Difference between revisions of "List of Train Describers"

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Revision as of 21:06, 21 April 2023

The following list of train describers was last updated on 26th February 2023.

Specific information relating to each TD (such as ECSs/SOPs 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
  • Commissioning - the date the train describer was commissioned or when it is expected.

A TD with the name of 'TBD' 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. A Commissioning date marked * refers to the first messages in the feed, and may not relate to live signalling.

Train Describers

Current and Planned

ID Name Topic SIG RTE TRS TRK PTS LXG Commissioning
A2 Ashford IECC B TD_KENT_MCC_SIG_AREA
A3 Ashford Front-End TD TD_KENT_MCC_SIG_AREA
AD Ashford IECC A TD_KENT_MCC_SIG_AREA
AL Alnmouth SB TD TD_LNE_NE_SIG_AREA
AN Allington Junction TD_MC_EM_SIG_AREA
AS Aston SCC TD TD_LNW_WMC_SIG_AREA
AW Acton Wells TD_ANG_SIG_AREA
B1 BAROC Strawberry Hill Scalable 2021-03-30*
B2 BAROC Ascot Scalable 2022-03-30*
BA Barnsley PSB TD TD_LNE_NE_SIG_AREA 2021-04-11* (S-Class enabling)
BE Basingstoke TD_WESS_SIG_AREA
BG WMSC Bromsgrove Corridor WestCAD 2016-11-07
BL Bristol PSB ITD TD_WWC_SIG_AREA
BM Barnham DTD TD_SUSS_SIG_AREA
BP Basingstoke (Poole - Wool) TD_WESS_SIG_AREA
BS Barnes TD TD_WESS_SIG_AREA
BU EMCC Burton Area WestCAD 2018-08-17*
BX Basingstoke (WoE) TD_WESS_SIG_AREA
C0 TfW CVLICC TAM Area WestCAD Planned 2023-05-01
C1 SWCC Newport Corridor WestCAD TD_WWM_SIG_AREA
C2 SWCC Cardiff Area MCS TD_WWM_SIG_AREA
C3 SWCC Shrewsbury North WestCAD TD_WWM_SIG_AREA
C5 WROC North Wales Coast WestCAD 2018-03-09*
C6 SWCC Swansea Area WestCAD 2019-02-26*
CA Cambridge ITD TD_ANG_SIG_AREA
CC Colchester TD_ANG_SIG_AREA
CD Castleford TD_LNE_NE_SIG_AREA 2021-04-04* (S-Class enabling)
CE Crewe PSB TD_LNW_C_SIG_AREA
CH Chichester TD_SUSS_SIG_AREA
CL Carlisle PSB TD TD_LNW_LC_SIG_AREA
CS Chester PSB TD_LNW_C_SIG_AREA
CT Channel Tunnel TD_KENT_MCC_SIG_AREA
CV WMSC Cherwell Valley WestCAD TD_LNW_WMC_SIG_AREA 2016-08-08
CY WMSC Coventry WestCAD TD_LNW_WMC_SIG_AREA
D0 TVSC Bristol Temple Meads Area Scalable IECC 2018-03-29*
D1 TVSC Reading IECC A TD_WTV_SIG_AREA
D2 TVSC Reading IECC B TD_WTV_SIG_AREA
D3 TVSC Paddington Area Scalable IECC TD_WTV_SIG_AREA
D4 TVSC Hayes Area Scalable IECC TD_WTV_SIG_AREA
