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What are the speed limits for each of the 4 lanes on a highway?

1 Answers

StAriel

09/01/25 2:17am

1st lane: The maximum speed must not exceed the highest speed limit set for that section of the road, and the minimum speed must not be lower than 80 km/h; 2nd, 3rd, and 4th lanes: The maximum speed must not exceed the highest speed limit set for that section of the road, and the minimum speed must not be lower than 60 km/h. Below is relevant information about highways: Classification: Highways are trunk roads exclusively designed for motor vehicles to travel in designated directions and lanes, with fully controlled access. Four-lane highways are generally designed to accommodate the projected annual traffic volume of various vehicles converted into passenger car units. Traffic Characteristics: The design speed of highways is mostly categorized into four levels based on terrain in rural areas: 80, 100, 120, and 140 km/h. In urban areas, two levels are commonly used: 60 and 80 km/h. The horizontal alignment of highways primarily consists of circular curves combined with transition curves, emphasizing three-dimensional spatial alignment design incorporating horizontal, vertical, and cross-sectional elements.

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