Why are school buses painted Yellow?

You must have often seen that the school bus is always yellow in colour, irrespective of the city. Buses of any school can be very different in appearance, the name of the school is written on them, the size of the bus varies but their colour is never changed. Do you know the reason behind this? Or have you ever wondered why the school bus, whether new or old, is always yellow in colour? 

What is the reason?

Let us tell you that a scientific reason is also hidden behind the painting of school buses in yellow colour. Understand in simple language, every colour of the world is made up of seven colours' purple, sky, green, blue, yellow, orange and red. Now each colour has a specific wavelength and frequency. The higher the wavelength, the more easily that colour will be able to come into the eyes of the people. At the same time, out of these seven colours, red has the highest wavelength. This is the reason why the red colour is used to indicate the stop light of a traffic signal or any kind of danger.

You must have seen that when the danger board is placed at any place, it is painted in red colour only. This is because the red colour comes into the eyes of the people from a long distance. Due to this, people become alert before reaching danger. At the same time, in the series of seven colours, the yellow colour is below the red colour. The wavelength of yellow is less than that of red and more than that of blue. That is, after the red colour, you can easily see the yellow colour.

The yellow colour can be seen and recognized even from a distance. This is the reason why yellow colour is applied on school buses so that people's attention remains towards it. Apart from this, another feature of yellow colour is that it can also be seen in fog, rain and dew. Also, the lateral peripheral vision in yellow colour is 1.24 times higher than that of red colour. Therefore, the yellow colour can be seen sooner than the red colour.