The previous technique of manually exchanging train movement information between stations and the control office did not let the controller make prompt decisions about train management in the event of an unforeseen circumstance that throws operations off balance. Likewise, there was no timely information accessible to the Assistant Station Master (ASM) to guarantee accurate announcements and displays. In order to accommodate the high volume of traffic in the suburban sector, it was necessary to give the various agencies—such as the controller and ASM—“ON LINE” information about train movements. This way, they could respond promptly and effectively in the event that the operation was disrupted. Consequently, the necessity for a Train Management System (TMS) was recognized. The concept for the Train Management System. Likewise, there was no timely information accessible to the Assistant Station Master (ASM) to guarantee accurate announcements and displays. It was necessary to give the various agencies “ON LINE” information on train movements in order to accommodate the high number of traffic in the suburban sector. In addition to providing a passenger information system in the form of video display units at station entrances to inform commuters of train running information, the Train Management System project envisions the “online” operation of the current train indicators at various stations. This project also includes automatic station announcements from the TMS Control Centre and a countdown in minutes for passengers to receive minute-by-minute train arrival information.