What is the width of a two-way provincial highway?

[HenryFitz]

The width of a provincial highway is generally around 30 meters. Each lane is 3 meters wide, and a first-class highway must have at least two-way four lanes, which is 12 meters, with shoulders at least 1.5 meters wide on both sides, making the minimum width 15 meters. Below is some relevant information about two-lane highways: 1. Traffic regulations: According to the 'Highway Route Design Specifications' JTGD20-2006, Class IV highways should adopt two lanes (two-way two lanes), and single-lane sections can be used in areas with low traffic volume and difficult engineering conditions; Note in Article 6.2.1 on lane width: When the design speed is 20Km/h and it is a single lane, the lane width should be the lane width. 2. Class IV highway width: The single-lane subgrade width of a Class IV highway is 4.5m; when the subgrade width of a Class IV highway is 4.5m, passing bays should be set up at favorable locations at intervals of no more than 300m.