The main function of road signs is to implement lane separation, which can guide different cars along the demarcated route to go their own way, thereby reducing traffic pressure and reducing the occurrence of traffic accidents. There are many different types of road sign coating, but no matter which one, they must meet the requirements of road maintenance for road sign coating.

In highway maintenance, the performance requirements of road sign coating materials used in traffic engineering are relatively high. First, it requires short drying time and simple operation to reduce traffic interference;
Secondly, it is required to have strong retroreflective ability, bright colors and high reflectivity, so as to have good visibility during the day and night;
Third, road sign coating has good anti-skid and wear resistance to ensure the service life of driving and marking. Hot-melt reflective paint is characterized by quick-drying, and the drying time is 1-3min. Synthetic resin combines coloring pigments, extender pigments, reflective materials, etc. with the road surface. It has the characteristics of strong adhesion, stable performance, chromaticity, brightness and long-term reflectivity, and it also has good abrasion resistance and skid resistance. 
In summary, in highway traffic engineering, reflective hot melt marking paint is a more commonly used road sign coating.