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Indian Railways will soon start upgradation of tracks with high strength rails (R-350). Along with other steps such as improving train technology, installation of anti-collision systems (Kavach) and fencing of tracks, this upgradation is crucial to run high-speed trains, officials said. The railway ministry issued guidelines for adoption of R350HT grade rails on its network. This rail, the guidelines said, has been used extensively across the world and is considered as 鈥榩roven grade鈥� and hence no field trial is required. However, since these rails will be manufactured by domestic companies and used for the first time by Indian Railways, they will be kept under close monitoring for a stipulated period to detect any unusual behaviour, the guidelines added. Steel Authority of India (SAIL) is set to begin production of this rail in the next few months. In the near future the railways will invite tenders for procurement of these high strength rails. It was said that currently there are constraints to increase the speed of trains due to infrastructure issues so a lot of steps are being taken simultaneously including expansion of the Kavach system and fencing of tracks to avoid any cattle run-over and any animal coming onto the track.The railways has started the work to increase the design speed limit of the next-generation Vande Bharat trains with sleeper coaches to 220 kmph and work has also started to improve the Delhi- Mumbai and Delhi-Howrah lines to allow trains to run at 160 kmph. The Indian Railways has awarded tenders for installation of the indigenously developed anticollision system 'Kavach' on the Delhi-Mumbai and Delhi-Howrah corridors, according to Minister of Railways Ashwini Vaishnaw. He added that so far in 2023-24, Rs.35.3 million has been spent on Kavach implementation. The total budgetary allocation for Kavach during 2023-24 is `71.012 million