What action must the driver perform while checking the signal lights?

• A. Use hand signals
• B. Lean out of the driver's window
• C. Visualize in a camera
• D. Close both eyes

Answer: (B)

During a pre-trip inspection, it is essential for the driver to perform a thorough check of the signal lights to ensure they are functioning correctly. Leaning out of the driver's window allows for a direct line of sight to check the front and rear signal lights as they flash. This action enables the driver to visually confirm that each light is operating—illuminating when activated and turning off when not in use.

While other methods like using hand signals or relying on a camera might seem feasible, they do not provide the same level of immediate visual confirmation of the lights' performance. Closing one's eyes would obviously be counterproductive and does not contribute to any aspect of safety or inspection. Hence, leaning out of the window is the most effective way to ensure that signal lights are functioning properly before operating the school bus.