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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.
You have made error so far
Passing grade —
4 or fewer errors
Within 10 minutes of stopping on the side of the road, you must:
Place emergency warning devices.
Alert local law enforcement.
Call a mechanic.
Mirror adjustment can only be checked properly if:
The trailer is straight.
There is no trailer.
The vehicle is on a slight incline.
When an engine is running, an acceptable oil pressure would be:
10 psi.
50 psi.
110 psi.
If making a tight turn, the operator of a CMV should:
Be able to drive as fast as the driver of a car.
Not be concerned about speed, but focus on the road.
Warn drivers behind by braking early and slowing gradually.
When starting a vehicle, the oil pressure should:
Gradually build up pressure over the span of a few minutes.
Come up to normal within a few seconds.
Start high, then decrease as the engine is run.
A shut-off valve is:
A device that prevents air from escaping an air brake system.
A substitute for a pintle hook.
Another name for a glad hand.
When starting the engine of a truck with a trailer, you can tell that your vehicle's ABS is not working if:
The yellow light on the left rear of the trailer stays on.
The red light on the right side of the trailer flashes three times.
All the rear lights flash and then turn off.
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