Which button is used to engage the parking brake in a bus?

The parking brake in a bus is typically engaged using the yellow button. This color coding is standard in many school buses to ensure that drivers can quickly identify and operate critical controls. The yellow button allows the driver to safely secure the vehicle in place when it is parked, preventing any unintended movement.

Engaging the parking brake is crucial for safety, especially when loading or unloading passengers, as it keeps the bus stationary and secure. Using the correct button, which is clearly labeled and color-coded, helps in maintaining focus and avoiding confusion with other vehicle controls.