Louisiana DMV CDL Doubles / Triples Quick Practice Test

Louisiana 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. Truck tractors with air brakes that were built on or after March 1, 1997 are equipped with:

An extra set of brakes.
Voice-activated brakes.
Cruise control.
Anti-Lock Braking Systems (ABS).

2. The application pressure gauge:

Shows how much air pressure is being applied to the brakes.
Shows the temperature of air being used in the braking system.
Shows the pressure of the air coming from the compressor.
Shows the number of times the brakes have been used.

3. Combination vehicles:

Are usually shorter than single commercial vehicles.
Are usually lighter than single commercial vehicles.
Require more skill to drive than single commercial vehicles.
Are easier to drive than single commercial vehicles.

4. If you remain in neutral for too long while switching gears:

The vehicle will speed up.
You may have trouble putting the vehicle into the next gear.
You may kill the engine.

5. When preparing to enter traffic, you should do all of the following, except:

Wait for a large gap between vehicles.
Be prepared for your vehicle to accelerate slowly, especially if it is loaded.
Make sure you can completely cross traffic, if necessary, without interfering with traffic.
Assume other drivers will make room for your much larger vehicle.

6. What is often found in compressed air?

Water
Cardboard
Brake fluid

7. What happens if the air pressure in a system's air tanks falls below 60 psi?

A warning light will come on.
The vehicle will not shift out of gear.
The front lights will flash.
The vehicle should stop.

8. Before starting down a hill, you should:

Shift into a higher gear.
Shift into a lower gear.
Accelerate.
Move into the left lane.

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