Why do street lights use warm yellow light?

Many people have found such a problem. When we walk under the street lights, we often find that the street lights use warm yellow, and rarely see the use of white street lights. At this time, some people may ask such a question, why do street lights use warm yellow? Will it be better to use white? Let me give you a brief introduction.
1. Visual factor
Since street lights are usually used on the side of the road, when installing street lights, it must be considered visually, not only the lighting problem, but also the safety problem. If the warm yellow of the street lights is used If you change the light to white, you will find that if you stare at it for a long time, it will make your eyes very uncomfortable, and even cause the feeling of blackness in front of your eyes.
2. Light
From the analysis of light, it can be found that although the length of white light is higher than that of other colors, and it can illuminate farther places, making our field of vision look wider, but if we use this kind of white light It will affect our visual nerves, and with the cooperation of some advertising lights or store lights, our vision will look very tired.
3. Security issues
Compared with white lights, warm yellow lights can make our spirit and attention more concentrated, which is why street lights choose warm yellow lights.