Making The Brakes In India: Railways To Adopt Homegrown Technology Called 'TCAS' To Prevent Accidents by Arun Kumar Das - Dec 27, 2020 06:32 AM Union Minister for Railways Piyush Goyal Snapshot TCAS is an Automatic Train Protection system and has been developed by the Railways along with manufacturers from within the country. It is said to be capable of preventing train accidents caused due to âSignal Passed At Dangerâ, disobedience of train speed restrictions among others, by automatic application of brakes, should the train driver fail to do so. Shifting strategy, Indian Railways will now go in for indigenously developed accident prevention systems instead of costlier European technology to ensure passenger safety.