Croydon Tramlink - The Unofficial Site

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©1999-2007
S.J. Parascandolo

Tramlink Glossary and Signs

This section is intended to cover all the various codes and abbreviations related to Tramlink and to explain the meaning of lineside signs. If you spot something which is not defined here, Email me!

Location Codes

All Tramlink locations have a 3 letter code. These are used for Signal and Point identifications, Signalling Equipment Cases and tram stops. All known ones are shown here. All of these locations have EM4 Equipment cases (see below).

Wimbledon Line		Town Centre
WMB DDR MPK MRD PBR BGW MIS MTM MTJ BDL DEW TPL AMP WDM WPK RVC	Wimbledon Dundonald Road Merton Park Morden Road Phipps Bridge Belgrave Walk Mitcham Interlaced Section Mitcham Mitcham Junction Beddington Lane Depot Exit West Therapia Lane Ampere Way Waddon Marsh Wandle Park Reeves Corner	SNJ SAN CHR LEB COR ECR CTO GST CST RVC TWR WCR WRI WLR	Sandilands Junction Sandilands Chepstow Road Lebanon Road Cherry Orchard Road East Croydon Croydon Tramlink Office George Street Church Street Reeves Corner Centrale (Tamworth Road) West Croydon Wellesley Road Island Wellesley Road

Beckenham Line		Addington Line
SNJ ADS BHL WDS ARN ELM HRD BKB AVR BCR BCJ	Sandilands Junction Addiscombe Blackhorse Lane Woodside Arena Elmers End Harrington Road Birkbeck Avenue Road Beckenham Road Beckenham Junction	SNJ LPK OAK CLN SHH GVH KGE ADV FLW KHR KHD NAD	Sandilands Junction Lloyd Park Oaks Road Coombe Lane Shirley Hills Road / Heathfield Gravel Hill Kent Gate Way Addington Village Fieldway King Henry's Drive Roundabout King Henry's Drive New Addington

NB. Some EM4 cases are split in 2, e.g. West Croydon has EM4-WCR-1 and EM4-WCR-2. Wellesley Road and George Street are also split. EM4-CTO is only a half sized case.

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Power Supply

AC
DC
DCF
DCR
HV
RMU

Alternating current
Direct current
Direct current feeder breaker
Direct current rectifier breaker
High voltage
Ring main unit

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Infrastructure

4ft
6ft
C&P

CCTV
Cess
EM3

EM4

ESR
Gauge
OFR
OHL
OLE
PHP
PID
PPI
PSR
SCADA
SI
TCSU
TMS
TSD
TSR
TVM

Area between running rails
Area between two tracks
Clipped and Padlocked (Usually referring to points
such the Cripple Siding Points)
Closed circuit television
Beyond the limits of the outer rail, 8ft on Tramlink (10ft on Railtrack)
Electromechanical 3 - These are the Smaller, square shaped equipment cases
at each stop that provide the low voltage power supply to local equipment.
Electromechanical 4 - These are the larger cases which house the signalling,
CCTV, Ticket Machine, PID and other controls and link them to the Tramlink
Data bus.
Emergency speed restriction
Distance between running rails (4ft 8 1/2 inches or 1435mm)
Off Air Repeater / On Frequency Repeater (see Radio System)
Overhead Line
Overhead line equipment
Passenger help points
Passenger information display
Points position indicator
Permanent speed restriction
Supervisory control and data acquisition
Section insulator / isolator
Traffic control signals unit (now TfL Signals)
Tram management system
Touch Screen Dispatcher (see Radio System)
Temporary speed restriction
Ticket vending machine

See Signs for Speed Limit Signs

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Personnel

Hi-Vi(s)
HV
MD
PICOP
PICOT
PICOW
PPE

PTS
PTW
RPI
SAM

TPS
TWS

High Visibility
High Visibility
Managing Director
Person in charge of possession
Person in charge of testing
Person in charge of works
Personnel protection equipment. PPE is basically the term for the hard hats, steel toecap boots and the Hi-Vi clothing required to be worn trackside.
Personal Track Safety - All operational staff must undertake this training.
Permit to work
Revenue Protection Inspector
System activation manager - Although the controllers can switch sections on
and off in an emergency etc., the SAM would isolate sections of overheads at
the trackside cabinets for example so that work can be carried out on them and
when the work is complete, he checks that the whole section is clear of
equipment and personnel and is safe to energise. He then switches the isolators
in the trackside cabinet on, phones the controller to activate the section and
then satisfies himself that everything is OK.
Tramlink possession supervisor
Tramlink worksite supervisor

