CDL Practice Test


This site is available to take practice questions to prepare for the Hawaii CDL test. The tests are free and you are able to take them as many times as you would like as you look to obtain a Hawaii CDL. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit.  You may not go back once you answer a question. Click the "Start Test" button below to begin. 

1 / 40

What is the best way to prevent brakes form overheating while drive down a steep grade?

2 / 40

Select when you should use the parking brake:

3 / 40

This should have no illegal stickers, dirt, obstructions, or damage to the glass.

4 / 40

How do you test the trailer service brakes?

5 / 40

You should___when driving down a long steep hill.

6 / 40

How often should air tanks be drained?

7 / 40

An "A/W" the first column of the hazardous materials table means:

8 / 40

This object is required to be checked for damage, that it's secure, and strong enough to handle any cargo.

9 / 40

Rods, connecting links, and arms from the steering box to the wheel are a part of the:

10 / 40

What is the purpose of a driver placarding his or her vehicle?

11 / 40

Where can you find a shipper’s certification?

12 / 40

Which of the following is a necessary qualification for non-bulk packaging?

13 / 40

This item should not be rusted, bent, or damaged and centered over evenly spaced tires and dual wheels.

14 / 40

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

15 / 40

Who is responsible for certifying on the bills of lading that the hazardous materials are prepared properly?

16 / 40

The driver's manual advises you to disconnect the steering axle brake to keep the rig straight:

17 / 40

Why does it take special skills to haul a tank vehicle?

18 / 40

How often should you check the cargo you are transporting?

19 / 40

Select the definition for outage:

20 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

21 / 40

When should air tanks be drained?

22 / 40

You are required to have a tank endorsement when transporting:

23 / 40

What is the purpose of a baffle?

24 / 40

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

25 / 40

The gauge that needs to come up to normal levels after starting the engine within a few seconds is _____.

26 / 40

The emergency air line is _____and the service air line is____.

27 / 40

Why should you use chocks when parking a trailer without spring brakes?

28 / 40

Which of the following are possible causes of tire fires?

29 / 40

Which of the following must drivers have in their possession while transporting class A or B explosives?

30 / 40

You should place the starter switch key into your pocket while you are performing the pre-trip inspection because:

31 / 40

Select the two reasons as to why special care is needed when driving a tank vehicle:

32 / 40

Which trailer is more likely to roll over when pulling 3 trailers?

33 / 40

Select the two things that are important in preventing a rollover:

34 / 40

If you are driving a 100-foot truck with double trailers at 30 mph in dry conditions, how many seconds of space should there be between your truck and other vehicles?

35 / 40

This component should be checked that it is solid, securely bolted to the tracture frame, and clear of objects.

36 / 40

What placards, if any, do you need if your load includes 20 pounds of Division 2.3 gas and 1,001 pounds of flammable gas?

37 / 40

How should you know when to shift?

38 / 40

A placard is required for a combustible liquid at?

39 / 40

Which of the following statements about downshifting is NOT true?

40 / 40

You are checking the_______when looking at the dipstick to see if the lubrication is at the safe operating range or above the refill line.

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CDL Category Practice Tests

CDL Practice Test

How To Get A hawaii Commercial Drivers License

Applicants can apply for a CDL at age 18. Only applicants over the age of 21 years old can drive commercial vehicles in other states than Hawaii. Hazmat Endorsements and transporting persons is restricted to those applicants that are 21 years or older. Those applying for a commercial driver’s license must supply a DOT medical card and pass a vision assessment at the Hawaii State testing facility.

If any of the following statements are true about an applicant, they are automatically disqualified from receiving a CDL.

  • Having more than one driver’s license.
  • Being disqualified from commercial driving privileges in another state.
  • Having a driving impaired conviction in a commercial vehicle in the past 24 months.
  • Having a suspended, denied, canceled, or revoked license.

Applicants must successfully pass both a knowledge test and a practical skills test in order to be eligible for their CDL.

H – Hazardous Materials
X – Tank with Hazmat
N – Tank Vehicles
P – Passenger Vehicle
T – Triples / Double Rigs

Hit the Open Road

hawaii CDL License Test Tips

To obtain a CDL, all applicants must complete a knowledge test. This knowledge test contains 50 questions about the topic of commercial driving. All applicants for Class A CDLs must complete an additional 20 questions about combination driving. Those looking to obtain endorsements or to remove the Air Brake restriction will need to take additional assessments. Those seeking the Passenger, Doubles/Triples, and Tank Endorsements will need to pass a 20 question test. Those looking for the School Bus Endorsement and/or the Air Brake Restriction Removal will need to complete a 25 question test. The Hazmat Endorsement requires successful completion of a 30 question test. A passing score is marked at 80 percent or above.

Applicants must successfully complete a three-section skills assessment. This includes a vehicle inspection, driving test, and basic control skills test. This showcases the applicant’s ability to properly operate a commercial vehicle. Applicants must utilize the vehicle they are seeking an endorsement with to obtain their CDL endorsement.

Additional Information

Hawaii Division of Motor Vehicles Information

The State of Hawaii County of Hawaii Vehicle Registration and Licensing Division regulates CDL requirements and testing in Hawaii. To get more information contact them via:

Website: http://www.hawaiicounty.gov/finance-cdl-general-info

Phone:  808.961.2222

Additional HAWAII CDL Helpful Links

Please use the links below to access more valuable Hawaii CDL testing resources and to learn more about practice driving tests for the state of Hawaii.