South Dakota CDL Combination Test 1

Question 1

Combination vehicles are usually:

Easier to drive than single commercial vehicles. Lighter than single commercial vehicles. More difficult to drive than single commercial vehicles.

Correct Answer:

More difficult to drive than single commercial vehicles.

Question 2

What is a bobtail?

A tractor without a semi-trailer A tractor with two semi-trailers A tractor that goes faster than the speed limit A tractor that goes slower than the speed limit

Correct Answer:

A tractor without a semi-trailer

Question 3

If unsure if a trailer has an Anti-Lock Braking System (ABS), you can:

Look under the trailer for wheel speed sensors coming from the back of the brakes. Remove a tire and look for the ABS sensor on the axle. Assume it does have ABS.

Correct Answer:

Look under the trailer for wheel speed sensors coming from the back of the brakes.

Question 4

Which of the following types of vehicles is most prone to the “crack-the-whip" effect?

An automobile A three-axle tractor A bobtail tractor A triple combination

Correct Answer:

A triple combination

Question 5

Fully-loaded rigs:

Are less likely to roll over than empty rigs. Are more likely to roll over than empty rigs. Are just as likely to roll over as empty rigs. Should not be driven.

Correct Answer:

Are more likely to roll over than empty rigs.

Question 1 of 20

Exam overview

About this Exam

Prepare with the South Dakota CDL Combination Test 1 practice quiz. This question bank includes 20 questions covering driving, vehicle, combination, trailer, and braking. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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South Dakota CDL Combination Test 1

This practice set contains 20 questions from the matching question bank and focuses on driving, vehicle, combination, trailer, and braking. 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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South Dakota CDL Combination Test 1

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