The first class highway is a type of highway class in our country, after the highway, before the second class highway, widely used in the construction of trunk routes. Before the 1980s, the first class highway was the first in the early Chinese highway class; after the introduction of the highway, in order to avoid the trouble of changing the old highway class system again, but also for the sake of simplicity and highlighting the name of the highway exclusively for high-speed automobile driving, the traffic department will directly add the highway to the ranks of the traditional highway class, located in front of the first class highway, to become the new highest level of the highway. The first class highway is in second place.