Indiana Code Title 9. Motor Vehicles § 9-21-8-40

Sec. 40. (a) A person may not operate or move a caterpillar tractor, steam shovel, derrick, roller, or any equipment or structure weighing more than ten (10) tons and having a normal operating speed of not more than six (6) 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 tracks at a railroad grade crossing without first complying with this section.

(b) Notice of an intended crossing under this section shall be given to a superintendent of the railroad, and a reasonable time shall be given to the railroad to provide proper protection at the crossing.

(c) Before making a crossing under this section, the person operating or moving a vehicle or equipment described in subsection (a) shall first stop the vehicle or equipment not less than ten (10) feet and not more than fifty (50) feet from the nearest rail or the railway.  While stopped, the person shall listen and look in both directions along the track for an approaching train or other on-track equipment and for signals indicating the approach of a train or other on-track equipment.  The person shall not proceed until the crossing can be made safely.

(d) A crossing may not be made when warning is given by automatic signal, crossing gates, a flagman, or otherwise of the immediate approach of a railroad train or other on-track equipment.