A track circuit interrupter may be fitted at
catch points, trap points or
buffer stops to maintain a
track circuit
A track circuit is an electrical device used to prove the absence of a train on a block of rail tracks to control railway signals. An alternative to track circuits are axle counters.
Principles and operation
The basic principle behind the t ...
in the 'occupied' state in the event of a derailment. The track circuit remains de-energised until the interrupter is replaced.
GK/RT0011 specifies the requirements for the provision of track circuit interrupters.
GK/RT0064: Provision of Overlaps, Flank Protection and Trapping
References
Train detection systems
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