Every railroad corporation shall cause immediate notice of each accident, in such cases of accident occurring on its road attended with injury to any person as the Public Service Commission may, by rules and regulations adopted by it, require, to be given to a physician most accessible to the place of accident and to the Commission by telegraph, telephone or such other means as may be the quickest under the circumstances at the same time that notice is given officials of the road on which the accident occurred. Any such corporation shall also give notice in like manner of any accident falling within any description of accidents of which the Commission may by general regulation require notice to be given. For each omission to give any such notice any such corporation shall forfeit a sum not exceeding five hundred dollars.