School buses in other countries are not much different from regular buses and minibuses. For example; In Turkey, minibuses are used as school buses instead of buses. There is no color difference and only rear warning sign is located.
American school buses, which carry up to 30 million students daily, quirky has a design. Of course this was not always the case.
The first examples of school buses in the US were horse-drawn carriages made in 1886 by the Wayne Works company.

These were called “school hacks” or “kidhacks”. In those years they were not very common, children went to school with different options.
With the advent of automotive technology, the same company produced a new model in 1914.

In this model, which is one of the first buses, the seating style is not back to back. opposite it was in a layout (like some seats in subways).
Then the Blue Bird Company started designing a bus that looked like the buses we know today.

on the roof of the bus “California Hill” The patent for the design is Gillig Bros. acquired and widely used.
In the late 1930s, school buses went through a series of standardizations. Because parents were concerned about the safety of school buses.

Traveling the country and observing these buses, Dr. Frank Cyr held a conference at Manhattan University and talked about school buses in development. 44 national standards contributed to its creation.
One of these standards was the color of the buses.

Of other colors both day and night 1.24 times faster because it gets noticed bright yellow was chosen. This color is preferred in taxicabs and some traffic warnings for the same reason.
Initially, this bus was introduced in 35 US states and parts of Canada, with the year 1974 It spread across the US.
Sources: 1, 2, 3