Maryland Transportation Section 21-701

      (a)      (1)      If the driver of a vehicle approaches a railroad grade crossing under any of the circumstances stated in paragraph (2) of this subsection, the driver:

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

                  (ii)      May not proceed until he can do so safely.

            (2)      The requirements of this subsection apply if:

                  (i)      A clearly visible electric or mechanical signal device warns of the immediate approach or passage of a railroad train;

                  (ii)      A crossing gate is lowered;

                  (iii)      A flagman signals the approach or passage of a railroad train;

                  (iv)      A railroad train approaching within 1,500 feet of the crossing gives a signal audible to traffic approaching the crossing and the railroad train, because of its speed or nearness to the crossing, is an immediate danger; or

                  (v)      A railroad train is plainly visible and is in or is approaching dangerously near to the crossing.

      (b)      A person may not drive any vehicle through, around, or under any crossing gate or barrier at a railroad grade crossing while the gate or barrier is closed or is being opened or closed.