Hawaii CDL General Knowledge Practice Test (HI) 2

4.9 out of 5 (47 votes)
80% Passing score
20 Questions
4 Mistakes allowed
Aloha! Welcome to your second Hawaii CDL General Knowledge Practice Test. As a stepping stone in your quest for a CDL in 2026, this test is a vital tool for your success. Designed to mimic the real Hawaii CDL test, it includes 20 thought-provoking questions covering a wide array of topics. To pass, you'll need to correctly answer at least 16 questions. Our Hawaii general knowledge CDL practice test is more than just a quiz; it's a comprehensive learning experience. Each question is meticulously crafted based on the 2026 official CDL driver's manual, ensuring you study the most current and relevant information. This manual is the cornerstone of the real CDL DMV written test, so if it's not in the manual, you won't find it on our test either. Our team of professional driving instructors, with a wealth of teaching experience and thousands of successful driver's license graduates under their belt, has painstakingly written and reviewed each question. This ensures that you're not just memorizing answers but truly understanding the principles behind them. From pre-trip vehicle inspection to mastering gear shifts, from understanding road communication to speed control, and from tackling challenging terrains to drug and alcohol awareness, this online Hawaii CDL practice test is a comprehensive guide to all you need to know, regardless of whether you're aiming for a Class A or Class B license. Remember, this Hawaii DMV general knowledge practice test isn't just about passing. It's about building a solid foundation of knowledge and skills that will serve you throughout your driving career. It's an invaluable tool for those seeking to supplement their license with various endorsements as well. So, dive in, explore each DMV written test question, and use our helpful study aids whenever you're in doubt. This isn't just a regular CDL practice test; it's your roadmap to becoming a skilled, knowledgeable, and responsible CDL holder in Hawaii in 2026!
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Sample Hawaii CDL Test Questions - General Knowledge

Question 1

Why can a damaged exhaust system create an immediate danger for the driver?

  1. A The exhaust noise will permanently damage the driver’s hearing
  2. B Poisonous exhaust fumes may enter the cab or sleeper berth
  3. C The exhaust will immediately damage the roadway
  4. D The smoke will damage vehicles traveling nearby

Correct answer: B – Poisonous exhaust fumes may enter the cab or sleeper berth

Broken, missing, or leaking exhaust components can allow poisonous fumes to enter the cab or sleeper berth. An inspection should identify damaged pipes, mufflers, stacks, brackets, and leaking connections. Exhaust components must also be kept from rubbing against fuel-system parts, tires, or other moving components.

Source: Hawaii Commercial Driver License Manual (June 2025) — § 2.1.3, “Exhaust System Defects”

Question 2

Which procedure correctly checks hydraulic brakes for leaks?

  1. A Skip the test because hydraulic brakes cannot leak
  2. B Drive slowly and check only whether the vehicle stops
  3. C Start the engine, pump the pedal three times, then hold firm pressure for five seconds and watch for movement
  4. D Press the brake and accelerator pedals together to see whether the vehicle moves

Correct answer: C – Start the engine, pump the pedal three times, then hold firm pressure for five seconds and watch for movement

The Hawaii CDL manual instructs the driver to start the engine, pump the hydraulic brake pedal three times, and then hold firm pressure for five seconds. The pedal should not move during the test. Movement may indicate a leak or another problem that must be repaired before the vehicle is driven.

Source: Hawaii Commercial Driver License Manual (June 2025) — § 2.1.4, “Step 7: Start the Engine and Check—Test for Hydraulic Leaks”

Question 3

A NARROW BRIDGE warning sign means that:

This sign warns drivers that _____________.
  1. A The bridge roadway is narrower than the approach roadway
  2. B The bridge structure is unstable
  3. C Drivers must always stop and yield to oncoming traffic
  4. D Drivers should accelerate before entering the bridge

Correct answer: A – The bridge roadway is narrower than the approach roadway

The NARROW BRIDGE sign warns that the bridge or culvert has limited roadway width compared with the approaching travel lanes. It does not by itself indicate structural instability or require every driver to stop. Drivers should recognize the reduced clearance and approach with appropriate caution.

Source: Manual on Uniform Traffic Control Devices, 11th ed., Rev. 1 — § 2C.18, “NARROW BRIDGE and NARROW UNDERPASS Signs (W5-2 and W5-2a)”

Question 4

An 8-foot article on a flatbed is not blocked or positioned to prevent forward movement. What is the minimum number of tie-downs required?

  1. A 1
  2. B 2
  3. C 3
  4. D 4

Correct answer: B – 2

Federal cargo-securement rules require at least two tie-downs for an unblocked article that is longer than 5 feet but no longer than 10 feet, regardless of its weight. Different minimums apply to articles that are shorter, longer, or blocked against forward movement. Tie-downs must also satisfy the applicable strength and securement requirements.

Source: 49 CFR § 393.110(a), (b)(2)(ii) — Additional requirements for determining the minimum number of tiedowns

Question 5

A Hawaii CDL holder is convicted of speeding while driving a personal car. When must the driver notify the employer?

  1. A Within 74 hours
  2. B Within 3 days
  3. C Within 30 days
  4. D Only if the violation occurred in a commercial vehicle

Correct answer: C – Within 30 days

Federal CDL rules require the driver to notify the current employer within 30 days after a conviction for a traffic-control violation other than a parking violation. The requirement applies even when the violation occurred in a personal vehicle. A separate, shorter notice period applies when a license is suspended, revoked, canceled, or the driver is disqualified.

Source: Hawaii Commercial Driver License Manual (June 2025) — § 1.4, “Other CDL Rules”, 49 CFR § 383.31 — Notification of convictions for driver violations

Question 6

Which conditions are examples of tire problems that must be identified during an inspection?

  1. A Too much or too little air pressure
  2. B Uneven wear or tread separation
  3. C Cuts or other tire damage
  4. D All of the above

Correct answer: D – All of the above

Commercial-vehicle tire problems include improper air pressure, excessive or uneven wear, tread separation, and cuts or other damage. Drivers should also look for exposed fabric, damaged valve stems, mismatched tires, and dual tires touching each other or vehicle parts. Any condition that makes a tire unsafe should be corrected before operation.

Source: Hawaii Commercial Driver License Manual (June 2025) — § 2.1.3, “Tire Problems”

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