What do the colors of traffic signs stand for?

White characters on a blue background are information boards that tell you the road ahead (such as the name of the intersection ahead, how many kilometers, etc.). );

Warning signs with white characters on a red background tell you that there is danger ahead (such as landslides ahead, no parking, etc.). );

Black and white characters on a yellow background tell you the important road conditions ahead (such as the railway ahead).

The specifications, colors and fonts of road traffic signs are uniformly stipulated by the Ministry of Communications, which are not only eye-catching, but also have different meanings: black patterns with yellow background and black edges are warning signs; White background, red circle, red bar, black pattern and pattern layering are prohibited signs; The color of the indicator is blue background and white pattern; Blue background and white pattern are guiding signs.