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Signal Fact 30

The Norwich & Yarmouth Railway introduced block telegraph working in 1848 using Cooke & Wheatstone 1830s style instruments.

The instruments were used for general messages as well as authorising train movements.

Severn & Wye Railway (GWR, MR)

This page should be regarded as “Work in Progress”. The webmaster will welcome additional information for this page.

In the list below the information is set out in tabular form, spread over four columns. The column entries are -

RailRef	The Line Code used in RailRef system.
Line Detail	The principal locations included within the Line Code. They are arranged in 'down' direction order. Locations shown are primarily stations and junctions to allow easy cross check against published atlases. Signal box names appear in italics where these are 'intermediate' to stations or have been shown to facilitate links from other pages on this web site. The inclusion of a station or junction name does not imply that there was always a signal box of that same name!
SBR	The section reference used in the relevant Signal Box Register published by the Society.
ELR	The corresponding Engineer's Line Reference(s). This will be blank for railways that never came within British Railways terms of reference. It will also be blank where British Railways had no surviving responsibility for infrastructure at the time the ELR system came into use.

RailRef	Line Detail	ELR
SV001 GW400 MR310	Severn & Wye Line 0m00c Berkeley Road Junction MR290 0m14c Berkeley Road 1m26c Berkeley Loop Junction GW401 2m24c Berkeley 3m43c Oldminster Junction SV002 3m45c Docks Branch Junction SV003 4m02c Goods Lines Junction SV002 4m15c Sharpness (2nd) 4m24c North Dock Junction SV004 5m40c Severn Bridge 7m71c Otters Pool Junction SV005 8m15c Lydney Junction station 8m19c Harbour Road LC 8m20c Lydney Junction (DFR) 8m22c Lydney Junction SV006 8m28c Engine Shed Junction SV007 8m34c Lydney Bypass LC 8m41c St Mary's Halt (DFR) 8m73c Lydney Town 8m76c Lydney Town LC 9m33c Middle Forge Junction (DFR) 9m35c Norchard Colliery Branch Junction SV009 9m58c Norchard (DFR) 10m54c Tufts Junction (Oakwood Branch Junction) SV010 10m60c Tufts Junction (Loop Line Junction) SV011 11m22c Whitecroft 12m19c Parkend Goods Junction SV012 12m25c Parkend 12m32c Yorkley Road LC 12m51c Travellers Rest Crossing 12m71c Parkend Royal Branch Junction SV013 12m71c Coleford Branch Junction SV014 Coleford Junction Platform 13m50c Bickslade Siding SV017 14m51c Cannop Siding SV018 14m66c Speech House Road 14m70c Wimberry Branch Junction SV019 Speech House Hill Branch Junction SV020c Whitegates Junction SV021 16m33c Serridge Junction SV022 Serridge Platform 17m27c Drybrook Junction SV026 17m27c Drybrook Junction SV011 17m32c Drybrook Road Bilson Road Platform 17m69c Laymoor Junction SV024 18m30c Cinderford Junction GW391 18m60c Cinderford Town 8m12c to 12m42c now Dean Forest Railway. Article: Railway World, October 1970 (Severn Bridge).	SAW
SV002 GW402 MR311	Oldminster Goods Lines datum Berkeley Road Junction 3m43c Oldminster Junction SV001 4m02c Goods Lines Junction SV001
SV003 GW403 MR312	Sharpness Docks Lines datum Berkeley Road Junction 3m45c Docks Branch Junction SV001 Sharpness (1st) Sharpness Docks Lines	SSS
SV004 GW404 MR313	Sharpness Docks North Branch datum Berkeley Road Junction 4m24c North Dock Junction SV001 5m01c North Docks	SSN
SV005 GW405 MR314	Lydney East Loop datum Berkeley Road Junction 7m71c Otters Pool Junction SV001 8m01c Lydney East Loop Junction GW390	LEP
