One of the mysteries of the English language finally explained.
An electric circuit made in a section of railway track as an aid to signalling, and able to be short-circuited by the presence of a train.
- ‘When there are track problems, it could be a number of things - such as a track circuit, a broken rail or whatever.’
- ‘There had been a track circuit failure at Erith and the driver announced there would be a coach replacement service.’
- ‘In our opinion they could not reasonably have foreseen that these track circuits could have caused problems of this nature at a distance of 60 to 70 metres.’
- ‘Once the westbound train has progressed and the caboose is no longer occupying the detector track circuit of interlocking all intermediate signals will return to their normal status.’
- ‘It was a broken track circuit today - something like that - I'm not so good on my railway terminology.’
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