Alaska CDL Combination Test (AK) 2026

4.9 out of 5 (46 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Preparing for your Commercial Driver's License (CDL) combination vehicles endorsement is a crucial step toward a successful career on Alaskan roads. Our comprehensive CDL combination practice test is designed to help you master all necessary skills and knowledge areas. By taking the Alaska driving test practice, you'll cover key topics such as coupling and uncoupling procedures, pre-trip inspections, driving techniques, backing and maneuvering, and air brake systems. This practice test consists of 20 multiple-choice questions, and you'll need at least 16 correct answers to pass. Understanding the increased stopping distances required for combination vehicles is vital. The greater weight of these vehicles demands more careful handling and an awareness of the unique challenges they present. The Alaska permit test practice ensures you grasp these critical safety aspects, making you more confident and prepared for real-world driving scenarios. One of the significant benefits of the Alaska combination CDL practice test is its focus on identifying any gaps in your knowledge. By pinpointing these areas, you can target your studies more effectively, ensuring you're well-prepared for the actual CDL test. The Alaska permit practice test format mimics the real test, using multiple-choice and true or false questions. This familiarizes you with the process of eliminating incorrect answers and honing in on the correct ones. Our Alaska permit test practice can be taken multiple times, allowing you to reinforce your understanding and improve your score with each attempt. This repeated exposure to the material not only boosts your confidence but also ensures you retain the information better. You can take the CDL combination test as many times as needed to achieve a passing score and feel comfortable with the questions before moving on to other CDL practice tests available on our website. By dedicating time to the Alaska combination CDL test, you're investing in your future as a safe and knowledgeable driver. Our CDL combination practice test is an invaluable tool in your preparation, ensuring you're ready to tackle the challenges of the road and earn your endorsement with confidence.
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Sample Alaska Combination Test Questions

Question 1

Before positioning a tractor beneath a semitrailer, what is the first coupling check?

  1. A. Connect both trailer air lines
  2. B. Inspect the fifth wheel and kingpin
  3. C. Back completely under the trailer
  4. D. Raise the trailer supports

Correct answer: B. – Inspect the fifth wheel and kingpin

The Alaska manual’s coupling sequence begins with an inspection of the fifth wheel. Check for missing or damaged parts, secure mounting, required lubrication, open jaws, and the proper position of the locking mechanism. A sliding fifth wheel must be locked, and the trailer kingpin must not be bent or broken.

Source: Alaska Commercial Driver License Manual — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 2

Why does a bobtail tractor require extra caution when stopping?

  1. A. Its steering system cannot operate without a trailer
  2. B. Its lighter drive axles provide less traction and may increase stopping distance
  3. C. Its fuel system delivers excessive power
  4. D. Its fifth wheel makes it unusually top-heavy

Correct answer: B. – Its lighter drive axles provide less traction and may increase stopping distance

A bobtail tractor is lightly loaded compared with a tractor pulling a loaded trailer. Empty commercial vehicles have less tire traction, even though their brakes and suspension are designed to perform best when loaded. Reduced traction can increase stopping distance and make smooth braking more difficult.

Source: Alaska Commercial Driver License Manual — § 2.6.1, “Stopping Distance”

Question 3

After coupling, it is safe to drive once the landing gear is barely clear of the pavement. True or false?

  1. A. True
  2. B. False

Correct answer: B. – False

The Alaska manual instructs drivers to raise the landing gear completely before driving. Partially raised landing gear can catch on railroad tracks, uneven surfaces, or other obstacles. Once the supports are fully raised, secure the crank handle and confirm that the tractor frame and tires have adequate clearance.

Source: Alaska Commercial Driver License Manual — § 6.4.1, “Coupling Tractor-Semitrailers”

Question 4

Which statement correctly describes the trailer emergency air line?

  1. A. It operates only the tractor’s parking brakes
  2. B. It supplies cooling air to the tractor cab
  3. C. It charges the trailer tanks and controls the trailer emergency brakes
  4. D. It carries only electrical brake signals

Correct answer: C. – It charges the trailer tanks and controls the trailer emergency brakes

The emergency line supplies air to the trailer’s air reservoirs and controls its emergency brakes. A loss of pressure in this line causes the trailer emergency brakes to apply. The line is commonly identified by red hoses or couplers to distinguish it from the blue service line.

Source: Alaska Commercial Driver License Manual — § 6.2.4, “Trailer Air-lines”

Question 5

What should a driver remember about trailers and converter dollies built before 1975?

  1. A. They may not have spring brakes
  2. B. They are required to have electronic stability control
  3. C. They require a special type of glad-hand adapter
  4. D. They must have factory-installed ABS

Correct answer: A. – They may not have spring brakes

The Alaska manual notes that trailers and converter dollies built before 1975 were not required to have spring brakes. Units without spring brakes use stored air for emergency braking and do not have a spring-operated parking brake. Because stored air can eventually leak away, their wheels must be chocked when parked.

Source: Alaska Commercial Driver License Manual — § 6.2.8, “Trailer Service, Parking and Emergency Brakes”

Question 6

When backing a trailer, the driver should set up to back toward the driver’s side whenever possible. True or false?

  1. A. True
  2. B. False

Correct answer: A. – True

Driver-side backing provides a better view through the side window and mirrors than backing toward the passenger side. Begin from a position that allows a safe path, back slowly, and check both mirrors frequently. Use a helper whenever one is available and stop if the helper disappears from view.

Source: Alaska Commercial Driver License Manual — § 2.2.4, “Backing Safely”

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