What is the speed limit for urban three-lane roads?
1 Answers
Here is information about the speed limits for urban three-lane roads: 1. Urban expressways: The left lane has a maximum speed limit of 120-110 km/h, the middle lane: 110-90 km/h, and the right lane: 90-60 km/h. When there are specific speed limits, follow the relevant expressway speed limits. 2. Ordinary urban roads: The speed limit for each lane should not exceed 70 km/h. Below is an introduction to different types of roads: 1. Expressways: Roads constructed to handle large volumes of urban traffic smoothly. They should have smooth alignments, be separated from ordinary roads, and ensure safe, smooth, and comfortable automobile traffic. 2. Arterial roads: Major traffic routes connecting the main parts of a city, forming the backbone of urban roads. Their primary function is transportation. Traffic on arterial roads should maintain a certain speed, so lanes of appropriate width should be set up based on traffic volume to allow smooth vehicle movement. The alignment should be straightforward, and intersections should be minimized to reduce interference from vehicles entering or exiting intersecting roads. Traffic control measures should be implemented at intersections. If traffic exceeds the capacity of an intersection, grade separation can be adopted as planned. 3. Secondary roads: Major roads within a district, serving both general traffic and other functions, complementing arterial roads to form a road network that connects various parts of the city and facilitates traffic distribution. Generally, fast and slow vehicles share these roads. If conditions permit, separate bicycle lanes can be provided. Sidewalks should be installed on both sides, and public buildings that attract pedestrian traffic can be set up.
