How many days can national highway violations be checked?

[LailaRose]

National highway violations can be checked within at most half a month. The following is an introduction about national highways: 1. Introduction: National highways refer to major trunk roads with national political and economic significance. 2. Composition structure: (1) Trunk roads connecting the capital to the political and economic centers of provinces, cities, autonomous regions, and cities with a population of more than 300,000. (2) Trunk roads leading to major ports, railway hubs, and important industrial and agricultural production bases. (3) Trunk roads connecting large and medium-sized cities to important foreign ports, open cities, historical cities, and important scenic spots. (4) National defense trunk roads of great significance. These highway lines form the framework of the national highway network.