List of Train Describers

The following list of TD areas was last updated on 13th July 2017.

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
• Commissioning - the date the train describer was commissioned or when it is expected (day/month/year).
• Abolished - the date the train describer was abolished or when it is expected (day/month/year).

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

ID	Name	Topic	SIG	RTE	TRS	TRK	PTS	LXG	Commissioning	Abolished
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	TBD	Y	Y					7/11/2016
BL	Bristol PSB	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	TBD	?	?	?	?	?	?	Planned 12/2018
C5	WROC North Wales Coast	TBD	?	?	?	?	?	?	Planned 03/2018
C6	WROC Port Talbot West	TBD	?	?	?	?	?	?	Planned 03/2018
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	TD_WWM_SIG_AREA								30/12/2015
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 PSB	TD_LNW_C_SIG_AREA
CT	Channel Tunnel	TD_KENT_MCC_SIG_AREA	Y
CV	WMCC Cherwell Valley WestCAD	TD_LNW_WMC_SIG_AREA	Y	Y					8/8/2016
CY	WMCC Coventry	TD_LNW_WMC_SIG_AREA	Y	Y	Y
D0	TBD	TBD	?	?	?	?	?	?	Planned 12/2019
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	?	?	?	?	?	?	Planned 2/4/2018
D9	TVSC Stoke Gifford IECC	TD_WTV_SIG_AREA	Y	Y		Y			30/8/2016
DA	TVSC Bath IECC	TBD	?	?	?	?	?	?	Planned 2/4/2018
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	TBD	Y	Y		Y			18/4/2017
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 16/10/2017
K2	Kings Cross (Hertford Loop)	TD_LNE_GN_SIG_AREA	Y	Y			Y
KG	Kettering Area WestCAD	?	?	?	?	?	?	?	Planned 2018
KN	WMCC Kings Norton WestCAD	TBD	Y	Y					7/11/2016
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								7/8/2016
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	TBD	?	?	?	?	?	?	Planned 10/2017
M5	TBD	TBD	?	?	?	?	?	?	Planned 10/2017
M6	TBD	TBD	?	?	?	?	?	?	Planned 12/2018
M7	TBD	TBD	?	?	?	?	?	?	Planned 12/2018
M8	TBD	TBD	?	?	?	?	?	?	Planned 12/2018
M9	MRROC Blackpool Area WestCAD	TBD	?	?	?	?	?	?	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 WestCAD	TD_MC_EM_SIG_AREA	Y	Y	Y
NJ	Neasden Jn TD	TBD	?	?	?	?	?	?	2016
NK	North Kent	TD_KENT_MCC_SIG_AREA	Y	Y	Y	Y	Y
NM	EMSC Nottingham WestCAD	TD_MC_EM_SIG_AREA	Y	Y	Y
NT	Newport PSB	TD_WWM_SIG_AREA								29/10/2012
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
PJ	WMCC Proof House Jn WestCAD	TBD	?	?	?	?	?	?	Planned 2/1/2018
PT	Port Talbot	TD_WWM_SIG_AREA
PX	Preston	TD_LNW_LC_SIG_AREA
Q1	Romford ROC Stratford B IECC	TBD	Y	Y	Y				6/11/2016
Q2	Romford ROC Shenfield C IECC	TBD	Y	Y	Y	?	?	?	26/2/2017
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	RYROC Stafford Area WestCAD	TBD	Y	Y					1/9/2015
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								7/11/2016
SC	Scunthorpe	TD_LNE_GN_SIG_AREA
SD	Sheffield	TD_LNE_GN_SIG_AREA								2/5/2016
SE	Shenfield IECC	TD_ANG_SIG_AREA	Y	Y	Y					26/2/2017
SH	Slough A	TD_WTV_SIG_AREA		Y						7/4/2015
SI	Stratford IECC	TD_ANG_SIG_AREA	Y	Y	Y					6/11/2016
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	TD_WWC_SIG_AREA								21/2/2016
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
SV	WMCC Stour Valley WestCAD	TBD	?	?	?	?	?	?	Planned 2/1/2018
SX	Saxmundham	TBD	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 ITD	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	TD_SUSS_SIG_AREA	Y	Y	Y					15/3/2015
W2	Woking (Farnham)	TD_WESS_SIG_AREA	Y	Y	Y
WA	Warrington PSB	TD_LNW_C_SIG_AREA	Y	Y
WC	Wembley C Sidings								7/6/2015
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	TBD	Y	Y	Y
WN	WMCC Water Orton	TD_LNW_WMC_SIG_AREA	Y	Y
WO	WMCC Wolverhampton WestCAD	TD_LNW_WMC_SIG_AREA	Y	Y
WS	Willesden Suburban	TD_WCS_SIG_AREA
WT	Thameslink North	TD_MC_EM_SIG_AREA	Y	Y	Y					15/3/2015
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			15/3/2015
X1	TBROC London Bridge Central WestCAD	TD_SUSS_SIG_AREA	Y	Y	Y	Y			5/1/2015
X2	TBROC Charing Cross	TBD	Y	Y	Y	Y			4/1/2016
X3	TBROC Cannon Street WestCAD	TBD	Y	Y	Y	Y			30/8/2016
X6	TBROC Streatham WestCAD	TBD	Y	Y		Y			3/5/2016
X7	TBROC Sutton-Wimbledon WestCAD	TBD							Planned 2/4/2018
XB	Macclesfield	TD_LNW_C_SIG_AREA
XE	Warrington Central	TD_LNW_C_SIG_AREA
XH	Stafford No 4	TD_LNW_C_SIG_AREA								1/9/2015
XJ	Stafford No 5	TD_LNW_C_SIG_AREA								1/9/2015
XL	Hunts Cross	TD_LNW_C_SIG_AREA
XP	Manchester North									7/4/2015
XZ	Liverpool Lime Street	TD_LNW_C_SIG_AREA
Y0	YKROC North Lincs WestCAD	TBD	Y	Y	Y	Y			30/12/2015
Y1	TBD	TBD	?	?	?	?	?	?	Planned 2019-2022
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	TBD	Y	Y	Y	Y			2/5/2016
Y5	YKROC Brough	TBD	?	?	?	?	?	?	Planned 3/2018
Y6	YKROC Huddersfield WestCAD	TBD	?	?	?	?	?	?	Planned 10/2018
Y7	YKROC Hartlepool	TBD	?	?	?	?	?	?	Planned 2019
Y8	YKROC Kings Cross	TBD	?	?	?	?	?	?	Planned 2020
Y9	TBD	TBD	?	?	?	?	?	?	Planned 2022
YA	YKROC Halifax	TBD	?	?	?	?	?	?	Planned 10/2018
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