What is the width of a single traffic lane in meters?

[DeFelix]

The width of a single lane on urban roads is 3.5 meters. Quasi-expressway width standards: A four-lane bidirectional expressway is 2X7.5 meters, a six-lane bidirectional expressway is 2X11.25 meters, and an eight-lane bidirectional expressway is 2X15 meters. Expressways are classified as high-grade highways. According to the "Technical Standards for Highway Engineering" issued by the Ministry of Transport of China, an expressway is defined as "a road that can accommodate an average annual daily traffic volume of more than 25,000 passenger cars, is exclusively for high-speed divided-lane vehicle traffic, and has fully controlled access." Road width standards: Each lane on urban roads is 3.5 meters wide, diversion lanes at intersections are 2.3-2.5 meters per lane, trunk roads (including expressways) have a lane width of 3.75 meters, and shoulders (emergency stopping lanes on expressways) are 1.5-2.5 meters wide. Each lane at expressway toll stations is 2.5 meters wide, and when necessary, an extra-wide toll lane of more than 3.5 meters must be established to maintain smooth traffic flow.