What signals that a school bus is about to stop?

When a school bus is preparing to stop, it activates its yellow lights. This action serves as a warning to other motorists that the bus is about to make a stop to pick up or drop off students. The yellow lights are a crucial safety feature designed to alert drivers to slow down and be prepared to stop, as children may be nearby and getting on or off the bus.

The activation of these lights is a well-established protocol to ensure the safety of all passengers, particularly children, who may not always be visible to drivers of other vehicles. The yellow lights signify that the bus is not yet stopped but is in the process of preparing to do so, allowing adequate time for other drivers to react appropriately. This is part of the broader set of safety regulations governing school bus operations to protect students during their daily commute.