Train Interior Passengers

CITYFLO

Solving the capacity challenge

Bombardier's pioneering advances in communications-based train control (CBTC) systems are supporting system optimization and upgrades globally providing a new dimension in overlay capability and tackling the capacity challenge. These systems can be deployed quickly, allowing some of the world’s largest cities to meet their transportation needs – rapidly and reliably.

CBTC benefits include:

  • Integrated system based on state-of-the-art CBTC with bi-directional radio communication
  • Improved transport capacity to optimize use of the infrastructure: track and trains
  • Enhanced system supervision and control from centralized automatic train control (ATC) location, thanks to bi-directional communication capabilities and integrated data network
  • Reduced lifecycle and maintenance costs, including the result of less wayside equipment being required
#Anchor : CBTC

Bombardier CBTC technology

Bombardier Transportation has introduced CBTC as part of its CITYFLO 450 and 650 signalling solutions for conventional metros, as well as for its automated people mover (APM), advanced rapid transit (ART) and monorail systems. CITYFLO 450 is our mature, cost-effective solution while CITYFLO 650 is our full-feature, cutting-edge solution designed for the railways of the future.

No passenger disruption

One of the major challenges faced by mass transit operators today is that of upgrading systems to increase capacity and reduce headways on existing lines while maintaining existing services for their customers. For most transport authorities, disrupting passenger services to re-signal a line is not a viable option. Capacity demands coupled with continued advances in computer technology and the implementation of new standards while desirable for system safety and modernization, are accelerating obsolescence which further drives the need for upgrades.

Reduced lifecycle costs

By creating a continuous bi-directional communications link between wayside and onboard equipment, CBTC provides many advantages. There is no need for any physical vehicle detection system such as track circuits or axle counters which reduces the overall wayside equipment required and eliminates additional maintenance costs. In addition, the unique features of Bombardier's CBTC solution means it can be used as an overlay system which results in no disruption to passenger services during migration and upgrades.

Increased capacity and improved safety

Since the early 1990s, Bombardier Transportation has been at the forefront of advances in CBTC. Bombardier's CBTC solutions use a moving block (CITYFLO 650) or virtual block (CITYFLO 450) operation that allows trains to run closer to each other compared to a fixed block system and reduces the headway between vehicles while increasing safety.

Seamless operation

Bombardier’s CBTC system can operate in driver, driverless or completely unattended modes. The system can be upgraded from driver to driverless mode, should requirements change. Its state-of-the-art features include:

  • Safety-verified automatic train control design certified to SIL4
  • Proven typical availability of 99.98 per cent or higher
  • Fully redundant architecture ensuring high system availability
  • Hot standby switchover capability across all sub-systems ensuring minimum service disruption
  • Scalable architecture
  • Easy migration from a driver (GoA 2) to a driverless (GoA 3 and 4) system
  • Robust interference-immune radio solution, enabling high service availability

Advanced vehicle supervision

The CBTC system architecture includes EBI Screen automatic train supervision (ATS) which offers the following features:

  • Centralized traffic control (CTC) for the efficient monitoring and control of rail traffic
  • Integrated human-machine interface (IHMI)
  • Train identifier system and routing automation
  • Timetable management
  • Optimized automatic train regulation (ATR)
  • Authority management
  • Maintenance and diagnostic functions including playback functionality
  • Power system interface, control and supervision
  • Publishing schedule information to a third-party system
CBTC Control room

Benefits of Bombardier CBTC solutions

  • An integrated system based on state-of-the-art CBTC with bi-directional radio communication
  • Improved transport capacity to optimize use of infrastructure: track and trains
  • Ensuring maximum system availability thanks to systematic introduction of redundancy features
  • Optimized train operation improving regularity and achieving energy savings through automatic driving functions
  • Enhanced system supervision and control from centralized automatic train control (ATC) location thanks to bi-directional communication capabilities and integrated data network
  • Providing a transparent migration path from the legacy system to the new system functionality, if required
  • Cost-effective to install; minimizes wayside equipment due to simple, reliable, contactless train-to-wayside communications systems
  • Reduced lifecycle and maintenance costs, including the result of less wayside equipment being required

CITYFLO CBTC solutions

Bombardier has implemented CBTC as part of its CITYFLO 450 and 650 signalling solutions for both conventional metros and its automated people mover (APM), advanced rapid transit (ART) and monorail systems.