D5 TVSC Didcot IECC TD_WWC_SIG_AREA
D6 TVSC Maidenhead Area Scalable IECC TD_WTV_SIG_AREA
D7 TVSC Swindon Area IECC TD_WWC_SIG_AREA
D9 TVSC Stoke Gifford IECC TD_WTV_SIG_AREA 2016-08-30
DA TVSC Acton Area Scalable IECC 2021-12-21*
DR Doncaster PSB TD TD_LNE_GN_SIG_AREA
DU Dundee TD 2021-09-29*
DY EMCC Derby Area WestCAD TD_MC_EM_SIG_AREA 2018-09-03
E1 Edgeley No 1 TD_LNW_C_SIG_AREA
EA Edinburgh SCC IECC "A" (Scalable) TD_SE_SIG_AREA 2022-11-20*
EB Edinburgh SCC IECC "B" TD_SE_SIG_AREA Planned decommissioning 2023-06-10
EB Edinburgh SCC IECC "B" (Scalable) TD_SE_SIG_AREA Planned 2023-06-10
EC Edinburgh SCC IECC "C" TD_SE_SIG_AREA Planned decommissioning 2023-10-29
EC Edinburgh SCC IECC "C" (Scalable) TD_SE_SIG_AREA Planned 2023-10-29
ED Edinburgh SCC IECC "D" (Scalable) TD_SE_SIG_AREA
EE Edinburgh SCC IECC "E" 2022-11-20*, planned decommissioning 2023-10-29
EE Edinburgh SCC IECC "E" (Scalable) ? ? ? ? ? ? Planned 2023-10-29
EH Eastleigh TD_WESS_SIG_AREA
EK East Kent MCS ITD TD_KENT_MCC_SIG_AREA
EN Cambridge IECC (Ely - Norwich) TD_ANG_SIG_AREA
EX Exeter TD_WWC_SIG_AREA
FE Ferrybridge TD_LNE_GN_SIG_AREA
FH Feltham ASC TD TD_WESS_SIG_AREA Planned decommissioning 2023-08
G1 WSSC Glasgow Area WestCAD TD_SW_SIG_AREA
G2 WSSC Paisley ITD TD_SW_SIG_AREA
G3 WSSC Newton/Whifflet Area WestCAD 2017-04-18
G4 WSSC Motherwell/Carstairs Area WestCAD 2018-08-16*
GD Guildford TD_WESS_SIG_AREA
GL Gloucester ITD TD_WWC_SIG_AREA
HG Harrogate IECC TD_LNE_NE_SIG_AREA
HN Heaton Norris TD_LNW_C_SIG_AREA
HT Havant TD_WESS_SIG_AREA
IH Inverness Highlands WestCAD 2017-12-05*
IR Inverness RETB 2023-02-10*
KG EMCC Kettering Area WestCAD 2018-02-21*
KM EXROC Mid-Cornwall Workstation ? ? ? ? ? ? Planned 2023-11
KN WMSC Kings Norton WestCAD 2016-11-07
L1 Lincoln West ? ? ? ? ? ? Planned 2023-06-01 to 2023-08-31
L2 Lincoln East TD_MC_EM_SIG_AREA
LA Lancing TD_SUSS_SIG_AREA
LC WMSC Leamington Corridor TD_LNW_WMC_SIG_AREA
LN Lincoln TD_MC_EM_SIG_AREA Planned decommissioning 2023-06-01 to 2023-08-31
LR EMCC Leicester Area WestCAD TD_MC_EM_SIG_AREA
M0 MRROC Lime Street WestCAD 2018-07-26*
M1 MRROC Liverpool Area WestCAD TD_LNW_C_SIG_AREA
M2 MRROC Manchester North WestCAD TD_LNW_C_SIG_AREA
M3 MRROC Manchester Central WestCAD TD_LNW_C_SIG_AREA
M4 MRROC Wavertree (East) WestCAD 2018-05-07*
M5 MRROC Wavertree (West) WestCAD 2018-12-19*
