§ 61-a. Sounding of certain signals on railroad cars by unauthorized persons. A person who shall ring or sound a signal bell or device for starting or stopping a passenger car, of a street or other surface railroad, or subway or elevated railroad, while such car is in use for the transportation of passengers, unless such person be the conductor of the car or a person employed to operate the car, or unless the bell or device so rung or sounded be one expressly provided for direct use by passengers in stopping the car, is guilty of a misdemeanor and punishable by a fine of not exceeding twenty-five dollars.