Georgia Commercial Driver License Practice Test

Under what conditions should you avoid using the parking brake?

1. If your brakes are too cold

2. If your brakes are too hot or wet

3. If your brakes are dry

4. If your brakes are newly installed

The correct answer is: If your brakes are too hot or wet

The correct answer is based on the understanding of how brake systems function and the effects of temperature and moisture on mechanical components. Using the parking brake when your brakes are too hot may cause the brake components to warp or seize, potentially leading to malfunction. In wet conditions, the moisture can cause the brake pads and discs to stick together, increasing the risk of rust or corrosion. Therefore, it's especially important to avoid using the parking brake when the brakes are in these detrimental conditions to ensure the longevity and reliability of the braking system. Understanding the condition of your brakes is crucial; dry brakes typically function well when engaged, newly installed brakes should be handled according to the manufacturer's instructions, and cold brakes generally do not present the same risks as hot or wet brakes. The implications of using the parking brake under unsuitable conditions can lead to serious mechanical issues and safety hazards on the road.