List of Train Describers

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The following list of TD areas was last updated on 21th October 2016.

Specific information relating to each TD (such as ECS's/SOP's which give the S-Class data mapping, Block schematics which show all the berth steps within a TD and stepping tables which show which conditions must be met in order for description to step) can be found by clicking on the link in the 'ID' column.

User contributed maps, where available, show signal berths and their locations in relation to the railway. Because maps have been compiled using steps seen from the feed, the placement of berths may not be accurate in all locations.

General information relating to entire signalling areas can be found by clicking the link in the 'topic' column. This may include track and signalling maps released by Network Rail.


The column headings are as follows:

  • ID - identity of the train describer in TD messages. This is not necessarily the same as the plated signalbox ID. Where a link is provided you will find specific details relating to that TD area.
  • Name - the name of the train describer
  • Topic - the name of the topic - if unspecified, data is available on the 'all area' feed. Where a link is provided you will find generic details relating to that area.
  • SIG - whether signal aspects (on/off) are available
  • RTE - whether route set indications are available
  • TRS - whether Train Ready To Start (TRTS) indications are available
  • TRK - whether track occupation (track circuit or axle counter) indications are available
  • PTS - whether points (normal/reverse) indications are available
  • LXG - whether level crossing barrier control indications are available

A TD with the name of 'TBA' indicates a train describer which is planned, but details are not yet available. A '?' in one of the six S-Class columns indicates that this detail is not currently known

