Beacon for identifying the passage of an object at a given...
Bi-directional coded track circuits without insulated joints
Bi-directionally dynamically braked gate crossing mechanism...
Bidirectional system for transmitting informations between a...
Bolt-like railway vehicle wheel detector
Braking condition indication apparatus for rapid transit trains
Broken rail and/or broken rail joint bar detection
Broken rail detecting track circuits
Broken rail position detection