Category:Track circuits: Difference between revisions
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[[Image:Track Circuits Impedance bond Kidu staion.jpg|thumb|right| A 2008 photo of a Kidu station impedance bond used in a border of track circuit sections to conduct the return currents of electric vehicles - Photo by Tam0031 ]] | |||
An electrical device used to detect the presence or absence of a train on the train tracks | |||
[[Category:Circuitry|{{PAGENAME}}]] |