No person or government agency shall operate any train in such a manner as to prevent vehicular use of any 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 in motion except while engaged in switching operations;
D. When the train is disabled;
E. When there is no vehicular traffic waiting to use the crossing; or
F. When necessary to comply with a governmental safety regulation. (Ord. 934-03 § 1 (part))