Commercial Driver's License (CDL) General Knowledge

Question 1

A fully loaded rig is _________ times more likely to roll over in a crash than an empty rig.

5 10 15 20

Correct Answer:

Question 2

When following behind other vehicles, you should follow

At least one second for every 20 feet of your vehicle length At least two seconds for every 10 feet of your vehicle length At least two seconds for every 10 feet of your vehicle length, plus one second if going over 50 MPH At least one second for every 10 feet of your vehicle length, plus one second if going over 40 MPH

Correct Answer:

At least one second for every 10 feet of your vehicle length, plus one second if going over 40 MPH

Question 3

A trailer jackknife is likely to happen when

The vehicle has a high center of gravity The wheels of the trailer lock up The front drive wheels lose traction There is too much weight on the steering axles

Correct Answer:

The wheels of the trailer lock up

Question 4

What is the fastest and best way to recognize that your trailer has started to skid?

Feeling your steering wheel shake Listening for the distinctive skidding sound Seeing it in your mirrors Feeling your vehicle pull to the side

Correct Answer:

Seeing it in your mirrors

Question 5

If your trailer begins to skid, you should

Maintain light pressure on your brakes until the trailer straightens out Release your brakes until the trailer wheels grip the road again Turn the steering wheel in the direction of the skid Apply to the trailer hand brake to straighten out the trailer

Correct Answer:

Release your brakes until the trailer wheels grip the road again

Question 1 of 49

Exam overview

About this Exam

Prepare with the Commercial Driver's License (CDL) General Knowledge practice quiz. This question bank includes 49 questions covering trailer, pressure, brake, vehicle, and brakes. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Commercial Driver's License (CDL) General Knowledge

This practice set contains 49 questions from the matching question bank and focuses on trailer, pressure, brake, vehicle, and brakes. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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About this Exam

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Commercial Driver's License (CDL) General Knowledge

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