What colors are commonly used to test color blindness in vehicle management office?

There are orange and blue, yellow and brownish yellow, gray and blue pictures in the vehicle color-blind DMV test.

The contrast between the characters and the background is more obvious. The background is mainly composed of blue and green colors, while the characters are red. This photo can give you a strong visual impact. If there is no problem with vision, you can recognize 98 at a glance, but people with red-green color blindness are different and can't recognize it.

When applying for a driver's license, in addition to some pictures and numbers, there is also an animal image, which is slightly more difficult than numbers. The animal images in this painting are a rooster and a bird. If you can't see them at all, you may be color blind.

Color blindness test charts are mainly red, yellow and gray color digital charts. It is difficult for color-blind people to see what numbers are. The correct answer to the number in the figure below is 16. If you see it, it proves that you are not red and yellow color blind.

Extended data:

Driving will inevitably encounter red lights, green lights and yellow lights, as well as various road signs, signs, direction signs and so on. These are all colored, so it is naturally impossible for a person who fails the subject 1 according to the national regulations to issue a driver's license, let alone legally drive on the road.

Color blindness and infirmity are not suitable for driving. For example, people with red blindness have weakened or lost their ability to distinguish red. In his view, the light of the red light is dark and not bright, so it is easy to run the red light and cause traffic accidents.

Some people can clearly distinguish traffic lights, but in their eyes, the difference between red and green is not as obvious as that of normal people, and it may be as easily disturbed as the difference between red and brown.

Therefore, color blindness, especially red-green color blindness, can't pass subject one and can't get a driver's license.