What is the unit of vehicle speed?
1 Answers
Generally, the unit displayed on the speedometer of domestic vehicles in China is kilometers per hour (km/h). Below is an introduction to relevant knowledge about vehicle speed: Definition: The speed of a vehicle or traffic flow is an important fundamental parameter, generally defined as the distance traveled by a vehicle per unit of time. Speed limits: The design speed for highways in China varies mostly according to terrain, categorized into three levels: 80, 100, and 120 km/h in rural areas; and two levels: 60 and 80 km/h when passing through cities. The horizontal alignment of highways primarily consists of circular curves with transition curves, emphasizing three-dimensional spatial alignment design that integrates horizontal, vertical, and cross-sectional dimensions.