CITYFLO 650

Bombardier Transportation’s CITYFLO 650 solution is a computer-based radio-controlled moving block automatic train control (ATC) system that does not require physical train detection devices or an onboard operator. Since train-to-wayside communication is provided via two-way radio, the exact position of the trains is known at every moment. In addition, the CITYFLO 650 solution can be used as an overlay radio-based train control system to upgrade existing fixed block systems.

CITYFLO 450

Bombardier’s CITYFLO 450 system is a communication-based train control (CBTC) virtual block system designed for metros with drivers. The system is used for virtual block semi-automatic running of trains (STO) on segregated tracks and has the potential for upgrading to a driverless system.

Wealth of experience

Bombardier is a market leader in CBTC technology with our moving block CITYFLO 650 solution in delivery or in operation on 40 lines globally, from automated people movers to fully automated, high-capacity lines.

  • The CITYFLO 650 system was the first ever radio-based, moving block CBTC system installed at San Francisco Airport in February 2003.
  • The upgrade of Metro Madrid’s busy Lines 1 and 6, with Bombardier’s CITYFLO 650 CBTC solution installed as an overlay solution without interruption to services, resulted in a more than 30 per cent increase in capacity.
  • Ongoing landmark projects include the fully automated Klang Valley Mass Rapid Transit Lines 1 and 2 in Malaysia; the first driverless, unattended metro lines in Istanbul and Delhi; Melbourne’s first high-capacity signalling system; and monorail projects in Bangkok.
#Anchor : Wayside

Wayside components

All the elements that make up the wayside signalling infrastructure play a vital role in system optimization and passenger safety.

Radio block centre

The EBI Com radio block centre (RBC) continuously receives train positioning data via radio signal, processes it and sends it to a track plan system which clearly shows the exact position of each train.

Train to track communication

The system communication network provides a private, secure and redundant communications path between the wayside and the onboard ATC equipment. The transmission of this data is made possible by the use of both the fibre-optic transmission system and the radio equipment. EBI Link ATC wayside equipment utilizes passive tags containing location data. EBI Link tags are used for the re-normalisation of the train’s accumulated position error.

Discreet and safe point machines

Bombardier Transportation has a full range of EBI Switch point machines, some of which can be positioned within sleepers or the recesses of the rails providing an undetectable finish at street level. EBI Switch point machines are designed to provide increased availability on the rail network and cost-effective maintenance of the complete turnout.

Flexible control

The CITYFLO 450 CBTC solution includes the EBI Lock computer-based interlocking (CBI). The interlocking systems receive route-setting commands from the traffic management centre and then, safely lock the route ahead of the train, releasing it after the train passes. The EBI Lock supervises and controls wayside objects such as signals, point machines, balises and level crossing protection.

CBTC Onboard Metro Madrid

Higher speeds and shorter headways

The EBI Cab onboard ATC system increases traffic capacity and safety allowing for higher speeds and shorter headways between trains as well as providing higher availability. The EBI Cab onboard ATP ensures that the train does not exceed permitted rail speeds. The train speed is constantly monitored by the system and if necessary, the EBI Cab system automatically initiates braking to keep the train at a safe speed.

Energy-saving driver assistance

The EBI Cab onboard ATC equipment includes the functionality to assist train drivers during a journey by optimizing their driving style with a view to conserving energy. With this system, it is possible to make automatic recommendations to the driver concerning velocity and acceleration or deceleration in order to minimize the energy required to run a train according to its allotted timetable. EBI Cab systems may not only generate savings in energy consumption, but also ensure that trains arrive on time.

CBTC CITYFLO 650 Control room

Diagnostics, engineering and maintenance

Engineering and preventative maintenance servicing for CITYFLO solutions can be planned efficiently and in advance with EBI Tool Design and Maintenance which automatically provides a maintenance schedule for wayside equipment. EBI Tool is also ideal for reconfiguring existing interlocking systems when the system is upgraded or extended.

Bombardier Transportation’s diagnostics and monitoring equipment is designed to detect inconsistencies in performance, driver behaviour, dwell time at stations or any operational anomalies which might contribute to service delays. Our diagnostics systems can also help to identify unexpected occurrences such as door failures or overshoots at stations that will highlight potential maintenance issues. This technical data insight provides the solution with predictive maintenance capabilities.

