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Communications-based train control (CBTC) is a railway signaling system that uses telecommunications between the train and track equipment for traffic management and infrastructure control. CBTC allows a train's position to be known more accurately than with traditional signaling systems. This can make railway traffic management safer and more ...
Trainguard MT is a communication-based train control (CBTC) developed by Siemens Transportation Systems (ex Matra Transport international, and now integrated into Siemens Mobility) which allows fully automated circulation of rapid transit trains, and thanks to moving block system, less time between trains.
In railway signalling, a moving block is a signalling block system where the blocks are defined in real time by computers as safe zones around each train. This requires both knowledge of the exact location and speed of all trains at any given time, and continual communication between the central signalling system and the train's cab signalling ...
CITYFLO 650 signalling is a CBTC system designed by Bombardier Transportation and later Alstom.It makes use of bi-directional radio communication between trains and wayside equipment, as well as true moving block technology, to control train operation.
An example of headway on a railway system with multiple block section. Train B can only enter a section with a green or yellow "aspect" (light), and must reduce speed when passing a yellow signal to the point where they can stop within the sighting distance. Train movements in most rail systems are tightly controlled by railway signalling ...
According to the IEEE 1474 (1999), communications-based train control (CBTC) is a continuous, automatic train control system utilizing high-resolution train location determination, independent of track circuits and continuous communication between train onboard systems and wayside systems. [6]
It was the first fully automatic moving-block signalling system to be commercially implemented. SelTrac was originally developed in the 1970s by Standard Elektrik Lorenz (the "SEL" in the name) of Germany for the Krauss-Maffei Transurban , an automated guideway transit system proposed for the GO-Urban network in the Greater Toronto Area in Canada.
For Alstom, it uses the URBALIS 300 moving-block communications-based (CBTC) Automatic Train Control (ATC) system, which optimizes headway and enables extra trains to be injected automatically into the system at rush hour to increase passenger capacity and reduce congestion. [6] In the depot, trains are also operated in fully automatic mode.