Categorized as communications-based train control CBTC , it also is evolving into a signaling option for both passenger and freight railroads. To date, CBTC is employed at a dozen or so passenger railroads and airport trams, while several others in the North American rail industry are considering whether to adopt it. In addition, others are working to develop and market their system for broader rail industry applications. Count Siemens among those pursuing system enhancements.
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Categorized as communications-based train control CBTC , it also is evolving into a signaling option for both passenger and freight railroads. To date, CBTC is employed at a dozen or so passenger railroads and airport trams, while several others in the North American rail industry are considering whether to adopt it.
In addition, others are working to develop and market their system for broader rail industry applications. Count Siemens among those pursuing system enhancements. Trainguard MT is designed to operate at different train-control levels, handle trains with different train control equipment at the same time in the same network, and help reduce lifecycle costs by minimizing the number of outdoor elements and maximizing energy efficiency.
In addition, the ATS portion of CBTC now is much more sophisticated, with greater functionality than there was four or five years ago, he says. Recent enhancements include junction and work-zone management, a graphical user interface, and the ability to access a supervisory control and data acquisition system to determine if track is energized or de-energized. Slated to enter service in , the QBL CBTC system will enable the agency to operate more trains per hour on the underground line between Queens and Manhattan and provide more reliable service.
Last month, RailWorks Corp. SelTrac features built-in flexibility to address the diverse requirements of railroads needing basic automatic train protection, cab signalling or CBTC-based operations. Originally equipped with a roadbed resident audio frequency control solution by Boeing in the s, the PRT will feature Thales' 2.
To date, SelTrac has been installed on about 1, miles of subway and light-rail lines in 40 major cities. On Dec. The opening marked the seventh extension to the SkyTrain network — which is entirely SelTrac-equipped — since the original Expo Line launched in Meanwhile, Alstom Transport continues to seek more customers for its Urbalis CBTC system, which is designed to interface with all types and suppliers of rolling stock to reach optimal automatic train operation ATO performances in terms of control and stopping precision.
Since Alstom installed the first Urbalis system in Singapore in , it has equipped 80 metro lines in 40 cities around the world with the CBTC solution. The company recently completed the following additions to traditional CBTC: automatic coupling in nominal and rescue modes; more efficient recovery modes in case of software crashes, such as the remote reset of automatic train control computers; better energy management by optimizing train synchronization at peak hours and more energy efficient speed profiles at off-peak hours; more efficient crisis management tools in integrated control centers; and redesigned hardware and software platforms for higher availability and better performance.
Thus, maintenance costs can be lowered over the life of the system, he added. The firm has been active in the sector since the s, when it developed the first moving-block CBTC signaling products for mass transit, automated people mover APM and monorail applications, Bombardier officials said in an email. That S. The wired network that was based on a fiber distributed data interface is being replaced with a higher-speed gigabit ethernet network.
Bombardier also is making modifications to the handling of any communication failures with the train to improve automatic service recovery. The system will be unique because it will incorporate three levels of automation: manual and automatic train protection ATP along street areas, ATO in the tunnel and unattended train operations in the yard, Bombardier officials said. The system, which employs CBTC functionality, offers main features that include support for on-street and segregated driving and train tracking via GPS.
The company is migrating to the latest generation of user interface for the control center aspect of the system to include upgraded features, implementing additional layers of security and developing a new suite of performance modeling tools. For the onboard aspect, Ansaldo is creating uniform, standardized packaging and interfaces to provide customers quicker implementation time and a lower cost.
The company also is investigating other technologies to enhance its odometry, which will help lower equipment cost and increase overall performance, Ansaldo STS officials said in an email. For Wabtec Corp. The PTC system of choice for many freight and commuter railroads, I-ETMS has grown to support CBTC applications for those railroads via the integration of on-board, wayside and office systems over multiple communications networks, Wabtec officials said in an email.
Wabtec is working to extend I-ETMS into a vital standalone train-control solution that will provide the capability to implement moving block operations through the installed base of 23, I-ETMS-equipped locomotives in the United States. Those efforts include upgrades to existing related products, including crash-hardened HD video and end-of-train telemetry systems. The vital standalone system will be offered in North American and international markets to address emerging CBTC needs without the need for extensive wayside equipment, Wabtec officials said.
That enables synchronization of the onboard track database, navigation, wayside and control setting status to provide automatic I-ETMS train operation with both acceleration and dynamic braking functions.
Rail Topics. Find Service Providers. Browse Keywords. From the editor: On the leadership changes at CSX. Photo — Thales. The personal rapid transit system at West Virginia University.
SEPTA Awards Ansaldo STS CBTC Contract
Communications-based train control CBTC is a railway signaling system that makes use of the telecommunications between the train and track equipment for the traffic management and infrastructure control. By means of the CBTC systems, the exact position of a train is known more accurately than with the traditional signaling systems. This results in a more efficient and safe way to manage the railway traffic. Metros and other railway systems are able to improve headways while maintaining or even improving safety. A CBTC system is a "continuous, automatic train control system utilizing high-resolution train location determination, independent from track circuits ; continuous, high-capacity, bidirectional train-to-wayside data communications; and trainborne and wayside processors capable of implementing automatic train protection ATP functions, as well as optional automatic train operation ATO and automatic train supervision ATS functions," as defined in the IEEE standard. The main objective of CBTC is to increase track capacity by reducing the time interval headway between trains. Traditional signalling systems detect trains in discrete sections of the track called ' blocks ', each protected by signals that prevent a train entering an occupied block.
Communication-Based Train Control (CBTC)
Suppliers enhance CBTC systems to function in a more complex rail environment
New CBTC awarding for Ansaldo STS in France the contract with RATP is worth €17.6 million