Section 77-B - Speedometers on certain locomotives(a) No railroad locomotive may be operated in excess of thirty miles per hour within the state without a speedometer functioning correctly within four miles per hour.(b) A railroad shall be deemed to be in compliance with the above provisions if within one year after the first day of October next succeeding the date on which this statute shall have become a law, it shall have at least one-third of its locomotives equipped with a speedometer as hereinabove provided; and if within the following year an additional one-third of said locomotives shall be so equipped and the remainder of said locomotives so operated by a railroad shall be in compliance with the provisions of this statute within one year thereafter.(c) Locomotives operated or used exclusively in switching or transfer service and multiple unit cars shall be exempted from the above provisions.(d) Each such railroad shall notify the department of transportation of the state of New York the date that each such locomotive shall be in compliance with the provisions of this statute, stating the serial number or other identification of each such locomotive.(e) Each railroad affected or covered by the provisions of this statute shall maintain at a designated location in this state a list or schedule of the locomotives hereinabove referred to, setting forth, among other information, the date that the speedometer hereinbefore referred to shall have been calibrated and functioning in accordance with the provisions of this statute.(f) The commissioner of transportation of the state of New York shall enforce the provisions of this statute and may issue such order or orders as may be proper to require compliance with the provisions of this statute.