What is the speed limit for secondary roads in kilometers?

[StEllie]

Secondary highways mostly consist of two to six lanes in both directions, with speed limits ranging from 40 to 80 kilometers per hour. Below is relevant information about secondary highways: Positioning: Secondary highways are one type in China's highway classification system, ranking below first-class highways and above third-class highways, and are widely used in actual road construction. Secondary highways are mid-level pavement grade roads, ranking third in the highway classification system - above third-class highways but below expressways and first-class highways. Function: Their primary purpose is to connect specific administrative centers, transportation hubs, commercial areas, residential communities, industrial/mining zones, or tourist attractions. An important characteristic is constructing the widest and straightest possible road surface with relatively low investment and construction costs, making them the most comprehensively utilized type of road.