Page 45 - Traffic infratech magazine

FUTURE MOBILITY

he first High-Speed Rail (HSR) the technology that is necessary for The track is equipped with circuits, so
project in India, i.e., Mumbai- railway operations. Apart from the when a train comes to a fixed block, it
Ahmedabad HSR, is moving core technology of the railway system, is detected through these circuits and
forward at a steady pace, the technology needed for improved signals for other trains are generated
Tand it is time for all of us to passenger services is also part of this. accordingly. However, this system still
concentrate our energy into turning has a problem of train crew not able
this project in a success story. The first Operation Technology to follow signals leading to accidents.
system of HSR will undoubtedly be based Rolling Stock, Track, Signaling, Power In a moving block system, the block
on Japanese technology. However, for Supply, Station, and Control Center is determined based on the current
the HSR to deliver on its promises of are all parts of the core technology position of a train and the block moves
the safe, punctual, and reliable mode of the railway system. Readers are as the preceding train moves. Hence,
of transportation is only possible directed somewhere else for a detailed higher utilization of capacity is achieved.
when the Indian industry can steadily overview of the entire core technology The Japanese system of ATC combines
supply low-cost, high-quality technical of Japanese HSR , and only vital the principles of moving the block and
products. For industry, the initial high components are discussed here. automatic braking (Figure 1) . For this
capital expenditure necessary to set system, the trackside ATC circuits,
up the manufacturing, testing, quality Automatic Train Control detect the accurate positions of the
(ATC) system
management systems, and research two trains. The onboard ATC system at
centers can be rationalized for several As the maximum operating speed of the preceding train then calculates the
HSR projects in the pipeline as well as the train increases, so does the braking Braking Curve for that specific train. The
towards the modernization plans for distance. This implies that headway driver is accordingly shown speed limits
Indian Railways. between the train should also increase, inside the cab, and if the driver fails to
The focus here is only on Operation resulting in less capacity utilization. apply brakes, the onboard ATC system
Technology, in which we will discuss However, in Japan, passengers can find automatically applies brakes.

Figure 1 Overview of the ATC system (Source : 2)

a train every four minutes on Tokyo- A detailed look into the ATC
Osaka routes. Such high-capacity usage system will then immediately reveal
is possible because of the moving block several technical components that are
system as opposed to a conventional crucial and will need to be developed
fixed block system. In a fixed block domestically. First is a method of
system, the track is divided into accurate position detection systems
segments and to achieve safety only for trains. The Japanese system relies
one train can enter these segments. on precision Tachometer, which

www.trafficinfratech-com-500653.hostingersite.com June-July ’19 / TrafficInfraTech 45