(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.