Signaling systems put into service by British Railways, Western Region, embodies electronic interlocking equipment in which no relays are used and which is believed to be first electronic interlocking plant in world; details on contact panel component failure effect, "inhibit" function, additional units, and other mechanical characteristics.
Electronic signalling installation at Henley-on-Thames
Ry Gaz
Railway Gazette ; 116 , n 3
1962
Aufsatz (Zeitschrift)
Englisch
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