What color do the traffic signs represent?

1. The color is yellow background, black border and black pattern: warning sign.

2. The colors are white background, red circle, red stripe, black pattern and patterned layering: no sign.

3. The color is blue background and the white pattern is indicator.

4. Expressway with blue background, white pattern and green background, with white pattern: guide sign.

5. Orange or fluorescent orange: warning and guiding signs in road operation areas.

6. Fluorescent yellow-green: a warning sign for pedestrians and children.

Extended data:

The shapes of traffic signs represent the following signs:

1. equilateral triangle: used as warning sign.

2. Circle: used to prohibit and indicate signs.

3. Inverted equilateral triangle: a forbidden sign for "slowing down and giving way".

4. Octagonal: a prohibition sign for "stopping and giving way".

5. Fork: Used as a warning sign of "Railway Crossing Fork Sign".

6. Square: used for guiding signs, some warning, prohibition and indication signs, tourist area signs, auxiliary signs and notification signs.

References:

Baidu encyclopedia-traffic signs