What action should a driver take if the service brakes stop working?

Using the emergency brakes is the appropriate action when service brakes fail. Emergency brakes, also known as parking brakes, are specifically designed to bring a vehicle to a stop if the main braking system malfunctions. They typically engage on the rear wheels and can provide enough stopping power to slow down the vehicle safely, allowing the driver to regain control or stop the bus in a controlled manner.

Utilizing this system is crucial in emergency situations, as it minimizes the risk of accidents and injuries that could result from a complete brake failure. Knowing how to use emergency brakes effectively is an essential skill for school bus drivers, as it can make the difference in safely stopping the vehicle when faced with brake system issues.

The other options do not address the serious nature of brake failure appropriately. Driving faster could lead to a complete loss of control. Calling for help while continuing to drive is not safe, potentially putting passengers at risk. Pulling over and shutting off the engine is not an effective method of stopping the vehicle and could place it in a hazardous situation on the road. It's essential for drivers to be prepared and know the proper steps to take in the event of brake failure, making the use of emergency brakes the best response.