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Maryland CDL Permit Test - Double

Number of questions: 20
Passing score: 16
Directions: This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three or four possible answer choices. Test questions come from the Maryland Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
You have made error so far
Passing grade —
4 or fewer errors

When backing with a trailer, you should:

First turn the steering wheel in the direction of the turn.
First turn the steering wheel in the direction opposite of the turn.
Turn the wheel as sharply as possible.
Not use the brakes.

Rolling backward when beginning to accelerate is dangerous because:

The transmission may be damaged.
The truck is not made to go backwards.
You may hit a vehicle behind you.

When should mirrors be adjusted?

Before driving
While driving
After driving

When driving a 50-foot truck at 50 mph, your minimum following distance should be:

Four seconds.
Five seconds.
Six seconds.

Which of the following is a sign that brakes will need repair?

Brake pads are not covered in grease.
Brake pads are not covered in oil.
Brake shoes are worn thin.

On a curve, the posted speed limit:

Is safe to be driven in any vehicle.
Can still permit a vehicle to tip over.
Is understood to be the minimum legal speed limit.

Drivers talking to passengers in their vehicle should be viewed as:

Responsible drivers.
Distracted drivers.
Knowledgeable drivers.
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