Is necessary to warm up parts of the engine.

Is encouraged to improve gas mileage.

Should be done on surfaces with poor traction.

West Virginia CDL Double 1 - DMV Written Test Questions with Answers

Q.1

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

Fisheye mirrors
Spot mirrors
Bug-eye mirrors
Flat side mirrors

Q.2

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

Q.3

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

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

Q.4

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.

Q.5

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

One block
100 yards
One quarter mile
One mile

Q.6

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.

Q.7

Fatigue:

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

Q.8

How should you check your hydraulic brakes?

Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should not move.
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should slowly move toward the floor.
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should slowly rise.
Pump the brakes three times, then apply firm pressure to the brake pedal for five seconds. The brake pedal should be easy to push to the floor.

Q.9

To test the trailer service brakes, you should:

Move the vehicle forward slowly and apply the brakes with the brake pedal.
Reverse the vehicle slowly and apply the brakes with the hand control.
Reverse the vehicle slowly and apply the brakes with the brake pedal.
Move the vehicle forward slowly and apply the brakes with the hand control.

Q.10

If your trailer goes off course while you are backing, you should:

Continue the backing process without changing anything.
Pull the truck forward, readjust, and start backing again.
Get out of the truck and move the trailer into the right position.
Turn the steering wheel all the way to the left until the trailer straightens out.

Q.11

When you leave your vehicle, you should:

Apply the parking brake.
Apply the air brake.
Not apply any brake.
Leave the door open.

Q.12

The best way to notice if a trailer has begun to skid is to:

Ask another driver.
Use your mirrors to determine if the trailer has left the lane.
Look at the skid sensor.
Feel the tractor move.

Q.13

Both systems in a dual air brake systems share:

Air tanks.
Hoses.
Air lines.
An air compressor.

Q.14

The steering wheel should be:

Held with both hands.
Held by one hand to allow for other tasks, such as eating and drinking.
Held by one hand at a time, alternating between hands.
Cracked to allow for an improved grip.

Q.15

Emergency brakes:

Are not required on trucks.
Are only required on trailers.
Are required on tractors.
Are optional.

Q.16

Pull out the trailer air supply control to test:

The parking brake.
The trailer emergency brakes.
The trailer service brakes.
The landing gear.

Q.17

Braking mechanisms are located ____ a brake drum.

Outside
Inside
Next to
On top of

Q.18

The emergency air line:

Is controlled by the foot brake.
Is connected to the relay valves.
Supplies air to the trailer air tanks.
Prevents skids.

Q.19

Spring brakes come on:

When too much air pressure is lost.
When a control on the dashboard is activated.
When the tires have minimal tread depth.
When the brakes are noisy.

Q.20

Looking far ahead of your vehicle when driving is:

Discouraged because the road ahead is not as important as your current location.
Encouraged to help you identify hazards as early as possible.
Not allowed.
Only encouraged when transporting hazardous materials.

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

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

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

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

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

Rough acceleration:

Fatigue:

How should you check your hydraulic brakes?

To test the trailer service brakes, you should:

If your trailer goes off course while you are backing, you should:

When you leave your vehicle, you should:

The best way to notice if a trailer has begun to skid is to:

Both systems in a dual air brake systems share:

The steering wheel should be:

Emergency brakes:

Pull out the trailer air supply control to test:

Braking mechanisms are located ____ a brake drum.

The emergency air line:

Spring brakes come on:

Looking far ahead of your vehicle when driving is:

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