ID Name Topic SIG RTE TRS TRK PTS LXG
A2 Ashford IECC B TD_KENT_MCC_SIG_AREA Y Y Y
A3 Ashford Front-End TD TD_KENT_MCC_SIG_AREA Y Y
AD Ashford IECC A TD_KENT_MCC_SIG_AREA Y Y Y
AL Alnmouth TD_LNE_NE_SIG_AREA
AN Allington Junction TD_MC_EM_SIG_AREA Y
AS Aston TD_LNW_WMC_SIG_AREA
AW Acton Wells TD_ANG_SIG_AREA Y Y Y
BA Barnsley TD_LNE_NE_SIG_AREA
BD Bowesfield TD_LNE_NE_SIG_AREA Y Y
BE Basingstoke TD_WESS_SIG_AREA Y Y Y Y
BG WMCC Bromsgrove Corridor WestCAD (Planned 11/2016) TBD Y Y
BL Bristol TD_WWC_SIG_AREA
BM Barnham TD_SUSS_SIG_AREA Y Y Y
BN Birmingham New Street TD_LNW_WMC_SIG_AREA
BP Basingstoke (Poole - Wool) TD_WESS_SIG_AREA Y Y Y
BS Barnes TD_WESS_SIG_AREA Y Y Y
BX Basingstoke (WoE) TD_WESS_SIG_AREA Y Y Y Y
C1 SWCC Newport ITD TD_WWM_SIG_AREA Y Y Y
C2 SWCC Vale of Glamorgan ITD TD_WWM_SIG_AREA Y Y Y
C3 SWCC Shrewsbury North WestCAD TD_WWM_SIG_AREA Y Y
C4 WROC Shrewsbury-Newport (Planned 12/2018) TBD ? ? ? ? ? ?
C5 WROC North Wales Coast (Planned 12/2018) TBD ? ? ? ? ? ?
C6 WROC Port Talbot West (Planned 12/2018) TBD ? ? ? ? ? ?
CA Cambridge PSB TD_ANG_SIG_AREA Y Y Y Y
CC Colchester TD_ANG_SIG_AREA Y Y Y Y
CD Castleford TD_LNE_NE_SIG_AREA
CE Crewe PSB TD_LNW_C_SIG_AREA Y Y Y
CF Cardiff Decommissioned 12/2015 TD_WWM_SIG_AREA
CH Chichester TD_SUSS_SIG_AREA Y Y
CL Carlisle TD_LNW_LC_SIG_AREA
CM Carmuirs East TD_SE_SIG_AREA Y Y Y Y
CS Chester TD_LNW_C_SIG_AREA
CT Channel Tunnel TD_KENT_MCC_SIG_AREA
CV Cherwell Valley TD_LNW_WMC_SIG_AREA Y Y
CY WMCC Coventry TD_LNW_WMC_SIG_AREA Y Y Y
D0 TBA (Planned 12/2019) TBA ? ? ? ? ? ?
D1 TVSC Reading IECC A TD_WTV_SIG_AREA Y Y Y Y
D2 TVSC Reading IECC B TD_WTV_SIG_AREA Y Y Y Y
D3 TVSC Paddington IECC TD_WTV_SIG_AREA Y Y Y Y
D4 TVSC Hayes IECC TD_WTV_SIG_AREA Y Y Y Y
D5 TVSC Didcot IECC TD_WWC_SIG_AREA Y Y Y
D6 TVSC Maidenhead IECC TD_WTV_SIG_AREA Y Y Y
D7 TVSC Swindon IECC TD_WWC_SIG_AREA Y Y Y
D8 TVSC Didcot (IECC) TD_WWC_SIG_AREA ? ? ? ? ? ?
D9 TVSC Stoke Gifford IECC TD_WTV_SIG_AREA ? ? ? ? ? ?
DA TBA (Planned 11/2016) TBA ? ? ? ? ? ?
DN (Not commissioned)
DR Doncaster TD_LNE_GN_SIG_AREA
DY Derby TD_MC_EM_SIG_AREA Y Y
E1 Edgeley No 1 TD_LNW_C_SIG_AREA Y
EA Edinburgh IECC A TD_SE_SIG_AREA Y Y Y Y
EB Edinburgh IECC B TD_SE_SIG_AREA Y Y Y Y
EC Edinburgh IECC C TD_SE_SIG_AREA Y Y Y Y
ED Edinburgh IECC D TD_SE_SIG_AREA Y Y Y Y
EH Eastleigh TD_WESS_SIG_AREA Y Y Y Y Y Y
EK East Kent (Gillingham) TD_KENT_MCC_SIG_AREA Y Y Y Y Y Y
EN Cambridge IECC TD_ANG_SIG_AREA Y Y Y Y
ES TBROC East Sussex MCS TD_SUSS_SIG_AREA Y Y Y Y Y Y
EX Exeter TD_WWC_SIG_AREA Y
FE Ferrybridge TD_LNE_GN_SIG_AREA Y Y Y
FH Feltham TD_WESS_SIG_AREA Y
G1 WSSC Glasgow TD_SW_SIG_AREA Y Y Y Y
G2 WSSC Paisley TD_SW_SIG_AREA Y Y Y Y Y
G3 WSSC Motherwell Area WestCAD (Planned 04/2017) TBD ? ? ? ? ? ?
