CDL Tanker Endorsement Practice Exam

What is the most important thing to remember during emergency braking?

1. You should always pump the brakes

2. If the wheels are skidding, control of the vehicle is lost

3. Use the emergency brake only

4. Brake as hard as possible at all times

The correct answer is: If the wheels are skidding, control of the vehicle is lost

The focus during emergency braking is on the concept that if the wheels are skidding, the driver has lost control of the vehicle. This is critical because skidding means that the tires are no longer making effective contact with the road surface, which leads to a loss of steering control and the inability to maneuver away from hazards. Understanding this principle encourages drivers to be mindful of how they apply the brakes. In an emergency, it's vital to avoid techniques that would cause the wheels to lock up, such as slamming the brakes without considering road conditions. Instead, drivers should aim for controlled braking that maximizes grip and maintains vehicle maneuverability—key elements necessary for safely navigating through a potentially hazardous situation. Maintaining control of the vehicle is paramount in emergencies, and being aware that skidding equates to losing that control is a crucial aspect for the safety of the driver, passengers, and others on the road.