More info on Track Circuit: en.wikipedia.org/wiki/Track_c...
More info on Relays: www.electronics-tutorials.ws/...
Sources: www.sundayobserver.lk/2019/01/...
More information on Sri Lanka Signalling system: jayan.tripod.com/go/railway/
More information on British control system: • Controlling Trains - N...
More information on Semaphore and Tablet passing: • HORSTED KEYNES BOX
Негізгі бет Ғылым және технология Sri Lanka Rail Traffic Control
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