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Tag Archives: signaling


Track Circuit

Most railroads use track circuits to determine which sections of track are occupied by trains. These devices are actually fairly simple in design, and have been in use since 1872. … Continue reading

Balise

Balise is an electronic beacon or transponder placed between the rails of a railway as part of an automatic train protection (ATP) system. Transmission device (passive transponder) that can send telegrams (or tele-powering) … Continue reading

Axle Counter

An axle counter is a device on a railway that detects the passing of a train between two points on a track. A counting head (or detection point) is installed … Continue reading

Communications-Based Train Control (CBTC)

Communications-Based Train Control (CBTC) is a railway signaling system that makes use of the telecommunications between the train and track equipment for the traffic management and infrastructure control. By means of the CBTC systems, the exact position … Continue reading