 There were also serious questions raised about the safety of the passengers as the infrastructure on which semi-high speed trains are running may not be able to run at such high speeds.For example, it is preferred to run these higher speed trains on 60-kilogram tracks, but as of now they are running on 52-kilogram tracks.India's 1st High-speed corridor between Mumbai and Ahmedabad started construction in 2017 and is expected to be completed by 2022.