What purpose do the flashing amber lights under a school warning sign serve?

Answer: B — To warn drivers to slow down

The flashing amber lights under a school warning sign serve to warn drivers to slow down. These lights are specifically designed to alert drivers that they are approaching a school zone, an area where children are likely to be present, either during school hours or when they are arriving or leaving school. The illumination of these lights signifies that extra caution is required, as children may unexpectedly cross the road or be in close proximity to vehicles. The presence of the flashing lights emphasizes the need for drivers to reduce their speed and remain vigilant, enhancing the safety of schoolchildren in these high-traffic areas. In many cases, drivers are regulated by law to adhere to decreased speed limits when these lights are activated. Understanding this purpose is vital for ensuring the safety of young pedestrians and helping to prevent accidents in school zones.