But the standard that made Cyr famous was "school bus yellow ... Solomon says that red colors are not only far less visible during the day (see the chart above), but they virtually disappear ...

The group came up with the "Minimum standards for school buses," a set of 44 rules all buses should adhere to. This included details like length, aisle width, and even the iconic yellow color.

School buses have an enviable safety record, thanks in part to their bright yellow color. David L. Ryan/The Boston Globe via Getty Images ...