SV006 GW406 MR315	Lydney West Loop datum Berkeley Road Junction 8m47c Lydney West Loop Junction GW390 8m22c Lydney Junction SV001	LWL
SV007 GW407 MR316	Lydney Lower Docks Branch datum Berkeley Road Junction 8m28c Engine Shed Junction SV001 8m60c Upper Dock Junction SV008 9m72c Lower Docks	LLD
SV008 GW408 MR317	Lydney Upper Docks Branch datum Berkeley Road Junction 8m60c Upper Dock Junction SV007 9m16c Upper Dock 9m50c Pine End Factory	LUK
SV009 GW409 MR318	West Gloucestershire Power Station Branch 9m35c Norchard Colliery Branch Junction SV001 Norchard Colliery West Gloucestershire Power Station
SV010 GW410 MR319	Oakwood Branch datum Berkeley Road Junction 10m54c Tufts Junction SV010 11m64c Princess Royal Colliery	SOD
SV011 GW411 MR320	Mineral Loop datum Berkeley Road Junction 10m60c Tufts Junction (Loop Line Junction) SV001 Acorn Depot 13m20c Brick Pit Sidings Junction 13m45c New Fancy Colliery Junction 13m45c Moseley Green Sidings 15m39c Lightmoor Colliery Junction 17m01c Crump Meadow Colliery Junction 17m29c Drybrook Road Junction SV001	TDZ
SV012 GW412 MR321	Parkend Goods Branch datum Berkeley Road Junction 12m19c Parkend Goods Junction SV001 12m44c Parkend Goods	SPG
SV013 GW413 MR322	Parkend Royal Branch 12m71c Parkend Royal Branch Junction SV001 13m33c Parkend Royal Colliery	PRB
SV014 GW414 MR323	Coleford Branch datum Berkeley Road Junction 12m71c Coleford Branch Junction SV001 14m33c Futterill Branch Junction SV015 15m47c Milkwall 15m49c Sling Branch Junction SV016 16m46c Coleford 16m49c S&W / GWR Boundary GW386	CFS
SV015 GW415 MR324	Futterhill Branch datum Berkeley Road Junction 14m33c Futterill Branch Junction SV014 14m54c Futterill	SFZ
SV016 GW416 MR325	Sling Branch datum Berkeley Road Junction 15m49c Sling Branch Junction SV014 16m24c Sling Sidings	SSB
SV017 GW417 MR326	Bicslade Tramway datum Berkeley Road Junction 13m50c Bicslade Siding SV001 14m45c Bixhead Quarries	BIZ
SV018 GW418 MR327	Howlerslade Tramway 14m51c Cannop Siding SV001 Quarries	HTZ
SV019 GW419 MR328	Wimberry Branch datum Berkeley Road Junction 14m70c Wimberry Branch Junction SV001 15m66c Wimberry SV020	WIY
SV020 GW420 MR329	Wimberry Tramway datum Berkeley Road Junction 15m66c Wimberry SV019 16m32c Quarries
SV020a	Speech House Hill Colliery Branch datum Berkeley Road Junction 15m20c Branch Junction SV001 15m76c Speech House Hill Colliery See here for history.	SHZ
SV021 GW421 MR330	Whitegates Chord (Speculation Curve) proposed, not built Whitegates Junction SV001 Speculation Colliery SV022
SV022 GW422 MR331	Lydbrook Branch datum Berkeley Road Junction 16m33c Serridge Junction SV001 17m38c Mierystock Sidings 18m04c Brierly Siding 18m40c Waterloo Sidings 18m78c Upper Lydbrook Bishops Wood Tramway Junction SV023 19m63c Lower Lydbrook 20m60c Lydbrook Junction station 20m69c Lydbrook Junction GW384	SLB
SV023 GW423 MR332	Bishopswood Tramway Bishops Wood Tramway Junction SV022 ???	BSZ
SV024 GW424 MR333	Cinderford North Loop datum Berkeley Road Junction via Speech House 18m14c Bilson North Junction GW391 18m00c Cinderford South Loop Junction SV025 17m69c Laymoor Junction SV001	LCZ1
SV025 GW425 MR334	Cinderford South Loop datum Berkeley Road Junction via Speech House 18m00c Cinderford South Loop Junction SV024 18m14c Bilson South Junction GW391	LCZ2
SV026 GW426 MR335	other lines in the Forest of Dean Trafalgar Colliery Branch Trafalgar Colliery Colliery / SWY boundary Drybrook Road Junction SV001

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