Maryland Transportation Section 21-702

      (a)      The State Highway Administration and any local authority with the approval of the State Highway Administration may place a stop sign at any railroad grade crossing of a highway that the local authority or State Highway Administration designates as a particularly dangerous crossing.

      (b)      If the driver of a vehicle approaches the stop sign, the driver:

            (1)      Shall stop within 50 feet but not less than 15 feet from the nearest rail in the crossing; and

            (2)      May proceed only on exercising due care.