Can the fire flag be yellow?

1, yellow only indicates caution and warning. Devices, equipment or environments that warn people to pay attention are marked with yellow.

2. Red means prohibition, stopping, fire fighting and danger.

3. Blue: indicates the instructions and regulations that must be observed.

4. Green means traffic, safety and information. If it is passable or safe, it can be painted green.

5. Black and white: generally used as the contrast color of safety color, mainly used as the background color of the above safety color. Yellow can't completely represent the fire flag.