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In Service

EB
ETA
ETD
kph
LRV
m
mm
mph
R
RTA
RTS
RV
SLW
SPAS
WB

Eastbound
Estimated time of arrival
Estimated time of departure
Kilometres per hour
Light rail vehicle
Metres
Millimetres
Miles per hour
RTS activated signal (in Yellow Circle on Signal Head)
Road traffic accident
Ready to start
Rendezvous point (Agreed meeting point with Emergency Services)
Single Line Working
Signal passed at stop
Westbound

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Organisations

ASLEF
BTP
CJV
DETR
EC
EU
FTO
GLA
HMRI
HSC
HSE
ISS
LBB
LBC
LBM
LBS
LT
LTB
RBS
RI
TCL
TDI
TfL
TGWU
TOL

Associated Society of Locomotive Engineers and Firemen
British Transport Police
Construction Joint Venture
Department of Environment, Transport and the Regions
European Community
European Union
First Tram Operations
Greater London Authority/Assembly
Her Majesty's Railway Inspectorate
Heath and Safety Commission
Health and Safety Executive
ISS Transport Services - Tram and Tramstop Cleaning Contractors
London Borough of Bromley
London Borough of Croydon
London Borough of Merton
London Borough of Sutton
London Transport (now TfL)
London Transport Buses (now TfL Buses)
Royal Bank of Scotland
Railway Inspectorate
Tramtrack Croydon Limited
TDI Media (formerly LT Advertising) control all Advertising on trams and stops.
Transport for London
Transport and General Workers Union
Tram Operations Limited

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Law

CTA
DDA
TWA

Croydon Tramlink Act (1994)
Disability Discrimination Act (1998)
Transport and Works Act

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Trams

BWS

CR-4000
IBIS

IR
K-4000

TBC
VECOM

Bombardier Wien Schienenfahrzeuge AG ("Bombardier Vienna Rail Vehicles
plc"), a subsidiary of Bombardier Eurorail, the tram manufacturers.
Model of Tram Used in Croydon
Integriertes Bord-Informationssytem - Integrated On Board Information system.
This is the system that controls the announcements and destination blinds as
well as logging all faults on the trams.
Infra-Red - IR Beams are used to check the doors are clear.
Similar tram in widespread use in Cologne, Germany, on which the Croydon
ones are based.
Traction brake controller.
Vehicle Computer. Effectively, this is not part of the tram, but an extension of
the SCADA system to control and pick up data from the tram in service and
once set up with the duty and drivers I/D and duty. It feeds back and receives
data through the transponder loops to give the driver and controller an accurate
picture of the trams 'in service' performance.

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Lineside Signs

Permanent Speed Limit (kph).

Either Temporary Speed Limit (kph).
or
Reverse Direction Speed Limit (kph) for example on Crossovers.

The arrow (also used with black signs) indicates the speed only applies in the
pointed direction at the junction ahead.

Warning.

(Red C in Diamond)

Coast (Don't take Power).

Termination (of Speed Restriction).

(Horizontal black band over diamond)

Stop - Usually used to protect worksites.

Give Way (only used at New Addington).

Call Attention signs are located at the last safe braking point to the indicated hazard, against the PSR in force.
The plate below gives information to the driver: -

JCN	Road Junction in Off-Street areas.
Reversing Point	Stopping Point to Reverse over emergency crossover or from a single track section.
RTS and Await Proceed	Exactly as it says. Used at Elmers End where the signal is not level with the front of the tram.
Wait here if Stop Occupied	Used at Dundonald Road outbound and Wellesley Road to prevent a tram from blocking roads whilst waiting to enter a stop or holding the lights on the tram phase unnecessarily.

Section Isolator / Insulator on the OHL.

Fouling Point (In Stabling Yard).

