HI CDL Practice Tests

• Test Format: Computer-based at Hawaii DMV offices
• General Knowledge Test: 50 questions, need 80% to pass
• Permit Validity: 180 days (renewable once for another 180 days)
• Waiting Period: 14 days before skills test after obtaining permit
• Languages: English only
• Fees:
• $30 application fee for permit
• $5 fee per year for license
• $15 fee for general knowledge test
• $5 fee for each special knowledge test
• $50 fee to schedule skills test appointment

IMPORTANT: All CDL applicants in Hawaii must be at least 21 years old and provide a current Medical Examiner's Certificate (Form MCSA-5876) before receiving a CDL.

The Hawaii CDL knowledge test is a test of your knowledge of commercial driving regulations, safety procedures and technical aspects of operating commercial vehicles. You must pass this test to get a Commercial Learner's Permit (CLP) which you must have before you can take the skills test for a full CDL.

The test is given electronically at Hawaii DMV offices. The questions test your knowledge of federal regulations and Hawaii specific rules so you are prepared to operate commercial vehicles in Hawaii and across state lines if necessary.

You need to take the Hawaii CDL knowledge test in the following scenarios:

• First time CDL applicants
• Current CDL holders adding new endorsements
• Drivers upgrading their CDL class (e.g. from Class B to Class A)
• Reinstating a CDL that has been expired for more than one year
• Transferring a CDL from another state and adding new endorsements

All applicants must take the general knowledge test. You will also need to take specific endorsement tests based on the type of commercial driving you will be doing, such as passenger transportation, school buses, hazardous materials or double/triple trailers.

The CDL knowledge test is an important safety measure in commercial transportation. It verifies that drivers have the necessary knowledge to operate large commercial vehicles safely, understand the regulations and can respond in emergency situations.

Commercial vehicles are big and heavy and can be dangerous if not operated properly. The damage they can cause in an accident makes proper preparation essential. The knowledge test is the first step in making sure drivers are ready for the big responsibility of commercial driving.

Hawaii's CDL testing program balances federal standards with state specific requirements. While following the Federal Motor Carrier Safety Administration's core standards to ensure national compatibility, Hawaii adds state specific elements relevant to local commercial driving conditions.

This way your Hawaii CDL will be recognized throughout the United States. The test covers general driving skills, vehicle systems, safety procedures and specialized operations based on the type of commercial driving you will be doing. When you pass you will be qualified to drive across state lines as long as you meet age and other interstate commerce requirements.

Hawaii CDL knowledge tests have a specific number of questions for each test category:

• General Knowledge: 50 questions
• Air Brakes: 25 questions
• Combination Vehicles: 20 questions
• Passenger Endorsement: 20 questions
• School Bus Endorsement: 20 questions
• Hazardous Materials Endorsement: 30 questions
• Tank Vehicles Endorsement: 20 questions
• Doubles/Triples Endorsement: 20 questions

All tests are multiple choice with 4 possible answers per question. The questions thoroughly test your understanding of safety procedures, technical vehicle knowledge and relevant regulations for each commercial driving category.

Sample question: When checking your trailer connection you should make sure that: A) The fifth wheel is tilted upward B) There is no space between the upper and lower fifth wheel C) The kingpin is bent D) The apron is sitting on top of the fifth wheel

Answer: B) There is no space between the upper and lower fifth wheel

Hawaii requires a minimum passing score of 80% on all CDL knowledge tests:

• General Knowledge: 40 out of 50 questions correct
• Air Brakes: 20 out of 25 questions correct
• Combination Vehicles: 16 out of 20 questions correct
• Passenger Endorsement: 16 out of 20 questions correct
• School Bus Endorsement: 16 out of 20 questions correct
• Hazardous Materials Endorsement: 24 out of 30 questions correct
• Tank Vehicles: 16 out of 20 questions correct
• Doubles/Triples: 16 out of 20 questions correct

Each test is scored separately. If you pass some tests but fail others, you'll only need to retake the tests you failed.

In Hawaii, the CDL knowledge test is only in English. This is because federal regulations require commercial drivers to be able to read and speak English sufficiently to:

• Read traffic signs and signals
• Communicate with officials and the public
• Complete required documents
• Read shipping papers and hazardous materials information

The English-only policy ensures all commercial drivers can communicate in emergency situations and understand critical safety information. There are no exceptions to this language requirement for CDL testing in Hawaii.

No study aids are allowed during the Hawaii CDL knowledge test. The testing centers prohibit:

• Notes or reference materials
• Cell phones and electronic devices
• CDL manuals or study guides
• Calculators (except when authorized)
• Any type of cheat sheet or unauthorized assistance

The testing area is monitored to ensure compliance. Using prohibited materials will result in test failure and possible restrictions on future testing.

Hawaii doesn't have a time limit for the CDL knowledge test. You have enough time to complete each test. Most people finish the general knowledge test in 60-90 minutes and endorsement tests in 30-45 minutes.

If you're taking multiple tests in one visit, plan your time accordingly. The DMV gives you enough time to complete all tests without rushing. If you have a documented learning disability or special need, accommodations may be available with proper documentation and advance notice.

