Transportation Systems

Trainguard MT CBTCThe Moving Block Communications-Based Train Control Solution

2Thanks to advances in communication technologies, it has been possible to transfer more

intelligence to the train, thus giving birth to a new generation of train control systems, that of

Communications-Based Train Control (CBTC). Today, CBTC solutions are the responses to ever

increasing need for capacity and service frequency. Trainguard MT CBTC is now widely recognised

as the CBTC solution favoured by mass transit authorities.

As a company at the forefront of technology, Siemens

has installed a large number of:

Automatic train control systems for driver-

operated trains: CBTC, SACEM, LZB, PA 135

which already equip more than twenty urban

transportation networks throughout the world

especially in Athens, Berlin, Budapest, Caracas,

Delhi, Guangzhou, Hong-Kong, Lyons, Mexico

City, Paris, Prague, San Juan, Shenzhen, Vienna.

Driverless systems: VAL in cities including Lille,

Rennes, Taipei, Toulouse, and Turin, VAL for

airports at Paris Orly, Chicago O'Hare and soon

Paris Charles de Gaulle, and CBTC for heavy rail

metros in Lyons, Paris and soon in Barcelona and

Budapest.

Backed by its technological, industrial and nancial

strength and reinforced by international networks,

Siemens has obvious advantages which enable it

to clearly announce its ambition to strengthen its

position as the leader in the market for automatic

metro control systems, driverless applications and

interoperability.

Flagship product of Siemens, Trainguard MT CBTC was

born from more than twenty years of experience and

success with automatic train control and moving block

driverless systems.

For Busy Cities Trainguard MT CBTC: The efficient train

control based on radio communications

3 Enter the World of CBTC Siemens has the solution to the requirements of mass transit authorities

facing challenging issues of equipping new lines, resignalling lines in

operation with no disruption of passenger service, upgrading from

driver-attended train operations to fully automatic driverless systems.

Trainguard MT CBTC is the state-of-the-art and proven

Moving Block CBTC solution offering:

High level of safety thanks to continuous

speed supervision, full enforcement of

speed limits, exibility to dene temporary

speed limits, and proven fail-safe system

components.

Cost-effectiveness expressed in terms of high

availability, reliability, and maintainability.

Reduced life cycle cost (LCC) thanks to more

accurate train regulation, energy savings, and

less trackside equipment.

More exible train operations enabled by

smooth upgrade to a high level of system

performance up to driverless operations,

management of unequipped trains, and

adaptable interfaces with any existing systems in

case of refurbishment.

Reduced size of train-borne equipment for

easier integration into the rolling stock.

For passengers travelling daily on Trainguard MT CBTC

equipped lines, this means increased transportation

possibilities across the city, making these lines even

faster and more attractive by:

Enhancing safety by compliance with CENELEC

safety standards EN 50126, 50128, 50129.

Increasing service frequency through shorter head-

ways.

Reducing travel times through increased commer-

cial speed.

Improving punctuality through a highly available

and reliable CBTC system.

4 Making mass transit operations more efficient Trainguard MT CBTC:

The dedicated solution to worldwide operational

Already in revenue service in France on Lyons line

D (Maggaly) since 1992 and Paris line 14 (Meteor)

since 1998, both in driverless train operations.

In revenue service on New York City line L

(Canarsie line). It has also been chosen by BKV

(Budapest Transport Authority) for resignalling

line M2 for driver-attended train operations and

by RATP (Paris Transport Authority) for ves lines

of the Ouragan resignalling program.

Soon in revenue service on Barcelona line 9,

Spain, in driverless train operations.

Chosen by RATP to upgrade Paris line 1

during daily operation, the very rst line of its

network, from driver-attended to driverless train

operations.

Chosen by BKV to equip the new Budapest line

M4 with driverless automatic train control.

Upgrade to driverless operations. Trainguard

MT CBTC has been designed to accommodate

both driver-attended and driverless operations.

Its modularity guarantees the ability to plug in

additional modules and to implement functions

requested when upgrading to driverless solution,

without changing existing modules.

Interoperable and interchangeable solution.

Siemens is leading the interoperability program

carried out by New York City Transit, and is a

major player in the interchangeability program

launched by RATP.

Mixed eet operations. Trainguard MT CBTC

equipped trains and unequipped trains can both

operate safely on a CBTC-equipped line.

Reduced maintenance-demanding equipment

thanks to Airlink, the efcient and highly available

wireless track-to-train data communication

solution based on free- propagation.

5 For shorter headways performance More than twenty years of experience in

Moving Block Signalling

Trainguard MT CBTC offers the following benets:

Moving block signalling does not rely on

physical blocks and lineside signals.

On line D in Lyons, there are no track circuits on

most of the line except for interlocking areas

where the operator wanted to enable specic

fallback modes. The limited number of trackside

equipment allows lower maintenance costs and

better availability of the CBTC solution.

The size of the moving block separating two

trains takes into account their relative location

and their own performances. Therefore, the

separation distance is minimised as compared to

xed blocks. It leads to an optimum use of the

infrastructure by shortening headways.

