CDL · Emergencies
In an emergency stop, what is the most critical fact to keep in mind?
Correct answer: You lose control of the vehicle whenever its wheels are skidding.
Answer options
- AShutting off the steering-axle brakes helps the vehicle stay straight.
- BYou must always downshift before you start to brake.
- CYou lose control of the vehicle whenever its wheels are skidding. Correct
Why
Locked wheels slide instead of rolling, so the tires can no longer steer; that is why controlled braking avoids lockup and stab braking lets up as soon as the wheels lock. Front brakes add stopping power and should stay connected, and downshifting is not a required first step before emergency braking.
About this question
Topic: Emergencies License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of Skids and Emergency Braking (16 questions). Take the full set and check your score.
Practice Skids and Emergency BrakingMore questions from Skids and Emergency Braking
- In a front-wheel skid, how will a straight vehicle with no trailer or articulation behave?
- What is the most effective way to recover from any kind of skid?
- When a skid begins, what is the main goal of your actions?
- Which of these accurately describes stab braking?
- Your tanker's front tires lose their grip and begin to slide. What is most likely to happen?
- Which description of controlled braking is accurate?
- Your drive wheels have locked under braking and the vehicle is sliding. What sequence of actions regains control?
- What is the most effective way to recover from a skid?
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