CDL Class B Quiz Questions and
Answers 100% Pass
What should you do if your vehicle starts skidding?
If your vehicle starts skidding, take your foot off the accelerator and steer in the direction of
the skid until you regain control.
Why is it important to check tire tread depth regular...
CDL Class B Quiz Questions and
Answers 100% Pass
What should you do if your vehicle starts skidding?
✔✔ If your vehicle starts skidding, take your foot off the accelerator and steer in the direction of
the skid until you regain control.
Why is it important to check tire tread depth regularly?
✔✔ Checking tire tread depth is crucial because worn tires reduce traction, especially in wet or
icy conditions, increasing the risk of a skid or blowout.
What should you do before entering a curve in a commercial vehicle?
✔✔ Before entering a curve, slow down to a safe speed, as trucks are more prone to rollovers
when turning at high speeds.
How does overloading a commercial vehicle affect its handling?
✔✔ Overloading makes the vehicle harder to control, increases braking distance, and can lead to
mechanical failure.
1
,What is the safest way to descend a steep grade in a commercial vehicle?
✔✔ Use a low gear and the engine brake to control your speed while descending a steep grade,
avoiding heavy use of the service brakes.
Why is it important to check your blind spots frequently?
✔✔ Checking blind spots frequently helps avoid collisions with smaller vehicles that may be
hidden from your mirrors.
What is the purpose of the suspension system in a commercial vehicle?
✔✔ The suspension system supports the weight of the vehicle, absorbs road shocks, and helps
maintain control while driving.
How should you position your vehicle when making a right turn in a commercial truck?
✔✔ Position your vehicle in the outer part of the lane to avoid hitting the curb or other obstacles
when making a right turn.
Why is maintaining a proper following distance important in a commercial vehicle?
✔✔ Maintaining a proper following distance gives you enough time to react to sudden stops or
emergencies, preventing collisions.
2
, What is the function of the service brakes in a commercial vehicle?
✔✔ Service brakes are used to slow down or stop the vehicle during normal driving conditions.
What should you do if you have to park on the side of the road in a commercial vehicle?
✔✔ Turn on your hazard lights, place warning triangles behind your vehicle, and park as far off
the road as possible to ensure safety.
Why is it important to stay well-hydrated while driving long distances?
✔✔ Staying hydrated helps you stay alert and focused, reducing the risk of fatigue while driving
long distances.
What is the primary purpose of a pre-trip inspection?
✔✔ The pre-trip inspection ensures the vehicle is safe to drive by checking for any mechanical
or safety issues.
How often should you check your mirrors while driving a commercial vehicle?
✔✔ You should check your mirrors frequently, every 5 to 8 seconds, to stay aware of your
surroundings and blind spots.
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