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.

The air pressure has become too high.

The brakes are fully operational.

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.

When tank pressure falls below 60 psi.

When tank pressure falls below 120 psi.

When tank pressure falls below 60 psi.

When tank pressure falls below 10 psi.

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.

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

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.

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

A vehicle should not roll back.

A vehicle should shift to the right.

A vehicle should be put into third gear.

A vehicle should not roll back.

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.

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

Place the vehicle in second gear.

Use the parking brake when stopping.

Double Triple Test | Hawaii 2024 #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 2024, 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

Double Triple Test | Hawaii 2024 #2

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

2 . A low air pressure warning signal should activate:

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

4 . When starting from a stop:

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

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

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

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