Automatic train protection system: Kavach 4.0 commissioned over 472 Km – Here’s how the rail safety system works

Kavach 4.0 railway commissions: Routes

• Kavach 4.0 on Virar-Surat section

Western Railway has commissioned the Kavach automatic train protection system on the Virar–Surat section, covering 28 stations and 28 block sections. The project includes the installation of 33 S-Kavach units in relay rooms and relay huts, 64 Radio Interface Units (RIUs) in auto huts and OC locations, erection of 33 tubular lattice towers of 40-metre height, and laying of 412 km of optical fibre cable (OFC) in dual paths.

• Kavach 4.0 on Tughlakabad Junction cabin–Palwal section

Northern Railway has commissioned the Kavach system on the Tughlakabad Junction Cabin (Delhi area)–Palwal section, spanning 35 km. The four-line corridor covers 152 main-line track kilometres and includes major station yards. Kavach has been installed across the entire stretch, covering two main lines equipped with automatic signalling and two lines operating under the absolute block signalling system.

• Kavach 4.0 on Manpur-Sarmatanr section

East Central Railway has commissioned the Kavach system on the Manpur-Sarmatanr section of the DDU-Pradhankhanta rail line. This section is a crucial part of the busiest Delhi-Howrah rail corridor. It passes through the states of Uttar Pradesh, Bihar, and Jharkhand. It has a total of 77 stations, including 8 junction stations, 79 level crossing gates, and 7 intermediate block signals. All types of mixed traffic, including freight, mail/express, and passenger trains, operate on this section.

Kavach 4.0: Here’s how the rail safety system works

The Kavach is an makes rail operation safer by applying brakes in trains in critical situations. The system automatically protects against Signal Passing at Danger (SPAD), Head-on and rear-ends collision risks. Moreover, Overspeeding is continuously monitored and controlled and Safety is ensured even in low visibility and adverse weather conditions.

It complies with SIL-4 safety standards, the highest level of safety integrity globally. Being an indigenously designed and cost-effective system, it reduces dependence on imported technologies and promotes Indian signaling industry.