Hawaii CDL Combination Practice Test (HI) 2

5 out of 5 (33 votes)
80% Passing score
20 Questions
4 Mistakes allowed
As a Hawaii resident, preparing for your Commercial Driver's License (CDL) test can feel overwhelming. Fortunately, our Hawaii combination CDL practice test is here to make your preparation smoother and more effective. This second CDL combination practice test on our site features 20 multiple-choice questions that cover crucial topics such as inspection procedures, safe driving practices, and air brake systems. To pass, you'll need to answer at least 16 questions correctly. This Hawaii DMV practice test is designed to reflect the real permit test, both in format and content. By working through these questions, you'll become familiar with the types of questions you will encounter on the actual test. This familiarity can significantly reduce test-day anxiety and boost your confidence. Topics include critical areas such as the dangers of jackknifing, which is when the trailer swings out of alignment with the tractor. Understanding how to prevent this hazardous situation through smooth braking and careful handling is essential for safe driving. Our Hawaii permit test practice is easily accessible online through both desktop and mobile platforms, ensuring you can study whenever and wherever it's convenient for you. This flexibility is particularly beneficial given Hawaii's unique driving conditions. For instance, navigating the winding roads of the Hana Highway on Maui or dealing with the variable weather conditions on the Big Island requires specialized knowledge and skills that our CDL combination practice test can help you master. While the Hawaii combination vehicle test does not replace a state-certified driver's education or Entry-Level Driver Training (ELDT) course, it serves as an excellent supplementary tool. Pairing this practice permit test with your formal education will provide a comprehensive understanding of the materials, helping you feel well-prepared for the real test. Get started with our Hawaii combination CDL practice test today, and take a confident step towards earning your commercial driver's license. By practicing with these realistic and challenging questions, you'll be well on your way to mastering the skills needed to drive safely and effectively on Hawaii's diverse roadways.
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Sample Hawaii Combination Test Questions

Question 1

What does off-tracking mean when a combination vehicle turns?

  1. A The driver leaves the roadway while completing the turn
  2. B The vehicle turns and then immediately curves in the opposite direction
  3. C The rear wheels follow a different path from the front wheels
  4. D The vehicle travels on an unpaved road

Correct answer: C – The rear wheels follow a different path from the front wheels

Off-tracking occurs because the rear wheels follow a different path from the front wheels while the vehicle rounds a corner. Longer vehicles off-track more, and a trailer’s rear wheels generally track farther inward than the powered unit’s rear wheels. The driver must allow enough turning space to keep the rear wheels from striking curbs or other objects.

Source: Hawaii CDL Driver’s Manual — § 6.1.6, “Turn Wide”

Question 2

If a braking skid causes the trailer to swing toward a jackknife, what should you do?

  1. A Apply the trailer hand brake
  2. B Increase speed immediately
  3. C Make a sudden turn away from the trailer
  4. D Release the brakes to regain traction

Correct answer: D – Release the brakes to regain traction

Stop braking and allow the trailer wheels to regain traction. Once the wheels begin gripping the road, the trailer should start following the tractor and straightening. Applying the trailer hand brake is the wrong response because it can keep the trailer wheels locked and worsen the skid.

Source: Hawaii CDL Driver’s Manual — § 6.1.5, “Prevent Trailer Skids”

Question 3

Before driving a coupled tractor-semitrailer, it is sufficient to raise the landing gear only slightly above the pavement.

  1. A TRUE
  2. B FALSE

Correct answer: B – FALSE

The landing gear must be raised completely before driving, not merely lifted off the pavement. Partially raised landing gear may catch on railroad tracks or other obstructions. After the supports are fully raised, secure the crank handle and check that adequate clearance exists between the tractor frame and the landing gear.

Source: Hawaii CDL Driver’s Manual — § 6.4.1, “Step 15. Raise Front Trailer Supports (Landing Gear)”

Question 4

What is the first listed step when coupling a tractor to a semitrailer?

  1. A Connect the air lines
  2. B Inspect the fifth wheel
  3. C Back completely under the trailer
  4. D Raise the trailer landing gear

Correct answer: B – Inspect the fifth wheel

Start by inspecting the fifth wheel for damaged or missing parts and a secure mounting. Verify that the plate is lubricated as required and correctly positioned, with the jaws open and the unlocking handle ready to lock. If the fifth wheel slides, also make sure it is locked in position before coupling.

Source: Hawaii CDL Driver’s Manual — § 6.4.1, “Step 1. Inspect Fifth Wheel”

Question 5

After uncoupling a semitrailer, which practices are acceptable for protecting disconnected lines and cables?

  1. A Hang the electrical cable with its plug pointing down
  2. B Attach the glad hands to dummy couplers
  3. C Join compatible glad hands together if dummy couplers are unavailable
  4. D All three practices are acceptable

Correct answer: D – All three practices are acceptable

After disconnecting the trailer, attach the glad hands to the tractor’s dummy couplers when available. If no dummy couplers are provided and the couplings are compatible, the glad hands may be joined together. Hang the electrical cable with its plug down to keep moisture out, and support all lines where they will not be damaged while the tractor is driven.

Source: Hawaii CDL Driver’s Manual — § 6.4.2, “Step 5. Disconnect Air-lines and Electrical Cable”

Question 6

What is the main safety benefit of using a helper while backing a trailer?

  1. A The helper can watch blind spots and warn of obstacles
  2. B The helper guarantees that backing will take less time
  3. C The helper can operate the vehicle’s brakes from outside
  4. D The helper can adjust the mirrors while the vehicle moves

Correct answer: A – The helper can watch blind spots and warn of obstacles

The Hawaii CDL Driver’s Manual recommends using a helper when one is available because commercial vehicles have blind spots the driver cannot see. The helper should stand near the rear where the driver can see them. Before backing, the driver and helper should agree on clear hand signals, especially a signal meaning stop.

Source: Hawaii CDL Driver’s Manual — § 2.2.4, “Backing Safely”

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