System operation is more flexible, as the

reversal of trains is made possible at any point

allowing trafc split, shuttle operation between

stations and single track operations.

For optimum use of the train eet and to allow

transit of unequipped trains from other lines,

Trainguard MT CBTC supports mixed eet

operations.

To guarantee optimum performance during the

migration phase, Trainguard MT CBTC supports

mixed mode operation.

Optimum transport capacity means short headways for reduced waiting time in stations. This

implies the implementation of Moving Block Signalling, hence imposing continuous, high-capacity

and bi-directional track-to-train data communication. In 1992, Maggaly was the rst driverless

Moving Block CBTC for heavy metros. The driverless CBTC solution designed for Meteor, in service

since 1998, also supports mixed eet operations.

6 For a reliable standardised CBTC solution

New York City Transit runs one of the most extensive

and complex metro systems worldwide. It keeps

the city moving 24 hours a day, seven days a week.

In December 1999, Siemens was awarded the

leadership for interoperability which foreshadows

the standard for resignalling the whole metro

network.

RATP has undertaken a vast program, called Ouragan,

for the resignalling of 13 lines, most of them equipped

with Siemens PA 135. One of the key objectives of

Ouragan is to put in place a strategy for standardizing

CBTC technology and diversifying suppliers, based on

the concept of interchangeability.

Interchangeability is based on the breakdown

of the CBTC system into different shares and

the standardization of the interfaces between the

different shares. These shares include the wayside

CBTC system, the train-borne CBTC system, the

communication system between the wayside and

train-borne CBTC systems, along with their integration

to ensure their expected behaviour under operation.

RATP awarded Siemens three of the ve shares:

The data communication system, consisting

in the wayside network and the track-to-train

transmission system. All of the 5 lines will be

equipped with Airlink.

The train-borne CBTC system for lines 3, 10 and

12, i.e. equipment of 117 trains.

The wayside CBTC system for lines 5 and 9, i.e.

equipment of more than 70 km of track.

Siemens is actively involved in the European research

project (UGTMS, MODURBAN) and standardisation

committees both at American (IEEE 1474) and

international levels (IEC WG 39 and WG 40).

Driven by operational issues and by cost savings, transit authorities opt for multi-sourced

procurement strategies resulting in the design of standardised CBTC systems. Siemens is an

indisputable player in the design of standardised CBTC solutions. Today, ten metro lines either in

revenue service or under construction share the same CBTC standard, therefore enabling operators

to manage obsolescence.

7Key Sub-Systems

Train-borne CBTC sub-system, ensuring the

safety of train movement, train operation and

the safety of both passengers and ground staff.

It meets the requirements of conventional train

operations with driver and driverless operations.

Wayside CBTC sub-system, in charge of

train tracking and ensuring the safety of train

movement according to the Moving Block

principles.

Data communication sub-system, including

a bi-directional, high-capacity and continuous

track-to-train data transmission. Airlink is the free

propagation radio solution designed by Siemens.

Data communication based on inductive loops is

an alternative solution.

Optional Sub-Systems

Auxiliary wayside sub-system (AWS),

comprising signalling and interlocking.

In addition to its interlocking function, it

also controls lineside signals to protect the

movements of unequipped trains.

Automatic Train Supervision (ATS) sub-

system, providing facilities to supervise and

optimise train operations.

Passenger protection sub-systems such as

platform screen doors which prevent passengers

from falling onto the track, or other devices

based on optical technology. These systems

detect obstacles on the track and interact with

the train-borne and wayside systems to stop

trains at specic locations.

Traction power sub-system.

Audio-visual sub-systems, allowing full duplex

voice communications between operators

at the Operations Control Centre (OCC) and

passengers. Video cameras installed on board

trains and on platforms enable operators at the

OCC to monitor any incident.

Trainguard MT CBTC is designed to interface with

any of the above systems if existing. As part of a

complete solution, these systems can also be provided

by Siemens.

Taking up the challenge of time The proven and interoperable solution matching the evolution in performance

Any transit authority takes full advantage of Trainguard MT CBTC designed as an

interoperable/interchangeable solution even though its short-term primary concern

lies more in acquiring a state-of-the-art proven CBTC solution. Equipping a line with

Trainguard MT CBTC enables any transport authority to implement, in the middle-term future,

a multi-sourced procurement strategy when upgrading the system or extending the line.

8Airlink Mass transit authorities have chosen free-propagation radio

As the world leader in Communications-Based Train Control, Siemens pioneered the design of free-

propagation track-to-train data transmission to maximise the performance of its CBTC solution.

Trainguard MT CBTC is now in revenue service with free-propagation radio in harsh subway

environment.

The ideal solution for resignalling lines in operation

as well as equipping new lines, Airlink has made a

name for itself through its references in the market of

Moving Block CBTC.

Optimised for both attended and driverless train

operations, Airlink ensures mass transit authorities of:

Continuous and real-time data transmission

between xed and mobile equipment.

Very high quality of service, contributing to

the availability and reliability of automatic train

control systems.

Impossible intentional jamming and hacking.

Reduced maintenance costs as there is a

reduced number of radio equipment on the track.

