Indian Railways has commissioned Kavach 4.0, the latest version of its indigenous Automatic Train Protection (ATP) system, on 738 route kilometres across two major corridors. The system has been deployed over 633 route kilometres in the Palwal-Mathura-Nagda section on the Delhi-Mumbai route and 105 route kilometres in the Howrah-Bardhaman section on the Delhi-Howrah route. The update was shared by Railway Minister Ashwini Vaishnaw on Friday in a written reply to the Rajya Sabha.

Kavach is a safety-certified SIL-4 technology designed to assist loco pilots by automatically applying brakes if speed limits are exceeded and by ensuring safer operations in adverse weather. Field trials for the system began in 2016, followed by independent safety assessments. Version 3.2 was approved for supply

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