1. Railway signallingRailway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being guided by fixed rails, trains are uniquely susceptible to collision; furthermore, trains cannot stop quickly, and frequently operate at speeds that do not enable them to stop within sighting distance of the driver.
Read “Railway signalling” on English Wikipedia
Read “信号保安” on Japanese Wikipedia
Read “Railway signalling” on DBpedia
Read “Railway signalling” on English Wikipedia
Read “信号保安” on Japanese Wikipedia
Read “Railway signalling” on DBpedia
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