1837 1 13/2 Flags of different colours hoisted to various heights, and worked by the railway police, to notify any..stoppages or accidents.
1905 B. L. Putnam Weale I. iv. 117 A case of unjustifiable assault by the railway police, which had taken place at the instigation of the European conductor.
2004 S. Mehta 73 The railway police..demolished nine different hutments put up by Sunil.