1. National Highway Network Information Inquiry System: This website is provided by the National Highway Information Center, and detailed information of the national highway network can be found. As long as you enter the name, route number, starting point and end point of the road, you can find the required road information.
2. Gaode Map and Baidu Map: Both provide road information query function, which can not only be found by searching the road name, but also support direct viewing on the map. In addition, they also provide real-time traffic information and traffic flow data.
The above methods are for reference only. If more information is needed, it is suggested to inquire or consult the staff in official website, the local transportation center.