protecting signalling

См. также в других словарях:

• Australian railway signalling — Just as the railways of Australia has suffered issues from incompatible rail gauges, the different states have tended to go their own way regarding railway signalling practice.New South WalesThe signalling system in New South Wales consists… …   Wikipedia

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• Axle counter — An axle counter is a device on a railway that detects the passing of a train in lieu of the more common track circuit. A counting head (or detection point ) is installed at each end of the section, and as each axle passes a head at the start of… …   Wikipedia

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