running board
noun1
A narrow board serving as a step beneath the doors of some cars.
- One of the "locomotors", a 72 h.p. machine for light yard shunting which can be driven by a shunter from the running board. [A long step on the side just above rail level]1962 March, “Dutch diesel and electric locomotives”, in Modern Railways, page 173, photo caption:
2
Rail transport, Railways, Transport A narrow footway above the driving wheels of some steam locomotives, and along the sides of some diesel locomotives.