Hawaii offers several different CDL knowledge tests depending on the class of license and endorsements you need:

• General Knowledge: Required for all CDL applicants
• Air Brakes: Required for vehicles with air brakes
• Combination Vehicles: Required for Class A licenses
• Passenger (P) Endorsement: For bus drivers
• School Bus (S) Endorsement: For school bus drivers
• Doubles/Triples (T) Endorsement: For multiple trailers
• Tank Vehicle (N) Endorsement: For liquid or gas tankers
• Hazardous Materials (H) Endorsement: For hazardous materials

Take only the tests relevant to your commercial driving plans. Each test focuses on specific knowledge for that operation type.

Sample question: When driving with air brakes, what is brake lag? A) Time for brakes to wear out B) Time for air to flow through lines when brake pedal is pressed C) Time to move foot from accelerator to brake D) Time to pull parking brake

Answer: B) Time for air to flow through lines when brake pedal is pressed

General Knowledge: Broad commercial driving topics including vehicle inspection, basic control, shifting, space management, night driving, emergency procedures, cargo handling, accident response, and fatigue awareness.

Air Brakes: Air brake system components, dual systems, inspection techniques, emergency stopping procedures, brake lag and fade.

Combination Vehicles: Coupling/uncoupling procedures, inspection requirements, handling characteristics, preventing rollovers and jackknifes, turning and backing.

Passenger (P): Passenger management, loading/unloading procedures, emergency exit protocols, accessibility requirements, challenging passenger situations.

School Bus (S): Student loading/unloading procedures, danger zones, emergency evacuations, railroad crossing requirements, student management techniques, special equipment operation.

Doubles/Triples (T): Multiple trailer coupling procedures, handling characteristics, inspection requirements, longer combination vehicle challenges.

Tank Vehicle (N): Liquid surge, tank types, weight distribution, loading/unloading procedures, partially filled tank braking.

Hazardous Materials (H): Hazmat classification, documentation, placarding, loading/unloading procedures, driving regulations, emergency response, security.

To prepare for the Hawaii CDL knowledge test:

• Study the Hawaii CDL manual thoroughly, focusing on your license class and endorsements
• Create a study schedule over several weeks instead of cramming
• Make flashcards for technical terms, component names and procedures
• Pay extra attention to air brakes and hazmat sections
• Understand the pre-trip inspection process completely
• Study the Hawaii regulations that differ from federal requirements
• Learn how vehicle systems work and their maintenance
• Take practice tests regularly to see your progress and weak areas
• Join study groups or find a study partner to discuss and quiz each other

Many applicants underestimate the technical knowledge required, especially for endorsements. Consistent study over time is much better than last minute cramming.

Yes! Our free Hawaii practice tests will help you prepare by:

• Simulating the actual test environment and question format
• Identifying knowledge gaps in your understanding
• Building confidence through repeated practice
• Tracking your progress over time
• Providing explanations for correct and incorrect answers
• Introducing you to question types similar to the actual test

Our practice tests cover all CDL test categories and are updated regularly to reflect current testing standards. Data shows that using quality practice tests increases first-time pass rates and saves you time and testing fees.

Tips for Hawaii CDL knowledge test:

• Start studying 2-3 weeks before your test date
• Focus on understanding not memorizing
• Use our practice tests to find and strengthen weak areas
• Get rest the night before your test
• Eat a good meal before testing to stay focused and energized
• Read each question completely before answering
• Pay attention to words like "always," "never," or "except"
• When unsure, choose the safest answer
• Review your answers before submitting if allowed
• Stay calm and focused during the test

Sample question: When should you use turn signals? A) Only when other vehicles are present B) At least 100 feet before turning C) Just as you begin to turn D) Only when changing lanes

Answer: B) At least 100 feet before turning

Our practice tests are similar to the Hawaii CDL knowledge test in:

• Question format and difficulty
• Content coverage
• Question style
• Technical terms

While actual questions will vary, our practice tests are designed to prepare you for the types of questions, format and content you'll see. Focus on mastering the concepts rather than memorizing the answers as the actual test draws from a large question bank and each test is unique.

Hawaii offers CDL knowledge testing at specific DMV offices throughout the state. Not all locations provide commercial testing so verification before you go is a must. Main testing locations are:

City and County of Honolulu:

• CDL Office, 897 2nd Street, Pearl City (Phone: 808-768-4165)
• Hours: 8:00 a.m. to 4:00 p.m. (Testing hours: 8:00 a.m. to 4:00 p.m.)

County of Hawaii:

• Hilo Police Station, 349 Kapiolani Street (Phone: 808-961-2361)
• West Hawaii Civic Center, 74-5044 Ane Keohokalole Highway (Phone: 808-323-4800)
• Waimea Police Station (Phone: 808-887-3087)
• Hours: 7:45 a.m. to 4:00 p.m.

County of Maui:

• Maui Central Service Center, 110 Alaihi Street, Suite 101 (Phone: 808-270-7363)
• Molokai, Mitchell Pauolel Center, 100 Ailoa Street (Phone: 808-553-3430)
• Lanai, 717 Fraser Avenue (Phone: 808-565-7878)
• Hours: 8:00 a.m. to 4:00 p.m.

