shall 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 or other on-track equipment, including, but not limited to, hi-rail vehicles and on-track maintenance equipment.