The Signalling Record Society
ELR to RailRef Correlation - ELR Codes U
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Signal Fact 59
The Great Western Railway started developing its automatic train control (ATC) system with a trial in 1906.
The system was installed across the Great Western Railway between 1910 and 1930.
|UCJ||yes||Carlisle, Upperby Junction - Caldew Junction||NW962
|UCX||Caldercruix Upper Branch||NB247|
|UDS||yes||Doncaster, Up Decoy Sidings + Low Ellers Curve||SY011|
|UHL||yes||Wembley Central - Willesden High Level||NW014|
|ULR||yes||Carlisle Upperby Junction - London Road Junction (Through Siding)||NW963|
|UPG||yes||Upminster - Grays||MR042|
|USS||yes||Upside Sidings, Euston||NW002|
|USY||yes||Westbury Up Sidings|