Indian Railways is rolling out tenders to equip 10,000 locomotives with Kavach 4.0, the latest version of India's indigenous automatic train protection system, to equip the national transporter with latest safety additions and prevent accidents due to human error and over-speeding. In the event of trains moving on main lines facing a collision, the Kavach system registers the obstructions ahead and stops the train, preventing derailment or accidents. If the driver fails to control the train in accordance with the speed restrictions, it automatically activates the train braking system. In addition, it prevents collisions between two engines equipped with a functional armour system.

A spate of railway accidents in the past couple of months has reinforced the need for a faster rollout of a train protection system that would at least check human error and signal-crossing that often results in accidents. Indian railway has a network size of 70,000 km and the government wants to cover the entire network with Kavach in about a decade, much faster than what other global Railways took to complete the system rollout.