Traffic management

The EBI Screen control room is a visual display traffic-monitoring system for the efficient and economic management of mass transit networks that gives the operator total management of the traffic, including playback functionality.

#Anchor : Cityflo 650

CITYFLO 650 – CBTC for driverless automated transit systems

The CITYFLO 650 system for driverless (DTO) or unattended (UTO) train operations is designed for moving block advanced metro operations and automated people movers (APM). Track-to-train communication is achieved via state-of-the-art wireless technology to provide bi-directional communication. The system is used for automatic running of trains on segregated tracks. With its pioneering advances in communications-based train control (CBTC) solutions, Bombardier supports system optimization and upgrade, provides a new dimension in overlay capability and tackles the capacity challenge. The CITYFLO 650 system is operational or in delivery on 40 lines worldwide.

Increased safety

The CITYFLO 650 system permits shorter, more consistent headways due to its simple, reliable contactless TWC systems. It also meets the following industry standards: designed and certified to CENELEC-specific, non-IEC electrical standards: EN 50121, EN 50155, EN 50128 and other relevant EN standards; and is compliant with IEEE 1474 CBTC standards.

Higher levels of automation

The ATO system fully exploits potential capacity as the train travels at a safe distance from other trains. It reduces energy consumption and wear on track and vehicles. The ATO system provides precision stopping at platforms, automatic door operation and automatic turnback at terminals.

Flexible design

The CITYFLO 650 system’s driverless moving block technology provides flexible headways as standard with the capability to change headways dynamically. System updates can be easily managed and safely distributed remotely to trains anywhere in the CBTC network which is critical for the update of large fleets. The solution offers tailored after-sales support and training. Modifications such as system expansion or track alterations are easily incorporated.

Cost-effective system

The CITYFLO 650 solution is cost-effective to install and eliminates wayside equipment due to its simple and reliable contactless TWC systems.

Bombardier CITYFLO 650 Sao Paulo

CITYFLO 650 key features

  • Communications-based train control (CBTC) APM/metro moving block system
  • Driving supported by ATP EBI Cab vehicle automatic train protection (VATP)/vehicle automatic train operation (VATO) (DTO/UTO level)
  • Automatic train protection (ATP) information through spread-spectrum radio
  • Automatic train operation (ATO) functionality with continuous driving strategy modification
  • Segregated track
  • Train detection by radio transmission of train position
  • Continuous train supervision through EBI Screen control room
  • EBI Lock integrated interlocking function or EBI Lock computer-based interlockings
  • Point machines controlled by interlockings
  • Optional SCADA functionality can be added to the EBI Screen control room.
  • The EBI Screen control room can connect to auxiliary systems.
  • The CITYFLO 650 solution allows for integration of auxiliary systems such as passenger information displays (PIDs), CCTV, public announcement (PA) systems, radio and telecoms.

CITYFLO 650 sub-systems

EBI Screen control room

The vehicle is supervised by the EBI Screen control room system. This is a modern computer-based control and supervision system allowing the operator to give commands through a mouse or keyboard with the facility to have the position of the vehicles and optional wayside objects shown on both normal display screens and large rear projection screens. The EBI Screen control room also provides train regulation for the system.

EBI Lock computer-based interlocking

The CITYFLO 650 solution can either use the built-in interlocking function or add optional EBI Lock computer-based interlockings for fall-back system capability or adherence to local norms. The CITYFLO 650 built-in interlocking function is located with the regional wayside ATP.

EBI Com radio block centre

The CITYFLO 650 solution’s wayside equipment is divided in geographical regions. Each region has duplicated ATP and ATO equipment that handle the ATP and ATO functions for the trains in that region. Each region has one or more spread-spectrum radio to receive the transmissions of the position from the trains and to send them movement authorities.

EBI Link ATC wayside equipment

The information needed from the track for the normalization of position errors is passed to the train through norming point balises located in the middle of the track at certain points. These balises give an exact position to the train as it passes and allows the train to normalize its position, reducing the position error.

EBI Switch point machines

A normal railway point machine from the EBI Switch point machine range can be used, depending on what is most suitable for the particular market.

EBI Cab onboard equipment

The onboard equipment consists of the EBI Cab VATP and VATO which is an onboard system allowing a modern ATP system with continuous supervision and continuous update of this information through transmissions from the radio. The moving block ATP system has an American safety certification for public transport. A CENELEC approval of the system is also expected.

