RSA 265:51 Moving Heavy Equipment at Railroad Grade Crossing.

I. No person shall drive or move any crawler-type tractor, steam shovel, derrick, roller, or any equipment or structure having a normal driving speed of 10 or less miles per hour or a vertical body or load clearance of less than 1/2 inch per foot of the distance between any 2 adjacent axles or in any event of less than 9 inches, measured above the level surface of a roadway, upon or across any tracks at a railroad grade crossing without first complying with this section.
II. Notice of any such intended crossing shall be given to a station agent of such railroad and a reasonable time be given to such railroad to provide proper protection at such crossing.
III. Before making any such crossing the person driving or moving any such vehicle or equipment shall first stop the s