The Klang Valley Mass Rapid Transit (MRT) railway line in Malaysia was the first of three new lines planned to serve the Greater Kuala Lumpur area, with 31 stations serving a population of 1.2 million. The 51km-long line required a multi-node distributed Passenger Information Display System (PIDS) to display live train information, synchronised PA/PIDS messages, images and logos, safety messages and billable advertising. This was also required to integrate with the Public Address Voice Alarm (PAVA) equipment, so that screens located on the station platforms would display emergency information and wayfinding in the event of an emergency.