CDL General Knowledge Test 9 – Classic Mode

This is CDL General Knowledge Test 9 in our original Classic Mode. Simply click in your answer to each CDL practice test question. When you’re finished, check your score and results. You can reset the test and retake it as needed.

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1. You are starting your vehicle in motion from a stop. As you apply power to the drive wheels, they start to spin. You should:

A Take your foot off the accelerator and apply the brakes.
B Press harder on the accelerator.
C Take your foot off the accelerator.
D Try a lower gear.

2. You should use your mirrors to check:

A Traffic gaps before you merge.
B The condition of the tires and cargo.
C Where the rear of your vehicle is while you make turns.
D All of the above.

3. The proper way to hold a steering wheel is at clock positions ____ and ____.

A 6 and 12
B 3 and 9
C 4:30 and 7:30
D 1:30 and 10:30

4. Cargo inspections:

A Should be performed after every break you take while driving.
B Are only needed if hazardous materials are being hauled
C Not the responsibility of the driver.
D Should be performed every 6 hours or 300 miles.

5. Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied?

A Lack of braking power
B Trailer jackknife
C Wheel lockup
D All of the above

6. How do you test hydraulic brakes for leaks?

A Measure the free play in the pedal with a ruler.
B With the vehicle stopped, pump the pedal three times, apply firm pressure for 5 seconds, then hold and see if the pedal moves.
C Step on the brake pedal and the accelerator at the same time and see if the vehicle moves.
D Move the vehicle slowly and see if it stops when the brake is applied.

7. Which of these is a good rule to follow when driving at night.

A Keep your instrument lights bright.
B Look directly at oncoming headlights only briefly.
C Keep your speed slow enough that you can stop within the range of your headlights.
D Wear sun glasses

8. A vehicle is loaded with very little weight on the drive axle. What may result?

A Damage to drive axle tires.
B A need to disconnect the steering axle brakes.
C Better handling.
D Poor traction

9. The key principle in balancing cargo weight is to keep the load:

A On the side away from most traffic
B Balanced in the cargo area
C To the front
D To the rear

10. Which of these statements about using mirrors is true?

A There are blind spots that your mirrors cannot show you.
B You should check your mirrors twice for a lane change.
C You should look at a mirror for several seconds at a time.
D Convex mirrors make things look closer than they really are.

End of Test #9

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