Color choices often feel arbitrary, yet many of the shades we see every day—on roads, screens, uniforms, and products—are the result of careful research, historical constraints, or unexpected accidents. These decisions, made decades ago or in moments of convenience, quietly shape how we navigate the world. Once you start noticing them, it becomes clear that color is rarely just about aesthetics. There is usually a practical reason behind it, waiting to be uncovered.
#1: Why school buses are that unmistakable glossy yellow
The color officially known as “National School Bus Glossy Yellow” was chosen for visibility above all else. Studies in the 1930s found that this specific shade is highly noticeable in peripheral vision and during dawn and dusk, when children are often traveling. Its contrast with black lettering also maximizes readability. Over time, it became not just practical, but instantly recognizable across the country.
