1. Vehicle tracking function Using GPS and electronic maps, the actual position of the vehicle can be displayed in real time, and it can be enlarged, reduced, restored, and changed. Multi -vehicles and screens are tracked at the same time. Using this function can track and transport important vehicles and goods.

　　2. Providing travel route planning and navigation functions to provide travel route planning is an important auxiliary function of the car navigation system. It includes automatic line planning and artificial line design. The automatic line plan is the starting point and destination by the driver. The computer software automatically designs the Z Jiaxing route as required, including the fast route, Z's simple route, and the calculation of a small number of routes with a small number of highway road sections. The artificial line design is automatically established by the driver to design the starting point, end point and passing point according to his destination. After the line plan is completed, the display can display the design route on the electronic map, and at the same time display the car operation path and method of the car.

　　3. The information query function provides users with main objects, such as tourist attractions, hotels, hospitals and other databases. Users can display their position on the electronic map. At the same time, the monitoring center can use the monitoring console to inquire the location of any target in the region, and the vehicle information will be displayed on the electronic map of the control center in a digital form.

　　4. Call command function command center can monitor the operating conditions of the vehicle in the area and reasonably dispatch the monitored vehicles. The command center can also talk with the tracking target at any time to implement management.

　　5. Emergency assistance functions can provide emergency assistance to vehicles encountered in danger or accidents through the GPS positioning and monitoring management system. The electronic map of the monitor shows the help information and the alarm goals, the plan is better than an excellent aid solution, and the alarm sounds reminds the staff on duty for emergency treatment.

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Handheld GPS navigation products will enter a period of rapid development.