The Signalling Record Society
ELR to RailRef Correlation - ELR Codes X
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Signal Fact 16
An early form of Block working was introduced to control traffic passing through Box Tunnel by the Great Western Railway in 1847.
Explanation of column content is here.
| ELR | BR-NR | Line Description | RailRef |
|---|---|---|---|
| XRC | Crossrail Central Section | ||
| XRS | Crossrail South Section | ||
| XTD | yes | Charing Cross - Dover Western Docks | SE001 SE040 |
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