ATO system

The CITYFLO 650 solution has an ATO system that allows fully automatic DTO/UTO with continuous change of driving strategies which can be selected automatically through the EBI Screen control room at any time during the journey. The ATO system allows precision stopping by the train at stations with a typical accuracy of +/- 15 cm.

#Anchor : CITYFLO 450

CITYFLO 450 – CBTC for metros with drivers

The CITYFLO 450 solution is a communication-based train control (CBTC) virtual block system designed for metros with drivers. The system is used for virtual block semi-automatic running of trains (STO) on segregated tracks and has the potential for upgrading to a driverless system.

Simple and effective

Inexpensive to install, the CITYFLO 450 solution eliminates wayside equipment due to its simple, reliable, contactless train-to-wayside communications system, permitting shorter, more consistent headways. The CITYFLO 450 system is based on the successful CITYFLO 350 platform. The EBI Cab onboard ATP ensures that the train does not exceed the permitted speeds or pass beyond the end of a movement authority.

Low lifecycle cost

The EBI Drive semi-automatic train operation (ATO) system which is part of the EBI Cab onboard equipment, fully optimizes the capacity of the system as the train proceeds along the line at a safe distance from other trains. The ATO ensures smooth braking and acceleration resulting in energy savings and less wear and tear. It also provides precision stopping at platforms with high accuracy and automatic door operation. In semi-automatic mode, an operator may initiate station departures and close doors. The CITYFLO 450 system uses the EBI Screen control room to give the metro operator total overview and control of the traffic.

Seamless upgrade

Since train-to-wayside communication (TWC) is provided via two-way radio, the CITYFLO 450 system can be used as an overlay radio-based train control system to upgrade existing fixed block systems.

Bombardier CITYFLO 450 Skytrain Bangkok

CITYFLO 450 key features

  • CBTC metro virtual block system
  • Driving supported by EBI Cab vehicle automatic train protection (VATP)/vehicle automatic train operation (VATO) (STO level)
  • Automatic train protection (ATP) information through spread-spectrum radio
  • Automatic train operation (ATO) functionality with continuous driving strategy modification
  • Segregated track
  • Train detection by radio transmission of train positions
  • Continuous train supervision through EBI Screen control room
  • EBI Lock integrated interlocking function or EBI Lock computer-based interlockings
  • Point machines controlled by interlockings
  • Optional SCADA functionality can be added to the EBI Screen control room.
  • The EBI Screen control room can connect to auxiliary systems.
  • The CITYFLO 450 solution allows for integration of auxiliary systems such as passenger information displays (PIDs), CCTV, public announcement (PA) systems, radio and telecoms.

CITYFLO 450 sub-systems

EBI Screen control room

The vehicle is supervised by the EBI Screen control room system. This is a modern computer-based control and supervision system allowing the operator to give commands through a mouse or keyboard, with the facility to have the position of the vehicles and optional wayside objects shown on both normal display screens and large rear projection screens. The EBI Screen control room also provides train regulation for the system.

EBI Lock computer-based interlocking

The CITYFLO 450 solution can either use the built-in interlocking function or add optional EBI Lock computer-based interlockings for fall-back system capability or adherence to local norms. The CITYFLO 450 built-in interlocking function is located with the regional wayside ATP.

EBI Com radio block centre

The CITYFLO 450 solution's wayside equipment is divided in geographical regions. Each region has duplicated ATP and ATO equipment that handle the ATP and ATO functions for the trains in that region. Each region has one or more spread-spectrum radio to receive the transmission from the trains on their position and to send them movement authorities.

EBI Link ATC wayside equipment

The information needed from the track for the normalization of position errors for the system is passed to the train through norming point balises located in the middle of the track at various points. These balises give an exact position to the train as it passes and allows the train to normalize its position, reducing the position error.

EBI Switch point machines

A normal railway point machine from the EBI Switch point machine range can be used, depending on what is suitable for the particular market.

EBI Cab onboard equipment

The onboard equipment consists of the EBI Cab VATP and VATO which is an onboard system allowing a modern ATP system with continuous supervision and continuous update of this information through transmissions from the radio. The virtual block ATP system has an American safety certification for public transport. A CENELEC approval of the system is also expected.

Optional ATO system

The CITYFLO 450 solution has an ATO system that allows semi-automatic driving (STO-level) with a continuous change of driving strategies that can be selected automatically through the EBI Screen control room system at any time during the trajectory. The ATO system allows precision stopping by the train at stations with a typical accuracy of +/- 15 cm.