Adaptation to resignalling lines in revenue

service. By overlaying existing communication

system, Airlink is installed easily with no impact

on operation.

Flexibility to t different operating environments.

Compliance with interoperability and inter-

changeability requirements. The interface

between radio and CBTC equipment complies

with IP 802.3 (IP protocol).

Compliance with existing telecommunication

regulations in the United States (FCC), Europe

(ETSI) and China (MII).

Resignalling lines in revenue service Cost-effective cut-over strategies to build up to full

CBTC operations

9 It is designed as an overlay solution.

It relies on a wireless radio communication

system. This makes the installation of equipment

dedicated to data transmission easier as there

is no continuous medium on the track and

equipment is mostly installed in stations.

It can be interfaced with signalling systems

provided by third parties like in Paris, New York

City, or Barcelona and with different types of

rolling stock.

It allows stepwise installation of the wayside

CBTC and radio equipment along the line.

It supports mixed eet operations. The trains

are removed from trafc one after the other and

gradually re-inserted when equipped with CBTC.

Therefore, trains newly equipped with CBTC run

together with non-equipped trains during the

migration phase.

It supports mixed mode operations. Indeed, it

enables driver-attended and driverless operating

modes on the same line.

Resignalling lines in revenue service Cost-effective cut-over strategies to build up to full

CBTC operations

In order to mitigate the impact on passenger service, migration strategies implemented in New York City,

Budapest and Paris take full advantage of Trainguard MT CBTC as:

For most transport authorities, interrupting passenger service during resignalling of the line is quite

unthinkable. Based on dedicated cut-over strategies, Trainguard MT CBTC guarantees a smooth

smooth migration from a conventional signalling system to full CBTC operations.

10

New York City - Canarsie line: NYCT awarded the

CBTC Joint Venture lead by Siemens the contract for

resignalling the line and equipping new trains with its

CBTC. The contract includes designing, furnishing and

installing CBTC equipment for mixed eet operations,

upgrading existing interlockings to be CBTC-ready and

providing six completely new CBTC-ready interlocking

systems. Trainguard MT CBTC equips fty steel-

wheeled trains, the 17 km long line and the yard. It is

in revenue service since January 2006.

Paris - Ouragan: The resignalling program currently

undertaken by RATP to upgrade to CBTC lines 3, 5, 9,

10 and 12 aims at:

Improving safety by ensuring continuous train speed control.

Improving the quality of the service offered to passengers by reducing the headways from 105 to 90 seconds.

Budapest - line M2: To upgrade line M2 to full CBTC

operation, BKV awarded Siemens the signalling

contract. Trainguard MT CBTC will equip a eet of 26

driver-operated trains running on the 12 km long line.

Algiers - line 1: To equip the rst line of its metro,

EMA (Algiers Transport Authority) has chosen

Trainguard MT CBTC. The CBTC system will equip a

eet of 14 driver-operated trains running on the 9 km

long line.

Experience in driver-attended CBTC operations For enhanced safety and optimum

train operations

With the integration of the state-of-the art free-propagation data communication product designed

by Siemens, Trainguard MT CBTC is the most advanced CBTC solution which guarantees efciency

and safety of driver-attended operations, while reducing life cycle costs.

11

Lyons - line D: The rst driverless application of the

Moving Block CBTC. Since 1992, the CBTC system is in

service on line D (Maggaly) in Lyons, France. It equips

14 km of line and all of the 36 two-car train sets.

Paris - line 14: The second driverless application of

Moving Block CBTC. Since 1998, it is in service on

line 14 (Meteor). The CBTC system equips 8 km of

line and 19 six-car train sets. It supports mixed eet

operations and interfaces with platform screen doors.

In December 2003, the line was extended to Saint

Lazare railway station. The extension was performed

without operational disturbance to revenue service.

The line is being extended to Olympiades station in

the South of Paris.

Barcelona - line 9: The future backbone of Barcelonas

metro network. Trainguard MT CBTC will equip 50

steel-wheeled trains running on 44 km of line.

Paris - line 1: The oldest and one of the busiest

subway lines of Paris metro. The existing PA BF

(speed-code type automatic train control) is currently

being upgraded to a driverless CBTC system.

Resignalling is being carried out during revenue

service without interrupting passenger service. To

maintain headway performance even during the

cut-over phase, both trains supervised by PA BF and

driverless CBTC trains will run simultaneously on the

line.

Budapest - line M4: Trainguard MT CBTC will become

the brain of the new driverless line. It will equip 15

steel-wheeled trains running on 8 km of line at a

minimal headway of 90 seconds.

Experience in driverless CBTC operations A solution in revenue service which

has demonstrated high availaility

Trainguard MT CBTC in its driverless version - with no staff on-board - was born from more than 20

years of success with driverless metro systems. Experience started in 1983 in Lille with the VAL, the

turnkey driverless solution. Orly Airport followed (in 1991) and Chicago O'Hare airport (in 1992)

where the system is in operation 24 hours a day, 7 days a week. Since then, VAL is the kernel of the

transport systems in Toulouse, Rennes, Taipei, Turin and Roissy-Charles de Gaulle airport.

www.siemens.fr/transportation

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