The Signalling Record Society

RailRef Line Codes OG

An early form of Block working was introduced to control traffic passing through Box Tunnel by the Great Western Railway in 1847.

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
OG001 GC403 NW797	Waterloo Sidings, Oldham - Ashton O. A. & G. B. Junction LYR datum Stockport Junction, Guide Bridge 5m51c Oldham Waterloo Sidings LY004 NW812 Oldham Clegg Street Scottfield Junction GC404 Sheep Washers Lane Park Bridge Ashton Oldham Road 1m54c Ashton O.A.& G.B. Junction LYR OG003	OAG2
OG002 GC405 NW798	Waterloo Sidings, Oldham - Goods Yard datum Oldham Waterloo Sidings LY004 NW812 Oldham Clegg Street Goods
OG003 GC400 NW793	Ashton O. A. & G. B. Junction LYR - Stockport Junction, Guide Bridge GCR 1m50c Ashton O. A. & G. B. Junction LYR OG001 1m29c Ashton Moss South Junction GC402 Ashton Moss 0m53c Crowthorn Junction Canal Junction 0m00c Stockport Junction, Guide Bridge GC370 DJO2: Ashton OAGB Junction - Crowthorn Junction OAG1: Crowthorn Junction - Stockport Junction	DJO2 OAG1
was OG004	Removed to the Great Central Railway listing as GC402.
OG005 GC401 NW794	Canal Junction, Guide Bridge - Audenshaw Junction West GCR datum 0m00c Audenshaw Junction West GC370 0m28c Canal Junction OG003	OAU