Traffic signs are divided into seven categories

(1) warning: warning to vehicles and pedestrians pay attention to signs of dangerous locations. (2) the prohibition signs: signs to prohibit or restrict the vehicles, led traffic signs behavior. (3) indicator: indicates the vehicle, pedestrian road. (4) the sign: pass on the road direction, location, distance marker. (5) tourist area signs: signs of tourist attractions direction, distance. (6) road construction safety signs: signs passage notices road construction area. (7) auxiliary signs: attached to Solar Traffic Sign sign of auxiliary illustrate the use of the mark.