County of Kauai:

• Department of Finance, 4444 Rice Street, Suite 480, Lihue (Phone: 808-241-4242)
• Hours: 7:45 a.m. to 4:00 p.m. (Testing hours: 8:00 a.m. to 3:00 p.m.)

For the most current information on testing locations, visit the Hawaii DOT website.

Yes, appointments are highly recommended for CDL knowledge testing in Hawaii. To schedule an appointment:

• Honolulu: Call 808-768-4165 or visit the city’s website
• Hawaii County: 808-961-2361 (Hilo) or 808-323-4800 (Kona)
• Maui County: 808-270-7363
• Kauai County: 808-241-4242

While some locations may accept walk-ins, wait times can be very long and you may be turned away if the testing center reaches capacity. Scheduling an appointment guarantees your testing time and minimizes wait time. First-time applicants should schedule well in advance as appointment availability is limited.

No, Hawaii does not offer online CDL knowledge testing. All CDL knowledge tests must be taken in person at an authorized DMV testing center. This is in accordance with federal standards to maintain test security, verify applicant identity and ensure test integrity.

In-person testing prevents cheating and confirms the person receiving the CDL certification is the same person who demonstrated the required knowledge. This applies to all states not just Hawaii and no exceptions are allowed.

Before you go to your CDL knowledge test, gather these required items:

Required Documents:

• Valid Hawaii driver's license
• Social Security card or proof of Social Security number
• Proof of citizenship or legal residency (birth certificate, passport, permanent resident card)
• Two documents proving Hawaii residency with your current address
• Current DOT Medical Certificate (Form MCSA-5876)
• Completed CDL application form (DOT 4-764)
• Payment for all applicable fees
• For Hazardous Materials endorsement: Additional identification for security screening

Additional Items:

• Reading glasses if needed
• Appointment confirmation
• Knowledge of your medical history for certification questions

All documents must be original or certified copies—photocopies are not accepted. Call the DMV before your appointment if you have questions about specific document requirements.

Plan to arrive at least 15-20 minutes before your scheduled test time. This allows time for:

• Document verification and processing
• Application review
• Fee payment
• Getting settled before testing begins

First-time applicants should arrive 30 minutes early to allow for additional paperwork. Late arrivals may need to reschedule and could result in a significant delay to your licensing process. Consider traffic, parking and unfamiliar locations when planning your arrival time.

After passing your CDL knowledge test(s), you will receive a Commercial Learner's Permit (CLP) which is valid for 180 days. Your CLP has restrictions:

• You must wait 14 days before taking the skills test
• You can only drive with a qualified CDL holder in the passenger seat
• No passengers except instructors, examiners or trainees
• No hazmat transport
• Additional restrictions may apply based on vehicle type or endorsements

Your CLP will list any endorsements you tested for, such as passenger, school bus or tank vehicles. This permit allows you to practice driving under supervision before the skills test.

Your Commercial Learner's Permit allows you to practice driving in commercial vehicles matching the class and endorsements you tested for. This practice period is crucial to develop the skills needed to pass the CDL skills test.

During the CLP period focus on:

• Vehicle control and maneuvering
• Pre-trip inspection procedures
• Basic backing skills
• Proper turning techniques
• Safe highway driving practices
• Shifting patterns for your vehicle

Remember a qualified CDL holder must be with you at all times while you are driving a commercial vehicle with your CLP.

In Hawaii, your CDL knowledge test scores are valid for 180 days, the same as your CLP. If your CLP expires before you take the skills test, you will need to retake all knowledge tests.

Hawaii allows one CLP renewal for an additional 180 days without retaking the knowledge tests. To take advantage of this you must renew before your initial CLP expires.

Plan your skills test within the CLP period to avoid retaking the knowledge tests. Skills test appointments may be limited so schedule well in advance.

If you fail one or more CDL knowledge tests in Hawaii:

• You can retake failed tests the next business day
• You only need to retake the tests you failed, not the ones you passed
• Use our practice tests to focus on weak areas
• Review incorrect answers to understand your knowledge gaps
• Consider changing your study methods if you struggle with certain topics

There's no limit on retesting but repeated failures mean you need more study time. Retesting is easy but each attempt costs time and money. Preparation before your first test is the most efficient approach.

Sample question: What happens if I fail a section of the test? A) Wait 30 days before retesting B) Retest immediately at another location C) Wait until the next business day to retest D) Retest all sections, even those passed

Answer: C) Wait until the next business day to retest

After waiting the 14-day minimum for your CLP, you can schedule your CDL skills test by:

• Calling your local CDL testing office
• Verifying your CLP is still valid and your medical certificate is current
• Getting a test vehicle that matches your CDL class
• Paying the $50 skills test scheduling fee
• Choosing from available dates and times

The skills test has three parts: pre-trip inspection, basic vehicle control and on-road driving. You must pass all three in one sitting. Make sure you're prepared for each part before scheduling your test.

For the most current information on skills testing requirements and locations, visit the Hawaii DOT Commercial Driver’s License page.