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Alaska 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 possible answer choices. Test questions come from the Alaska Commercial Driver 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

The two indicators that determine when you should upshift are:

Engine speed and road speed.
Other trucks and driving conditions.
Timing and road position.

Mirrors should be used:

Only when there may be an emergency.
By a helper to monitor your blind spots.

How can a driver maintain alertness while driving?

Stay fit and healthy
Keep the cab warm
Eat heavy foods

If you are backing and the trailer begins to drift off-course, the driver should:

Return the steering wheel to the 12 o’clock position.
Turn the top of the steering wheel in the direction of the drift.
Turn the top of the steering wheel in the direction opposite of the drift.

During a walk-around inspection, ensure the release arm is properly seated and the safety latch or lock is:


When should mirrors be adjusted?

Before driving
While driving
After driving

An air compressor governor controls:

When the air compressor pumps air into the air storage tanks.
How fast air is pumped into the air storage tanks.
The temperature of the air pumped into the air storage tanks.
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