It is unlawful for any person in charge of any railroad train or switch train or any railroad locomotive or engine, or the engineer or conductor thereof, to obstruct or to remain in or upon any public place or railroad crossing or the right-of-way thereof so as to obstruct or interfere with pedestrian or vehicular traffic over the same for a longer period than five consecutive minutes at any one time, or to cause any railroad car or cars or railroad locomotive or engine to be moved back and forth at any such public place or railroad crossing or the right-of-way thereof so as to obstruct or interfere with pedestrian or vehicular traffic over the same for a longer period than five consecutive minutes at any one time. (Ord. 29 §34, 1967).