Track Circuit Clips
A simple piece of safety equipment that can be carried by trains is a track-circuit clip. This is simply a length of wire connecting two metal spring clips that will clip onto a rail. In case of accident or obstruction a clip applied to a track will indicate that that track is occupied, therefore putting signals to danger. As an example of use, if a train is derailed on a double track, and is foul of the second track, application of a clip to the second track will immediately return signals protecting the second track to danger. This procedure is a much more effective safety measure than attempting to contact a signalling centre by telephone because its effect is immediate and automatic.
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Famous quotes containing the words track and/or circuit:
“To most men, experience is like the stern lights of a ship, which illumine only the track it has passed.”
—Samuel Taylor Coleridge (1772–1834)
“We are all hostages, and we are all terrorists. This circuit has replaced that other one of masters and slaves, the dominating and the dominated, the exploiters and the exploited.... It is worse than the one it replaces, but at least it liberates us from liberal nostalgia and the ruses of history.”
—Jean Baudrillard (b. 1929)