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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
Siemens Transportation Systems150 av. de la Rpublique - BP 101F-92323 Chtillon cedex FrancePhone: (+33) 1 49 65 70 00Fax: (+33) 1 49 65 70 93E-mail: [email protected]
Siemens AG Transportation SystemsRail AutomationP.O. Box 3327 D-38023 Braunschweig GermanyPhone: (+49) 531 226 2888Fax: (+49) 531 226 4888