Each railroad company shall maintain a convenient and safe approach for vehicles to each of its passenger stations from the highway and, for a reasonable time before and after the arrival of any passenger train stopping at such station, shall keep such approach free from obstruction. The Commissioner of Transportation may make such orders as he deems necessary and reasonable in each such case to which his attention is called. Any company violating such an order shall forfeit to the state one hundred dollars for each day of such violation.