Georgia Commercial Driver License Practice Test

Which braking system is equipped to function alongside ABS?

1. Only the emergency brake

2. The anti-lock system exclusively

3. The conventional braking system

4. The parking brake

The correct answer is: The conventional braking system

The correct response indicates that the conventional braking system can operate alongside the anti-lock braking system (ABS). ABS is designed to prevent the wheels from locking up during hard braking, which allows the driver to maintain steering control and avoid skidding. This is particularly important in commercial vehicles, which are heavier and can require more distance to stop. The conventional braking system, which consists of the standard hydraulic brakes that engage when the driver presses the brake pedal, works in conjunction with ABS. When ABS is activated, it modulates the brake pressure applied through the conventional system to optimize braking performance without losing traction. While the emergency brake, anti-lock braking system itself, and parking brake each have specific functions and limitations, they either do not function in conjunction with ABS or are not primarily designed to work together with the braking system during regular driving scenarios. The emergency brake and parking brake are more for securing the vehicle when parked, while the anti-lock system is not a standalone braking mechanism but a feature that enhances the conventional system's performance by preventing wheel lock.