What are the colors of the prohibition sign, warning sign and indication sign?

The design colors of warning signs, prohibition signs and indication signs are as follows:

1. The color of the warning sign is yellow background, black edge and black pattern, and the shape is an equilateral triangle with upward vertex. In most countries, warning signs are equilateral triangles with white as the background and red as the thick border. However, the color of the background and the color and thickness of the border vary from country to country.

In People's Republic of China (PRC) (except Hongkong and Macau), the warning sign is a black border with a yellow background.

2. Except for individual signs, the colors of prohibited signs are white background, red circle, red bar and black pattern. Embossed stripes. The shape of the prohibition sign is round, octagonal and equilateral triangle with downward vertex. At present, there are 42 prohibited signs.

3. The color of indicator is blue background and white pattern; Shapes are divided into circles, rectangles and squares. Generally speaking, roads have blue backgrounds and white patterns, while expressways have green backgrounds and white patterns.

Knowledge expansion:

1. Warning signs refer to signs warning vehicles and pedestrians to pay attention to dangerous places. After seeing the warning sign, the driver should pay attention, drive carefully and slow down.

2. No sign is one of the main traffic signs that prohibit or restrict the passage of vehicles, such as no passing, no parking, no turning left, no honking, speed limit and weight limit.

3. Indicating sign is one of the main signs in traffic signs. It is used to instruct vehicles and pedestrians to drive in the specified direction and place.

This sign means that only all vehicles can turn left (or right). It is located in an appropriate position in front of the intersection where vehicles must turn left (or right). When there are special regulations such as time and vehicle type, auxiliary signs or additional patterns should be adopted.