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Track circuit

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Illustration of track circuit invented by William Robinson in 1872

Track circuit transformer on the right, new axle counter on the left (Slovenia).

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.

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Circuit de via Catalan Kolejový obvod Czech Gleisfreimeldeanlage#Gleisstromkreis German Circuito de vía Spanish Circuit de voie French Circuíto de vía GL Circuito di binario Italian 軌道回路 Japanese 궤도 회로 Korean Spoorstroomloop Dutch

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