answers: chrome yellow
context: Paints participated. Dr. Cyr's conference, funded by a $5,000 grant from the Rockefeller Foundation, was also a landmark event inasmuch as it included transportation officials from each of the then-48 states, as well as specialists from school bus manufacturing and paint companies. The color was adopted by the National Bureau of Standards (now the National Institute of Standards and Technology) as Federal Standard No. 595a, Color 13432. The conference approach to school bus safety, as well as the yellow color, have endured into the 21st century. Dr. Cyr became known as the "Father of the Yellow School Bus." The yellow </s> School bus yellow School bus yellow is a color that was specifically formulated for use on school buses in North America 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. The color was chosen because it attracts attention and is noticed quickly in peripheral vision, faster than any other color. Scientists describe this as follows: "Lateral peripheral vision for detecting yellows is 1.24 times greater than for </s> arm is perpendicular to the side of the bus, with the top edge of the sign parallel to and within of a horizontal plane tangent to the bottom edge of the first passenger window frame behind the driver's window, and that the vertical center of the stop signal arm must be no more than from the side of the bus. One stop signal arm is required; a second may also be installed. The second stop arm, when it is present, is usually mounted near the rear of the bus, and is not permitted to bear a or any other legend
question: what color is a school bus yellow or orange