ATR Track II is more sophisticated hardware and software technology then previous model (presented on 3-5 July 2000 in Olsztyn during second Workshop of Satellite Navigation), made for Windows 2000/XP , which works as a Command Center in a system with mobile units equipped with GPS and wireless data communication. In the project the GIS MultiViewer application was developed, that visualizes real time GPS navigation data over the public security system. In addition to position messages, vehicle alarm status and text messages can be sent between the vehicles and the Command Center in order to control and supervise the operation. Moreover, areas on the map can be defined as alarm zones and if a vehicle enters such an area, an alarm will be generated and followed on the map and all positions are recorded. In this condition, the red alarm label appears, an alarm signal is generated the vehicle is zoomed.