Visitor Comments about this Photo:When a train is in the circuit and shunting, a push button on a post on either side is interlocked with the traffic signals. After one of the crew pushes the button, in a few seconds they all turn red and a flashing light then alerts the train crew that all vehicle traffic has a red light. Posted by George Kenson on 2016-06-15 01:50:04 Thanks ! Posted by Jay Gadon on 2018-12-10 18:41:33 You must be logged on to post comments. |