What is the primary purpose of the school bus yellow flashing lights?

The primary purpose of the school bus yellow flashing lights is to warn other drivers that the bus is preparing to stop. This system of lights serves as a critical safety measure. When the yellow lights are activated, it is a signal that the bus will soon engage its red lights, indicating that students are likely to be boarding or disembarking. This warning gives other vehicles time to slow down and prepare to stop, ensuring a safer environment for children as they enter or exit the bus. Understanding this function is vital for all drivers to promote the safety of students who rely on school transportation.