Monitoring the location of a truck, car or any moving vehicle using the GPS system. Widely deployed to keep track of truck fleets, vehicle tracking ensures that the vehicles are being used properly and that they can be recovered in the event they are stolen. Vehicle tracking relies both on the Global Positioning satellites (GPS) and a cellular system. A tracking module in the vehicle continuously picks up the GPS coordinates that indicate the real-time location of the vehicle. Using a cellular data service such as GPRS, the coordinates are immediately transmitted to the tracking company’s computers. Customers log in to the tracking company Web site to see their vehicles on road maps, similar to in-dash and handheld GPS-based navigation systems.