Double Triple Test | Hawaii 2025 #2

Train for FREE with our Hawaii CDL double triple practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a HI CDL double triple license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

1 . If the safety relief valve in the air brake system releases air:

The compressor needs more air.

The air pressure has become too high.

The brakes are fully operational.

An air brake system has a safety relief valve, which releases air from the tanks if the pressure gets too high. If the valve must operate, something in the system is wrong and should be addressed by a mechanic.

2 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi.

When tank pressure falls below 60 psi.

When tank pressure falls below 10 psi.

In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

3 . If one-fourth of the leaves in a leaf spring are missing when a vehicle is inspected:

The vehicle’s driver will be allowed to drive, but only at reduced speeds.

The vehicle will be put out-of-service until it is fixed.

The vehicle will be fine to drive since most of the spring is in place.

When inspecting a vehicle's suspension, you should look for broken or missing leaves in the leaf springs. Any defect of this kind is dangerous. If one-fourth or more of the leaves are missing from any leaf spring, the vehicle must be put out-of-service.

4 . When starting from a stop:

A vehicle should shift to the right.

A vehicle should be put into third gear.

A vehicle should not roll back.

To avoid hitting anything behind you, make sure that your vehicle does not roll back when you start from a complete stop.

5 . Which of the following is the best advice for driving in fog?

Try not to drive in fog.

Use your high beam headlights.

Turn off your lights.

Driving in fog is always dangerous and should be avoided entirely if at all possible. If you must drive in fog, be sure to turn on your low beam headlights and fog lights, even during the daytime.

6 . Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.

Spring brakes

Parking brakes

Air brakes

Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure levels drop to an unsafe level, the parking brake valve should pop out and spring brakes should come on.

7 . To prevent your vehicle from rolling backward when beginning to move, you can:

Partly engage the clutch before taking your foot off the brake pedal.

Place the vehicle in second gear.

Use the parking brake when stopping.

To ensure that your vehicle does not roll backward when beginning to move after a stop, you should partly engage the clutch before removing your right foot from the brake pedal.

Study tip:

Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet”

99.2% of people who use the cheat sheet pass the FIRST TIME

Click Here
Full Cheat Sheet

99.2%

99.2% of people who use the cheat sheet pass the FIRST TIME

2025 Hawaii | Frequently Asked Questions

To secure a CDL Doubles/Triples endorsement in Hawaii, you first need a valid Hawaii CDL. Then, study the Hawaii CDL Manual's section on Doubles and Triples. Schedule and pass the written knowledge test at a local DMV office. The test covers information regarding coupling and uncoupling, inspecting doubles and triples, and handling these vehicles.

To obtain a CDL Doubles/Triples license, you first need a valid Commercial Driver's License (CDL). Then, you must study the relevant sections of the CDL manual, focusing on handling and inspecting doubles and triples. After studying, schedule and pass the written knowledge test at your local DMV. This test covers coupling and uncoupling, inspecting, and handling these types of vehicles.

While no specific prior experience is mandated for a CDL Doubles/Triples endorsement, it's crucial to thoroughly study the relevant sections in the CDL manual. This prepares you for the written knowledge test at your local DMV. Practical training or experience driving these vehicles can be beneficial, but it's not a pre-requisite. The key is passing the knowledge test.

Yes, to obtain a CDL Doubles/Triples endorsement, you must pass an additional written knowledge test. This test focuses on specifics of handling and inspecting double and triple trailers. The content for the test can be found in the CDL manual, particularly in sections dealing with coupling/uncoupling and inspecting these types of vehicles.

The CDL Doubles/Triples endorsement test in Hawaii is a written examination, not a skills test. It will cover knowledge on coupling and uncoupling, inspecting doubles and triples, and checking air brakes. However, you won't need to perform any specific maneuvers or showcase driving skills. It's advisable to study the Hawaii CDL manual thoroughly before taking the test.

No, it's not permissible. Operating double or triple trailers requires a valid CDL with a Doubles/Triples endorsement. This endorsement signifies that you've passed the required knowledge test and are competent to handle these types of vehicles. Without it, you're legally not allowed to drive double or triple trailers in Hawaii or any other state.

Yes, you can append the CDL Doubles/Triples endorsement to your current license. You don't need to initiate a new application for the entire license. However, you will need to pass the Doubles/Triples knowledge test and pay any associated fees. Once you've successfully completed these steps, the endorsement will be added to your existing CDL.

Yes, there are constraints for drivers with a CDL Doubles/Triples endorsement in Hawaii. The driver must be at least 21 years old to drive interstate. Also, they must have a clean driving record, pass a medical examination every two years, and complete required training. Furthermore, the endorsement only allows for the operation of doubles and triples trailers, not other commercial vehicles unless specified on the CDL.

In Hawaii, the maximum legal weight for a vehicle is 80,000 pounds. The maximum length for a double trailer is 61 feet for the two trailers, but the overall length of the truck and trailers combined is not to exceed 65 feet. Triple trailers are not allowed in Hawaii. Always check specific state regulations as they can vary.

Yes, drivers with a CDL Doubles/Triples endorsement must follow specific safety guidelines. These include proper coupling and uncoupling of units, inspecting the coupling system regularly, maintaining safe following distance, and understanding the high rollover risk. They must also be aware of the "crack-the-whip" effect, which can cause the last trailer to swing out and potentially tip over.