M6 MRROC Macclesfield Area WestCAD 2022-08-29*
M7 MRROC Crewe South Area ? ? ? ? ? ? Planned 2023-08
M8 MRROC Crewe Independent Lines ? ? ? ? ? ? Planned 2023-08
M9 MRROC Blackpool Area WestCAD 2018-01-29
MA Maidstone East TD_KENT_MCC_SIG_AREA
MD EMCC Mansfield TD_MC_EM_SIG_AREA
ME Marylebone Chilterns IECC TD_LNW_WMC_SIG_AREA
MH Machynlleth TD_WWM_SIG_AREA
MO Morpeth SB TD TD_LNE_NE_SIG_AREA
MP Manchester Piccadilly PSB TD TD_LNW_C_SIG_AREA
MS Manchester South TD_LNW_C_SIG_AREA
MZ Manchester East WestCAD TD_LNW_C_SIG_AREA
NE EMCC North Erewash Area WestCAD TD_MC_EM_SIG_AREA
NJ Neasden Jn TD ? ? ? ? ? ? 2016
NK Ashford North Kent MCS TD_KENT_MCC_SIG_AREA
NL Colchester NYL Area MCS 2020-02-04*
NM EMCC Nottingham WestCAD TD_MC_EM_SIG_AREA
NS WMSC New Street Station WestCAD 2022-12-21*
NX East London Line TD_SUSS_SIG_AREA ? ? ? ? ? ?
PB Peterborough TD_LNE_GN_SIG_AREA Planned decommissioning 2023-05-27
PH Plymouth TD_WWC_SIG_AREA
PJ WMSC Proof House Jn WestCAD 2017-12-17*
PL Port Talbot PSB Llanelli WestCAD Planned 2023-03-28
PT Port Talbot TD_WWM_SIG_AREA
PX Preston PSB TD TD_LNW_LC_SIG_AREA
Q0 ROROC Crossrail RCC (Core) 2019-02-14*
Q1 ROROC Stratford IECC 2016-11-06
Q2 ROROC Shenfield IECC 2017-02-26
Q3 ROROC West Anglia Area IECC 2019-03-08*
Q4 ROROC Liverpool Street Area IECC 2020-09-13*[1]
Q5 ROROC LT&S (Main) Area IECC 2020-09-27[1]
Q6 ROROC LT&S (Loop) Area IECC 2020-09-27[1]
R1 Rugby SCC (Watford - Bletchley ITD) TD_WCS_SIG_AREA
R2 Rugby SCC (Northampton - Rugby ITD) TD_WCS_SIG_AREA
R3 RYROC Stafford Area WestCAD 2015-09-01
R4 RYROC Colwich Area WestCAD ? ? ? ? ? ? Planned 2023-07-15
R5 RYROC Claydon Area ? ? ? ? ? ? Planned 2024-07
RA Radyr TD_WWM_SIG_AREA Planned decommissioning 2023-05-01
RT Marston Vale MCS TD_WCS_SIG_AREA
RW Rochdale West TD_LNW_C_SIG_AREA
SC Scunthorpe TD_LNE_GN_SIG_AREA
SJ WMSC Stourbridge WestCAD TD_LNW_WMC_SIG_AREA
SK Stoke On Trent TD_LNW_C_SIG_AREA
SM Stirling Middle TD_SE_SIG_AREA
SO South Tottenham TD_ANG_SIG_AREA
SS Sandhills Area WestCAD TD_LNW_C_SIG_AREA 2022-03-27
SU Surbiton (Woking) TD_WESS_SIG_AREA
SV WMSC Stour Valley WestCAD 2017-12-17*
SX Saxmundham (East Suffolk) MCS TD_ANG_SIG_AREA
T0 TYROC Ashington Workstation ? ? ? ? ? ? Planned 2023-12
T1 TYROC Newcastle/Gateshead Area WestCAD TD_LNE_NE_SIG_AREA 2021-12-25*
T2 TYROC Darlington Area WestCAD TD_LNE_NE_SIG_AREA 2021-12-25*
