What does a flashing yellow light mean on a school bus?

The correct answer indicates that a flashing yellow light on a school bus serves as a warning to other drivers that the bus is preparing to stop. This signal not only alerts drivers to the potential need to slow down but also prepares them for the possibility of students embarking or disembarking from the bus. Understanding this light is crucial for maintaining safety around school buses, as it emphasizes the need for vigilance when near these vehicles, especially in school zones or residential areas where children may be present.

While other signals such as flashing red lights would indicate a need to stop, the flashing yellow light specifically communicates caution rather than an immediate stop, which distinguishes its purpose and use in ensuring the safety of students.