Maryland DMV CDL Doubles / Triples Quick Practice Test

Maryland DMV CDL Doubles / Triples 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.

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Quick Facts:

Number of Questions – 20

Passing Percentage – 80%

Test Type – Free Test

1. A low air pressure warning signal:

Is not required on vehicles with air brakes.
Is required on vehicles with air brakes.
Is optional on vehicles with air brakes.

2. Texting while driving is especially dangerous because:

It is both a mental and physical distraction.
A message may be upsetting to the driver.
People like to read and may become too engaged in their phones.

3. Of the following, which is not a way to prevent drowsiness during a trip?

Getting an adequate amount of sleep before driving
Traveling with a passenger
Scheduling trips during hours when you would not normally be awake
Avoiding medications that may cause drowsiness

4. Alcohol can be removed from your system:

By exercising.
By drinking coffee.
By waiting.

5. What is a way to warn drivers behind you that you will be slowing down?

Turn on the right turn signal followed by the left turn signal.
Tap your brake pedal a few times to illuminate the brake lights.
Swerve from side to side to get other drivers’ attention.
Turn all lights on and off several times.

6. If using a helper when backing a vehicle, the helper should be located:

In front of the passenger's side of the vehicle.
In front of the driver's side of the vehicle.
Near the back of the truck.

7. If a truck's Anti-Lock Braking System (ABS) is not working:

The truck will not have any brakes.
The truck should be driven only at slow speeds.
The truck will still have brakes.
The truck will lack brakes on its left side.

8. In extremely hot conditions, you may have to:

Increase your speed to cool the engine.
Reduce your speed to prevent overheating.
Drain the engine coolant.
Follow other vehicles more closely than normal.

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