Lane-level navigation can accurately identify the current lane, and the positioning accuracy is generally less than 1 meter. Through lane-level navigation, the system can automatically determine the current lane where the car is located, and the parallel line position will be intelligently reminded, the real lane will be accurately restored, the fork road will be displayed in high definition, and the ground markings in the easy-to-violate area will be highlighted. Having lane-level navigation will greatly reduce the possibility of going the wrong way. When you are driving in a bus lane, when you drive into an emergency lane, when you encounter a long solid line, and when you are near the expressway exit, the navigation will broadcast a reminder to guide you how to change lanes correctly, making the driving experience more intuitive. Lane-level navigation benefits from the development of China Beidou. China's Beidou system, which took 26 years and invested more than 654.38+0.2 billion US dollars, was completed in 2020. Beidou high-precision positioning service platform 2.0 can achieve second-level positioning, and the positioning accuracy can be improved to 1.2 meters, which makes it possible for high-precision map navigation in China. In addition, Beidou supports LPP protocol, so that our Kirin chip, Qualcomm chip and MediaTek chip can all use Beidou's positioning service. Baidu map and Gaode map are both important application cases of Beidou navigation.