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West Virginia 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 four possible answer choices. Test questions come from the West Virginia Commercial Driver’s License Manual. 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


Has little effect on driving.
Can impair driving.
Is not noticeable.

Large combination vehicles take the longest amount of time to stop:

When fully loaded.
When partially loaded.
When empty.
When mostly loaded.

Which of the following is not another name for convex mirrors?

Fisheye mirrors
Spot mirrors
Bug-eye mirrors
Flat side mirrors

During a pre-trip inspection of the upper fifth wheel, the glide plate should be:

Folded under the lower fifth wheel.
Removed from the converter dolly.
Securely mounted to the trailer frame.
Connected to the emergency air line.

When driving at highway speeds, you should watch the road about ____ ahead of your vehicle.

One block
100 yards
One quarter mile
One mile

Rough acceleration:

Can damage a vehicle.
Is necessary to warm up parts of the engine.
Is encouraged to improve gas mileage.
Should be done on surfaces with poor traction.

Which of the following is acceptable if found during a pre-trip inspection?

Tires in mismatched sizes
Tread depth of 2/32 of an inch in the grooves of the front tires
Tires manufactured by different makers
Cracks in the tires
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