Utah Code § 56-1-15: Fire caused by railroad operations.

(1) As used in this section:

(a) "Railroad operation" means an operation conducted:

(i) by a railroad:

(A) owner;

(B) operator;

(C) contractor; or

(D) lessee; and

(ii) on a rail line.

(b) "Railroad operation" includes an operation of a train, a construction operation, or a maintenance operation.

(2) In an action for damages that result from a fire caused by a railroad operation, proof that the fire occurred and was caused by a railroad operation is prima facie evidence of negligence on the part of the person who conducted the railroad operation.