1. After the user marks any two points on the car GPS navigation system, the navigation system will automatically design the best route for the car owner according to the current location. In addition, it also has a modification function. If the user does not take the best route recommended by the on-board GPS navigation system because he accidentally misses the intersection, and the vehicle position deviates from the best route trajectory by more than 200 meters, the on-board GPS navigation system will location, redesign a route back to the main route for the user, or design an optimal route for the user from the sexual location to the destination.

　　2. Turn to the voice prompt function

　　As long as the vehicle encounters the intersection ahead or turns, the vehicle GPS voice system prompts the user to turn and other voice prompts. This will prevent the owner from taking detours. It can provide the whole process of voice prompts, and the driver can realize the whole process of navigation without observing the display interface, making driving safer and more comfortable.

　　3. Add point of interest function

　　Since most cities in our country are in the construction stage, new buildings may appear anytime and anywhere. Therefore, the update of electronic maps has also become a concern of many consumers. Therefore, if you encounter some target points that are not on the electronic map, as long as you are interested or think it is necessary, you can add the point or new route to the map. These newly added points of interest, like any original point on the map, can be applied to functions such as electronic map viewing.

　　4. Positioning

　　GPS can accurately determine its position by receiving satellite signals, and the position error is less than 10 meters. If the machine has a map, you can mark the corresponding position on the map with a mark. At the same time, GPS can also replace the traditional compass, display the direction, replace the traditional altimeter, and display information such as altitude.

　　5. Speed measurement

　　Through GPS receiving and calculating the satellite signal, the specific speed of driving can be measured, which is much more accurate than the general odometer.

　　6. Display track

　　If you go to an unfamiliar place and someone leads the way when you go there, don’t worry about what to do when you come back. GPS has a track record function, which can record the route your vehicle travels. The accuracy is less than 10 meters, and it can even display two difference in lanes. When returning, the user can activate its return function and let it lead you home smoothly along the route you came from.

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