The function of prohibition signs is to prohibit or restrict vehicles, such as no passing, no parking, no left turns, no honking, speed limits, weight limits, etc.

The color of the prohibition signs, except for a few signs, is white background, red circle, red bar, and black pattern. Pattern bar. The shape of the prohibition sign is a circle, an octagon, or an equilateral triangle with the top corner pointing downward.

Extended information:

Prohibition sign regulations

1. Prohibition signs indicate prohibition, restriction and corresponding lifting, and road users should strictly abide by them.

2. For road sections with prohibition signs that vehicles cannot pass without detouring in advance, corresponding warning or detour signs should be set up in front of the intersection or at an appropriate location when entering the prohibited section.

3. The shape of the prohibition sign is circular, but the "stop and yield sign" is octagonal, and the "deceleration and yield sign" is an inverted equilateral triangle with the vertex pointing downward.

4. Please refer to relevant regulations for the size of prohibition signs.

5. Prohibition signs are set up near the starting point of the road section where prohibitions, restrictions and corresponding lifting begin.

Reference material: Baidu Encyclopedia - Prohibition sign instructions

Reference material: Baidu Encyclopedia - Road traffic signs