School bus yellow is a color which was especially formulated for use on Canadian and United States school buses in 1939. The color is now officially known in Canada and the U.S. as National School Bus Glossy Yellow and was originally called National School Bus Chrome. The pigment used for this color was for a long time the lead containing chrome yellow.[1]
In April of that year, Dr. Frank W. Cyr, a professor at Teachers College, Columbia University in New York organized a conference that established national school-bus construction standards, including the standard color of yellow for the school bus. It became known officially as "National School Bus Chrome." The color was selected because black lettering on that hue was easiest to see in the semi-darkness of early morning.
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.
to tell them apart from public transport.
The reference given below, will help you to know more about your question.
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.
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.
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
Yellow Buses was created in 1902.
yellow buses
really school buses are orange and yellow
According to the website China Pictures, there is not one uniform color that applies to all buses in China. The Chinese have double deck buses and "normal" buses. Looking around at pictures, it is clear that buses in China come in all color varieties and often have multiple colors. Some are all white, others yellow or green but most have at least two colors and some type of advertisement or text on them.