List of Train Describers

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	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