(A) It shall be unlawful for a railroad company to permit any of its trains to obstruct any vehicular traffic on public streets or highways for a longer period than 5 minutes at any 1 time.
(B) It shall be unlawful for a railroad company to permit successive train movements to obstruct any vehicular traffic on any public street or highway until all vehicular traffic previously delayed by train movements has been cleared or a period of 5 minutes has elapsed between train movements.
(C) Each offense under this section shall be a separate violation; provided, that blockings caused by accident or mechanical failure shall not be offenses hereunder.