The Yellow Back plate designates the signal as being Point Dependent. It will
only give a Proceed if there is not a conflicting move AND the points are correctly detected.

Track Data Sticker on OHLE Mast showing Nearest Rails and Cant.

Rail Height Indicator used on off-street platforms to indicate correct rail height.

Danger - Live Rails - Used to Warn of the 750vdc Third Rail adjacent to Tramlink
at Wimbledon and on the Beckenham Line.

No Pedestrians.

Trams Only! (For crazy reasons, you are not allowed No Entry signs with "Except Trams" under them)

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OHL Reference Plates

Each overhead mast has a reference plate on it and this refers to the sub stations and the Distance from the Tramlink zero Point which is 25 m West of the Centre of East Croydon stop.

Except for in the Depot, plates are of the form: -

AAX
NN
nnny

where A is a required Letter, X is an optional Letter, N and n are required numbers and y is an optional letter.

Example: Near Beckenham Junction:
Love Lane - Blakeney Road sub stations, 7 km 784 m from the zero point.

The Top Row is the reference to nearby sub stations. The Centre is the number of km from the zero point. The bottom is the number of metres from that km point followed in some cases by an A or B. These are used if two masts are at the same distance, perhaps with a span wire between the two.

The masts in the Depot use a different format (see below).

The only other exception the town centre where mileages are worked out separately for each side of the loop until they reach one pole at Reeves Corner. Continuing towards Wimbledon, the Church St route mileages are continued.

Odd One Out: The distance in brackets refers to the North side of the loop.

All the sub station references are defined below: -

AP
OAP
OA
SOA
SO
ESO
ESX
ES
ECS
EC
ECJ
EJ
EJN
EJS
EJT
JT
JTDE
DE
DS
DX
DWTM
JTM
TM
TMB
MB
MBD
BD
BDX

Addington Village - Parkway (New Addington)
SI Mast (south of crossover reversing point)
Oaks Road - Addington Village
SI Mast (between sub station and crossing)
Sandilands Junction - Oaks Road
SI Mast (just north of the tunnels)
Some masts at Sandilands Junction
East Croydon - Sandilands Junction
SI Mast (by the Post Office)
East Croydon (Dingwall Road - Post Office)
SI Mast (just east of Dingwall road)
East Croydon - Jubilee Bridge (only used in George St East and Cairo New Road)
East Croydon - Jubilee Bridge North side (Barclays-Reeves Corner via West Croydon) *
East Croydon - Jubilee Bridge South side (Barclays - Reeves Corner via Church St) *
SI Mast (by Reeves Corner Stop)
Jubilee Bridge - Therapia Lane
SI Mast (at Depot East Gate on Depot line)
Depot (see below)
Depot (see below)
Depot (see below)
SI Mast (at Depot West Gate on Depot Line)
SI Mast (between Depot East and the Staff Halt)
Therapia Lane - Mitcham Junction
SI Mast (next to west foot crossing at Mitcham Junction)
Mitcham Junction - Belgrave Walk
SI Mast (just east of Belgrave Walk)
Belgrave Walk - Dundonald Road (just west of Cripple Siding Point)
All poles Wimbledon side of SI near the Cripple Siding Point)

ESW
SW
SWL
WL
WLX
WLB
LB

SI Mast (just south of Ashburton Road Bridge)
Sandilands Junction - Woodside
SI Mast (just south of Woodside Station Building)
Woodside - Love Lane (Harrington Road) also towards Elmers End
Elmers End Single Line and Cripple siding from SI just north of the end of double track.
SI Mast (just south of Love Lane curve)
Love Lane - Blakeney Road (including Beckenham Junction)

* Smaller OHLE Reference plates still exist for fixings to buildings. They are mounted a few feet below the fixing on the side of the buildings.

Depot OHL Mast References
Masts in the Depot are referenced differently: -

DE 01 to DE 24 - These basically serve the east apron area, washroad and the points ladder to the stabling bays.

DX 25 to DX 48 - These serve the stabling yard bays and the tracks to the west end of the Workshop.

DS 51 to DS 62 - These are supports within the Workshop (built into the depot structure).

There are also A and B suffixes to some masts.

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