Maine DMV CDL Doubles / Triples Quick Practice Test

Maine DMV CDL Doubles / Triples Quick Practice Test For 2024

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.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. What kind of force must emergency brakes use?

Air pressure
Mechanical
Heavy
Electrical

2. What is a retarder?

A device that prevents a vehicle from going too fast
A device that prevents a vehicle from being too loud
A device that improves a vehicle's gas mileage

3. The suspension system:

Holds up the vehicle and its load.
Keeps the load the proper distance behind the driver’s compartment.
Maintains a safe distance between the vehicle and other vehicles.
Lightens the load for the tires.

4. For safety purposes, when should you turn off a retarder?

When the roadways are slippery
When you have a passenger
When you are carrying a heavy load

5. Air brakes are:

An effective tool for stopping large vehicles.
Prohibited on large vehicles.
Only effective in poor weather.
A tool to improve fuel efficiency.

6. To prevent a vehicle from rolling backward when beginning to move forward from a stopped position, you should:

Turn off the engine.
Partly engage the clutch.
Apply the emergency brake.

7. One function of the emergency air line is to:

Control the emergency brakes.
Flash when air pressure is below a certain psi.
Allow for quick turning.
Control the ability to maneuver during bad weather conditions.

8. If your brakes fail on a downgrade, your best hope to stop is to:

Use an escape ramp.
Use the shoulder.
Drift to a stop.

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