CMC Limited has developed and deployed a vehicle tracking and real time passenger information system (RTPIS) for Andhra Pradesh State Road Transport Corporation (APSRTC) in India. The RTPIS assimilates state-of-the-art technology, GSM/GPRS technology and GIS. The GPS-based RTPIS is indigenously developed by CMC at its in-house research and development wing. The system allows APSRTC to track the buses by displaying the information on a digital map at the RTPIS control center. The drivers can both send and receive digital messages to the RTPIS control center which will be displayed in Telugu and English on the vehicle-mounted unit. The pilot implementation of RTPIS includes 26 buses within the Hyderabad city and 49 buses operating between Hyderabad-Vijayawada and above. Vehicle-mounted units have been installed in these buses. The display boards located at Hyderabad, Suryapet, Kodad, and Vijayawada provides information about arrival of buses, type of services and number of seats available in the approaching bus.