GD Guildford TD_WESS_SIG_AREA
GL Gloucester ITD TD_WWC_SIG_AREA
HG Harrogate IECC TD_LNE_NE_SIG_AREA Y Y Y Y
HM Healey Mills TD_LNE_NE_SIG_AREA Y Y Y Y
HN Heaton Norris TD_LNW_C_SIG_AREA Y
HT Havant TD_WESS_SIG_AREA Y Y Y
HU Huddersfield TD_LNE_NE_SIG_AREA
IH Inverness Highlands WestCAD (Planned 03/2019) ? ? ? ? ? ? ?
K2 Kings Cross (Hertford Loop) TD_LNE_GN_SIG_AREA Y Y Y
KN WMCC Kings Norton WestCAD (Planned 11/2016) TBD Y Y
KX Kings Cross TD_LNE_GN_SIG_AREA
L2 Lincoln East TD_MC_EM_SIG_AREA Y Y
LA Lancing TD_SUSS_SIG_AREA Y
LB London Bridge TD_KENT_MCC_SIG_AREA Y Y
LC WMCC Leamington Corridor TD_LNW_WMC_SIG_AREA Y Y Y
LE Leamington Spa TD_LNW_WMC_SIG_AREA
LN Lincoln TD_MC_EM_SIG_AREA Y Y Y
LR EMSC Leicester TD_MC_EM_SIG_AREA Y
LS Liverpool Street TD_ANG_SIG_AREA Y Y Y Y
M1 Liverpool WestCAD TD_LNW_C_SIG_AREA Y Y
M2 MRROC Manchester North TD_LNW_C_SIG_AREA Y Y
M3 MRROC Manchester Central TD_LNW_C_SIG_AREA Y Y
M4 MRROC Wavertree WestCAD (Planned 10/2017) TBD ? ? ? ? ? ?
M5 TBA (Planned 10/2017) TBA ? ? ? ? ? ?
M6 TBA (Planned 12/2018) TBA ? ? ? ? ? ?
M7 TBA (Planned 12/2018) TBA ? ? ? ? ? ?
M8 TBA (Planned 12/2018) TBA ? ? ? ? ? ?
M9 MRROC Blackpool Area WestCAD (Planned 05/2018) ? ? ? ? ? ? ?
MA Maidstone East TD_KENT_MCC_SIG_AREA Y
MD EMSC Mansfield TD_MC_EM_SIG_AREA Y Y Y
ME Marylebone IECC TD_LNW_WMC_SIG_AREA Y Y Y
MH Machynlleth TD_WWM_SIG_AREA Y Y Y
ML Motherwell TD_SW_SIG_AREA Y Y Y
MO Morpeth TD_LNE_NE_SIG_AREA
MP Manchester Piccadilly TD_LNW_C_SIG_AREA Y Y Y Y
MS Manchester South TD_LNW_C_SIG_AREA Y Y
MZ Manchester East TD_LNW_C_SIG_AREA Y Y Y
NE EMSC Erewash TD_MC_EM_SIG_AREA Y Y Y
NJ Neasden Junction TBA ? ? ? ? ? ?
NK North Kent TD_KENT_MCC_SIG_AREA Y Y Y Y Y
NM EMSC Nottingham TD_MC_EM_SIG_AREA Y Y Y
NT Newport PSB (Decommissioned 10/2012) TD_WWM_SIG_AREA ? ? ? ? ? ?
NX East London Line TD_ANG_SIG_AREA ? ? ? ? ? ?
OX Oxford TD_WWC_SIG_AREA
PB Peterborough TD_LNE_GN_SIG_AREA
PH Plymouth TD_WWC_SIG_AREA
PT Port Talbot TD_WWM_SIG_AREA
PX Preston TD_LNW_LC_SIG_AREA
Q1 Romford ROC (Stratford Workstation) (Planned 09/2016) TBD Y Y Y
Q2 Romford ROC (Shenfield Workstation) (Planned 11/2016) TBD ? ? ? ? ? ?
R1 Rugby SCC (Watford - Bletchley ITD) TD_WCS_SIG_AREA Y Y Y Y Y
R2 Rugby SCC (Northampton - Rugby ITD) TD_WCS_SIG_AREA Y Y Y Y Y
R3 Rugby ROC (Stafford) WestCAD ? Y Y
RA Radyr TD_WWM_SIG_AREA
RT Ridgmont TD_WCS_SIG_AREA Y Y Y Y Y
RW Rochdale West TD_LNW_C_SIG_AREA Y Y Y
SA Saltley TD_LNW_WMC_SIG_AREA
SC Scunthorpe TD_LNE_GN_SIG_AREA
SD Sheffield (Decommissioned 05/2016) TD_LNE_GN_SIG_AREA
SE Shenfield IECC TD_ANG_SIG_AREA Y Y Y
SH Slough A (Decommissioned 04/2015) TD_WTV_SIG_AREA Y
SI Stratford IECC TD_ANG_SIG_AREA Y Y Y
SJ WMCC Stourbridge TD_LNW_WMC_SIG_AREA Y Y Y
SK Stoke On Trent TD_LNW_C_SIG_AREA Y Y Y Y Y
