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Arizona 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 Arizona 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.
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Passing grade —
4 or fewer errors
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8.
To prevent a trailer from rolling over while turning, you should:
Decelerate before the turn.
Accelerate before the turn.
Drive in the left lane.
9.
An empty truck:
Requires a shorter stopping distance than a full truck.
Requires a longer stopping distance than a full truck.
Takes the same distance to stop as a full truck.
10.
When should mirrors be adjusted?
Before driving
While driving
After driving
11.
If a vehicle is carrying hazardous cargo, placards must be placed:
Only on the front of the vehicle.
On the front, rear, and sides of the vehicle.
Only on the driver’s side of the vehicle.
12.
A Class 1 hazardous material is:
An explosive.
Radioactive.
Corrosive.
13.
When coupling together two trailers, you can secure the second trailer by:
Detaching the emergency line.
Setting wheel chocks.
Placing it at the base of a hill.
14.
An after-trip inspection should be done:
Once a week.
Once a month.
After every trip.
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