T3 TYROC Sunderland Area WestCAD 2021-12-25*
TB Three Bridges ASC ITD TD_SUSS_SIG_AREA
TD WMSC Telford TD_LNW_WMC_SIG_AREA
TE Tonbridge TD_KENT_MCC_SIG_AREA
TH Thrumpton TD_LNE_GN_SIG_AREA
TN EMCC Chesterfield Area WestCAD TD_MC_EM_SIG_AREA
TW Tweedmouth SB TD TD_LNE_NE_SIG_AREA
U3 Upminster 3 IECC TD_ANG_SIG_AREA
VC London Victoria TD_SUSS_SIG_AREA
W2 Woking (Farnham) TD_SUSS_SIG_AREA
WA Warrington PSB TD_LNW_C_SIG_AREA
WC Wembley C Sidings 2015-06-07
WD Winsford PSB TD_LNW_C_SIG_AREA
WE Worksop TD_LNE_GN_SIG_AREA
WH West Hampstead PSB TD_MC_EM_SIG_AREA
WI Wimbledon NCP TD_WESS_SIG_AREA
WJ Wembley Mainline (Watford) WestCAD TD_WCS_SIG_AREA
WK Wakefield Kirkgate TD_LNE_NE_SIG_AREA
WL WMSC Walsall WestCAD
WN WMSC Water Orton WestCAD TD_LNW_WMC_SIG_AREA
WO WMSC Wolverhampton WestCAD TD_LNW_WMC_SIG_AREA
WS Willesden Suburban TD_WCS_SIG_AREA
WW Westbury TD_WWC_SIG_AREA
WY Wembley Mainline PSB TD_WCS_SIG_AREA
X0 TBROC Thameslink Core WestCAD TD_SUSS_SIG_AREA 2015-03-15
X1 TBROC London Bridge Central WestCAD TD_SUSS_SIG_AREA 2015-01-05
X2 TBROC Charing Cross WestCAD 2016-01-04
X3 TBROC Cannon Street WestCAD 2016-08-30
X7 TBROC East Sussex MCS 2019-12-02*
X8 TBROC Victoria Kent WestCAD 2022-12-21*
XA TBROC Victoria Sussex WestCAD (link 1) 2022-12-27*
XB TBROC Victoria Sussex WestCAD (link 2) 2022-12-24*
XE Warrington Central TD_LNW_C_SIG_AREA
XL Hunts Cross TD_LNW_C_SIG_AREA
Y0 YKROC North Lincs WestCAD 2015-12-30
Y1 YKROC York Area IECC 2018-12-25*
Y2 YKROC Leeds City Area IECC TD_LNE_NE_SIG_AREA 2018-12-25*
Y3 YKROC Leeds North West Area IECC TD_LNE_NE_SIG_AREA 2018-12-25*
Y4 YKROC Sheffield WestCAD 2016-05-02
Y5 YKROC Brough WestCAD 2018-11-07*
Y6 YKROC Huddersfield WestCAD 2018-01-18*
Y7 YKROC Halifax WestCAD 2018-10-17*
Y8 YKROC Kings Cross North WestCAD 2018-11-26*
Y9 YKROC Kings Cross South WestCAD 2021-04-14*
YA YKROC Hartlepool Area WestCAD 2021-02-07
YB YKROC Middlesbrough Area WestCAD 1 2021-11-15*
YC YKROC Peterborough Area WestCAD Planned 2023-08-28
YD YKROC Huntingdon Area WestCAD Planned 2023-08-28
YO Yoker SCC MCS TD_SW_SIG_AREA
Z1 Test TD Dummy TD used for testing, data should be ignored 2022-08-02*
ZA Ashford TDC TD_KENT_MCC_SIG_AREA
ZB Bournemouth TDC TD_WESS_SIG_AREA
ZG Guildford TDC TD_WESS_SIG_AREA
ZH Horsham TDC TD_SUSS_SIG_AREA
ZR Rainham TDC TD_KENT_MCC_SIG_AREA
ZY Yeovil TDC - Salisbury & Exmouth Jn TD_WESS_SIG_AREA ?