SM Stirling Middle TD_SE_SIG_AREA Y Y
SN Swindon A ITD (Decommissioned 02/2016) TD_WWC_SIG_AREA
SO South Tottenham TD_ANG_SIG_AREA
SS Merseyrail IECC TD_LNW_C_SIG_AREA Y Y Y Y
SU Surbiton (Woking) TD_WESS_SIG_AREA Y
SX Saxmundham MCS TD_ANG_SIG_AREA Y Y Y Y
T1 Tyneside 1 IECC TD_LNE_NE_SIG_AREA Y Y Y
T2 Tyneside 2 IECC TD_LNE_NE_SIG_AREA Y Y Y
TB Three Bridges TD_SUSS_SIG_AREA Y Y
TD WMCC Telford TD_LNW_WMC_SIG_AREA Y Y Y
TE Tonbridge TD_KENT_MCC_SIG_AREA Y Y
TH Thrumpton TD_LNE_GN_SIG_AREA Y Y
TN EMSC Chesterfield TD_MC_EM_SIG_AREA Y
TW Tweedmouth TD_LNE_NE_SIG_AREA
TY Tees Yard (Ryhope) TD_LNE_NE_SIG_AREA Y Y Y
U2 Upminster 2 IECC TD_ANG_SIG_AREA Y Y Y Y
U3 Upminster 3 IECC TD_ANG_SIG_AREA Y Y Y Y
UR Upminster A IECC TD_ANG_SIG_AREA Y Y Y Y
VC London Victoria TD_SUSS_SIG_AREA Y Y
VT Thameslink South (Decommissioned 03/2015) TD_SUSS_SIG_AREA Y Y Y
W2 Woking (Farnham) TD_WESS_SIG_AREA Y Y Y
WA Warrington PSB TD_LNW_C_SIG_AREA Y Y
WC Wembley C Sidings
WD Winsford TD_LNW_C_SIG_AREA
WE Worksop TD_LNE_GN_SIG_AREA Y
WG West Anglia IECC TD_ANG_SIG_AREA
WH West Hampstead PSB TD_MC_EM_SIG_AREA ? ? ? ? ? ?
WI Wimbledon NCP TD_WESS_SIG_AREA Y Y Y
WJ Wembley Mainline (Watford) WestCAD TD_WCS_SIG_AREA Y Y
WK Wakefield Kirkgate TD_LNE_NE_SIG_AREA
WL WMCC Walsall WestCAD ? Y Y Y
WN WMCC Water Orton TD_LNW_WMC_SIG_AREA Y Y
WO Wolverhampton WestCAD TD_LNW_WMC_SIG_AREA Y Y
WS Willesden Suburban TD_WCS_SIG_AREA
WT Thameslink North (Decommissioned 03/2015) TD_MC_EM_SIG_AREA Y Y Y
WW Westbury TD_WWC_SIG_AREA Y
WY Wembley TD_WCS_SIG_AREA
X0 TBROC Thameslink Corridor TD_SUSS_SIG_AREA Y Y Y Y
X1 TBROC London Bridge Central WestCAD TD_SUSS_SIG_AREA Y Y Y Y
X2 TBROC Charing Cross TBD Y Y Y Y
X3 TBROC Cannon Street WestCAD TBD Y Y Y Y
X6 TBROC Streatham WestCAD TBD Y Y Y
XB Macclesfield TD_LNW_C_SIG_AREA
XE Warrington Central TD_LNW_C_SIG_AREA
XH Stafford No 4 (decommissioned 09/2015) TD_LNW_C_SIG_AREA
XJ Stafford No 5 (decommissioned 09/2015) TD_LNW_C_SIG_AREA
XL Hunts Cross TD_LNW_C_SIG_AREA
XP Manchester North (Decommissioned 04/2015)
XZ Liverpool Lime Street TD_LNW_C_SIG_AREA
Y0 YKROC North Lincs WestCAD TBD Y Y Y Y
Y1 TBA (Planned 12/2022) TBA ? ? ? ? ? ?
Y2 York IECC 2 TD_LNE_NE_SIG_AREA Y Y Y
Y3 York IECC 3 TD_LNE_NE_SIG_AREA Y Y Y
Y4 YKROC Sheffield WestCAD ? Y Y Y Y
Y5 TBA (Planned 03/2018) TBA ? ? ? ? ? ?
Y6 TBA (Planned 10/2018) TBA ? ? ? ? ? ?
YK York IECC TD_LNE_NE_SIG_AREA
YO Yoker IECC TD_SW_SIG_AREA Y Y Y
ZA Ashford TDC TD_KENT_MCC_SIG_AREA
ZB Bournemouth TDC TD_WESS_SIG_AREA Y
ZE Eastbourne TDC TD_SUSS_SIG_AREA
ZG Guildford TDC TD_WESS_SIG_AREA Y Y
ZH Horsham TDC TD_SUSS_SIG_AREA
ZR Rainham TDC TD_KENT_MCC_SIG_AREA
ZY Yeovil TDC TD_WESS_SIG_AREA Y Y Y


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