Hawaii DMV CDL Air Brakes Quick Practice Test

Hawaii DMV CDL Air Brakes Quick Practice Test For 2026

CDL Class A, B or C. Complete CDL driver training course. All the questions in this test are from the official DMV written exam. You can use our free online tests to evaluate how likely you are to pass the official DMV test. Or you can just cut to the chase and increase your chances of passing by upgrading to Premium Membership and unlock official DMV tests. In addition, you will also receive a master cheat sheet which contains all your state’s DMV questions and answers. Premium membership also unlocks a smart tracker which keeps an inventory of all incorrectly answered questions for easy, fast and effective revision. Practice with our free tests or hit Upgrade button below for premium access and increase your chances of passing your DMV written exam.

99.5% Pass Rate

Get Access To Official DMV Online Tests & A Master Cheat Sheet With All Questions & Answers For Your State. 99.5% Pass Rate Guaranteed!

Upgrade To Premium

Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. When the spring brakes are on, you should never:

Turn on the lights.
Turn off the vehicle.
Push down the brake pedal.

2. Truck tractors with air brakes built on or after March 1, 1997 must have:

An Anti-Lock Braking System (ABS).
Bluetooth.
GPS.
A rear back-up camera.

3. To prevent a rollover, cargo should be:

Placed near the front of a trailer.
Placed near the rear of a trailer.
Spread out on a trailer.
Loaded with most weight on the driver’s side of a trailer.

4. Water and compressor oil are usually found in the compressed air within an air brake system. Water and compressor oil:

Are necessary for the proper function of the air brake system.
Should be added if low.
Should be removed regularly.
Are not concerns.

5. To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:

Set the control to normal.
Set the control to the off position.
Set the control to neutral.
Keep the control at the halfway mark.

6. A dual air brake system:

Consists of two separate air brake systems that share a single set of controls.
Is a single air brake system with two different sets of controls.
Consists of one air brake system for the left side of the truck and one system for the right side of the truck, each with its own set of controls.

7. Foundation brakes are used:

Only at the front wheels.
Only at the rear wheels.
Only at the driver’s side wheels.
At each wheel.

8. On trucks and buses, where are ABS malfunction lamps located?

On the driver’s door
On the instrument panel
On the outside of the vehicle by the passenger’s door
Under the hood

Page 1 of 3