The Signalling Record Society
ELR to RailRef Correlation - ELR Codes U
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Signal Fact 29
The first structures which became known as signal boxes were opened by the South Eastern Railway on the approaches to London Bridge in the very early 1860s.
Built by Saxby & Farmer on legs and spanning the tracks, they featured semaphore signals on posts elevated above the signal box structure.
|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|