What does the white 80 road sign mean?

The number marked on the ground is white, and 80 indicates the minimum speed limit of 80km \u002F hours. The number marked on the ground is yellow, and 80 means the maximum speed limit is 80km \u002F hours. The ground number is white, indicating the lowest speed limit, and the number is yellow, indicating the highest speed limit. The following is a detailed introduction to the minimum speed limit sign: 1. Meaning: Road traffic signs are facilities that use graphic symbols, colors and words to convey specific information to manage traffic. It plays a role in ensuring smooth roads and traffic safety, so drivers and traffic participants must abide by it; Traffic safety propaganda slogans can improve drivers' and traffic participants' awareness of consciously observing traffic laws and regulations, which is of great significance to building a safe and smooth traffic environment. 2. Present situation: The setting of speed limit signs in China mainly uses the general sections with good linear speed limit roads to determine the speed limit value according to the running speed; Other road sections are set according to traffic conditions or road traffic accidents.