Utah Code § 41-6a-1204: Trains -- Interference with vehicles limited.

(1) A person or government agency may not operate a train in a manner to prevent vehicular use of a roadway for a period of time in excess of five consecutive minutes except:

(a) when necessary to comply with signals affecting the safety of the movement of trains;

(b) when necessary to avoid striking any object or person on the track;

(c) when the train is disabled;

(d) when the train is in motion or while engaged in switching operations;

(e) when there is no vehicular traffic waiting to use the crossing;

(f) when necessary to comply with a governmental safety regulation; or

(g) as determined by a highway authority.

(2) A violation of this section is an infraction.