Nevada 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 or four possible answer choices. Test questions come from the Nevada 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
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1.
The air storage tanks:
Hold only enough air for one braking cycle.
Hold enough air for the brakes to be used several times if the compressor stops working.
Do not hold air unless there is an emergency.
2.
Off-ramps:
Are usually safe for trucks.
Can be dangerous for trucks.
Should not be used by trucks.
Should be used only if following another vehicle.
3.
How can you avoid becoming drowsy on a trip?
Get about three hours of sleep beforehand.
Plan ahead, including stopping points.
Do not build exercise into your daily routine.
Schedule the trip at night.
4.
Radial and bias-ply tires:
Should be used together.
Should be used together on the front of a vehicle.
Should not be used together.
5.
Alcohol usually:
Improves reaction time.
Impairs depth perception.
Improves night vision.
6.
When driving through fog, a driver should:
Use high beam headlights.
Use low beam headlights.
Run the windshield wipers.
Drive on the shoulder.
7.
To prevent your tires and engine from overheating while you are driving in especially hot weather, you should:
Increase your speed.
Decrease your speed.
Drive on the shoulder.
Drive with your windows down.
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