What categories can traffic signs be divided into?

Road traffic signs are divided into primary signs and auxiliary signs. Main signs can be subdivided into the following categories:

1. Warning signs: signs that warn vehicles and pedestrians of dangerous locations.

2. Prohibition signs: signs that prohibit or restrict vehicle and pedestrian traffic behaviors.

3. Instruction signs: signs indicating the movement of vehicles and pedestrians.

4. Guide signs: signs that convey road direction, location, and distance information.

5. Tourist area signs: Provide signs indicating the direction and distance of tourist attractions.

6. Road construction safety signs: signs announcing the passage of road construction zones. Auxiliary sign: A sign attached under the main sign to serve as an auxiliary explanation. The outer edges of the borders of road traffic signs have a background color. The background color regulations are: yellow for warning signs, white for prohibition signs, blue for instruction signs, green for highways and urban expressways, and blue for other roads.