Decommissioned

ID Name Topic SIG RTE TRS TRK PTS LXG Abolished
BD Bowesfield TD_LNE_NE_SIG_AREA 2019-03-09
BN Birmingham New Street PSB TD_LNW_WMC_SIG_AREA 2022-12-24*
CF Cardiff TD_WWM_SIG_AREA 2015-12-30
CM Carmuirs East TD_SE_SIG_AREA ~2017-12-26
DN (Not commissioned)
DY Derby TD_MC_EM_SIG_AREA 2018-09-01
ES TBROC East Sussex MCS TD_SUSS_SIG_AREA 2019-12-02
F2 Feltham (Shepperton Branch) IECC 2021-04-02 (commissioned 2019-06-23)
HM Healey Mills TD_LNE_NE_SIG_AREA ~2018-01-22
HU Huddersfield TD_LNE_NE_SIG_AREA ~2018-01-22
K2 Kings Cross (Hertford Loop) TD_LNE_GN_SIG_AREA 2018-12-02
KX Kings Cross TD_LNE_GN_SIG_AREA 2022-03-24
LB London Bridge ASC TD TD_KENT_MCC_SIG_AREA 2020-07-25
LE Leamington Spa TD_LNW_WMC_SIG_AREA 2016-08-07
LS Liverpool Street IECC "A" TD_ANG_SIG_AREA 2020-09-13[1]
ML Motherwell PSB TD TD_SW_SIG_AREA 2019-12-25
NT Newport PSB TD_WWM_SIG_AREA 2012-10-29
OX Oxford PSB TD_WWC_SIG_AREA 2018-07-07
SA Saltley TD_LNW_WMC_SIG_AREA 2016-11-07
SD Sheffield TD_LNE_GN_SIG_AREA 2016-05-02
SE Shenfield IECC (Liverpool Street IECC "C") TD_ANG_SIG_AREA 2017-02-26
SH Slough A TD_WTV_SIG_AREA 2015-04-07
SI Stratford IECC (Liverpool Street IECC "B") TD_ANG_SIG_AREA 2016-11-06
SN Swindon A ITD TD_WWC_SIG_AREA 2016-02-21
SS Merseyrail IECC TD_LNW_C_SIG_AREA 2022-03-27
T1 Tyneside 1 IECC TD_LNE_NE_SIG_AREA 2021-12-25
T2 Tyneside 2 IECC TD_LNE_NE_SIG_AREA 2021-12-25
TY Tees Yard (Ryhope) TD_LNE_NE_SIG_AREA 2021-02-07
UR Upminster "A" IECC TD_ANG_SIG_AREA 2020-09-27[1]
U2 Upminster "B" IECC TD_ANG_SIG_AREA 2020-09-27[1]
VT Thameslink South TD_SUSS_SIG_AREA 2015-03-15
WG West Anglia IECC (Liverpool Street IECC "D") TD_ANG_SIG_AREA 2019-03-09
WT Thameslink North TD_MC_EM_SIG_AREA 2015-03-15
X5 TBROC Sutton Area WestCAD 2022-12-25* (commissioned 2018-03-09*)
X6 TBROC Streatham Area WestCAD 2022-12-25* (commissioned 2016-05-03*)
XB Macclesfield TD_LNW_C_SIG_AREA 2022-08-27
XH Stafford No 4 TD_LNW_C_SIG_AREA 2015-09-01
XJ Stafford No 5 TD_LNW_C_SIG_AREA 2015-09-01
XP Manchester North ? 2015-04-07
XZ Liverpool Lime Street TD_LNW_C_SIG_AREA 2018-07-29
Y2 York IECC 2 (Leeds City) TD_LNE_NE_SIG_AREA 2018-12-25
Y3 York IECC 3 (Leeds North West) TD_LNE_NE_SIG_AREA 2018-12-25
YK York IECC TD_LNE_NE_SIG_AREA 2018-12-25
YZ YKROC Bowesfield Area WestCAD ? ? ? ? 2021-11-15
ZE Eastbourne TDC TD_SUSS_SIG_AREA 2019-11-29

Abbreviations

Code Meaning
ASC Area Signalling Centre
DTD Dual Train Describer
IECC Integrated Electronic Control Centre
ITD Information Train Describer
MCS Modular Control System
NCP Network Control Processor
PSB Power Signal Box
RCC Route Control Centre
ROC Rail Operating Centre
SB Signal Box
SCC Signalling Control Centre
TDC Train Describer Concentrator
BAROC Basingstoke ROC
CVLICC TAM Core Valley Lines Integrated Control Centre - Treherbert, Aberdare, and Merthyr
EMCC East Midlands Control Centre
EXROC Exeter ROC
MRROC Manchester ROC
ROROC Romford ROC
RYROC Rugby ROC
SWCC/WROC South Wales Control Centre/Wales ROC
TBROC Three Bridges ROC
TVSC Thames Valley Signalling Centre
TYROC Tyneside ROC
WMSC West Midlands Signalling Centre
WSSC West of Scotland Signalling Centre
YKROC York ROC


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  1. 1.0 1.1 1.2 1.3 1.4 1.5 On 2020-01-01 LS, UR, & U2 TDs were erroneously switched over to their new Q4, Q5, & Q6 identities, this was reverted on 2020-01-02.