How wide is a two-lane road?

[PeterDella]

Two-way lanes for small vehicles should not be less than 6m, while two-way lanes for medium-sized or larger vehicles should not be less than 7m. Below is additional information: Introduction to lane width: The clear width of two-way fire access ramps should not be less than 7m. The width of one-way motor vehicle lanes should not be less than 4m, two-way lanes for small vehicles should not be less than 6m, and two-way lanes for medium-sized or larger vehicles should not be less than 7m. The width of one-way non-motorized vehicle lanes should not be less than 1.5m, while two-way lanes should preferably not be less than 3.5m. Lane introduction: Lane width [lane-width] (also known as standard lane width) refers to the width required for a single line of vehicles to travel safely and comfortably on a road, including the outer contour width of the design vehicle and the necessary clearance for passing, overtaking, or parallel driving.