What is the general speed limit on highways?
1 Answers
Highways have a maximum speed limit of 120 kilometers per hour and a minimum speed limit of 60 kilometers per hour. Below is the relevant introduction: Introduction to highways: Highways, abbreviated as expressways, refer to roads specifically designed for high-speed vehicle travel. Different countries, regions, eras, and academic fields have varying definitions for highways. According to China's "Technical Standards for Highway Engineering" (JTGB01-2014), highways are defined as multi-lane roads exclusively for directional and lane-based vehicle travel, with full access control. The average annual daily traffic volume for highways should exceed 15,000 passenger cars, with a design speed ranging from 80 to 120 kilometers per hour. Purpose of highway speed limits: The original intention of speed limits is not solely for safety. Speed limits to some extent reduce the consumption of petroleum and rubber. When vehicle speed exceeds a certain threshold, the car body can no longer withstand collision energy, and airbags and seat belts cannot mitigate the injuries caused to passengers. Another critical factor is the protective design of the highway itself. If the speed exceeds the limit, the guardrails on both sides of the road will no longer provide effective protection.
