Arkansas Code
Subchapter 7 - Railroad Grade Crossings
§ 27-51-705. Moving heavy equipment at crossings

(a) No person shall operate or move any crawler-type tractor, steam shovel, derrick, roller, or any equipment or structure having a normal operating speed of up to ten miles per hour (10 m.p.h.) or a vertical body or load clearance of less than one-half inch (½") per foot of the distance between any two (2) adjacent axles or, in any event, of less than nine inches (9"), measured above the level surface of a roadway, upon or across any tracks at a railroad grade crossing without first complying with this section.
(b) Notice of any intended crossing shall be given to a station agent of the railroad, and a reasonable time shall be given to the railroad to provide proper protection at the crossing.
(c) Before making any crossing, the person operating or moving any such vehicle or equipment shall first stop it not less than fifteen feet (15') nor more than fifty feet (50') from the nearest rail of the railroad. While stopped that person shall listen and look in both directions along the tracks for any approaching train and for signals indicating the approach of a train and shall not proceed until the crossing can be made safely.
(d)
(1) No crossing shall be made when warning is given by automatic signal or crossing gates or a flagger or otherwise of the immediate approach of a railroad train or car.
(2) If a flagger is provided by the railroad, movement over the crossing shall be under his or her direction.

Structure Arkansas Code