CITYFLO 450 Bankog

CITYFLO 450 - Bangkok, Thailand

Bangkok’s iconic BTS Skytrain is equipped with Bombardier’s CITYFLO CBTC mass transit rail control.

#Anchor : Wayside system integration
Yellow Bombardier CITYFLO arrives train station

Complete system provider

Bombardier is also an expert in providing fully integrated turnkey transportation systems from power supply to automatic fare collection and from passenger information to depot systems.

With over 70 systems in operation worldwide, Bombardier is proven to deliver turnkey transportation systems anywhere in the world.

As a complete system provider, Bombardier efficiently and effectively manages complex transportation system projects with multiple suppliers and partners. We are your one-stop provider.

From automated, driverless systems to intercity and high-speed solutions, everyday, our systems transport thousands of passengers quickly, reliably and safely.

Advantages of working with us

  • Quicker implementation times
  • Cost control due to risk minimization
  • Low lifecycle costs
  • Complete integration of all system components
  • Our complete portfolio of solutions including vehicles, signalling, propulsion, energy management and services

Successful project delivery

We are experts in project delivery from research and product development to project management, engineering, safety assurance, testing and commissioning, maintenance and services.
We have many years of experience in allocating the appropriate resources during the different phases of a project and successfully delivering high-quality solutions in a limited timeframe. For example, our CBTC projects in Shenzhen and Tianjin, China, were delivered in 22 and 27 months respectively from notice to proceed (NTP).

Our strengths are assured through:

  • Strict adherence to the guidelines of the leading global professional association: Project Management Body of Knowledge (PMBOK)
  • Uniform project management processes across the entire Bombardier project portfolio
  • Project execution reflecing best practice from previous projects
  • Certified project management professionals leading our key projects
#Anchor : Key references
Bombardier CITYFLO train station

Moving people worldwide

For 100 years, Bombardier has been developing, engineering and installing advanced rail control systems. Every day, Bombardier's CBTC systems move millions of people, all around the world.

First fully automated steel-wheel system

Bombardier has been leading the way in CBTC technology for over 40 years since the implementation of the first fully automated steel-wheel system for the Bay Area Rapid Transit (BART) system in San Francisco in 1972. Thirty years later, Bombardier repeated its groundbreaking success in this state as the first moving block CBTC system was installed at San Francisco Airport in 2003.

Doubling capacity in Madrid

Spain’s Metro de Madrid network is one of the largest and busiest in Europe transporting over 630 million passengers a year, with a maximum achieved ridership of 2.5 million passengers per day. Bombardier was awarded the contract to install the CITYFLO 650 moving block CBTC system to increase capacity through reduced headways. The capacity of the Metro de Madrid’s Lines 1 and 6 has almost doubled since the introduction of Bombardier’s CBTC solution.

Automated technology for Taipei

Bombardier’s CITYFLO 650 driverless CBTC system has successfully been in effect for over a decade on the dual-track fully automated Neihu Rapid Transit Line in Taipei, Taiwan. In parallel to a route upgrade and overlay equipment, there is reduced energy through shorter headways and wear and tear on the track and the vehicles, continually improving capacity and reliability for the capital city Taipei.

Short headway in São Paulo

Our turnkey CITYFLO 650 solution is being delivered for line 5 of the São Paulo metro, enabling safety with a short 75-second headway. It will be installed on 8.4 km of line with six stations, plus the extension of the line by 11.6 km with 11 new stations and a total of 34 new trains. In addition, CITYFLO 650 is also being installed for the new São Paulo monorail Expresso Tiradentes.

Mixed mode operation for Kuala Lumpur

Our CITYFLO 650 CBTC system is installed on 51 km of track to provide better access to the city centre and increased connectivity across Kuala Lumpur. Line 2 adds a further 52.2 km of track, 58 trains and nine new maintenance vehicles. One control centre with full back-up will manage all KVMRT Lines.

Easing congestion in Delhi

Delhi Metro Rail Corporation (DMRC) has awarded Bombardier a contract to supply CBTC for line 7, the city’s first driverless metro line. The 58.3 km line will link all existing lines with no fewer than 10 interchanges, easing the pressure on existing hubs by offering alternative routes across the city that avoid the most congested stations.

#Anchor : Downloads