to tell them apart from public transport.
Yellow became the colour for school buses in 1939, so till then and for a while after 1939 it is conceivable that buses were a different colour than yellow.
Visibility and distinction. It's a highly visible colour, and it's distinct in that it is the colour associated with school buses.
because they feel like it
I think school buses are yellow because not many cars are yellow so they will stand out more. School buses are painted chrome yellow for its high visibility Also because the federal safety people say it has to be. So technically yellow school buses are a federal law
American school buses are primarily painted a distinctive shade of yellow known as "school bus yellow." This color was specifically chosen for its high visibility and safety, making the buses easily recognizable on the road. The bright yellow hue helps ensure that drivers notice the buses, especially when children are boarding or disembarking.
really school buses are orange and yellow
The reference given below, will help you to know more about your question.
School buses are painted yellow for safety and visibility. The color yellow is highly visible in various weather conditions, making it easier for drivers to spot buses on the road. Additionally, the use of yellow helps distinguish school buses from other vehicles, signaling that children are likely nearby. This standardized color helps ensure the safety of students during their commute.
Not all buses are yellow but most school buses are yellow.
There is no set colour for school buses in Europe. Europe has about 50 countries and they have lots of school buses of all sorts of colours.
Wet floor signs are always yellow because that color is very eye-catching and will alert the oncomer of a spill. Yellow signifies to be careful. That's why school buses are also yellow.
It is a federal law.