It shall be unlawful for any railroad company, conductor, engineer or other person to stop any engine, car or train of cars, or permit the same to be done, upon any railroad track at the crossing of any street or alley intersecting such railroad in the city so as to obstruct the passageway across such railroad for a longer period than five minutes at any one time.
('71 Code, § 9-9-1) Penalty, see § 97.999