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New Hampshire 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 four possible answer choices. Test questions come from the New Hampshire CDL Driver’s Guide. 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.
Which of the following is most likely to result in hydroplaning?
Using tires with worn tread
Using properly inflated tires
Using new tires
Traveling at speeds under 10 mph
2.
Drivers trapped behind a slow-moving vehicle often:
Follow the vehicle too closely.
Allow the vehicle plenty of space.
Are happy with the speed of travel.
3.
A pre-trip inspection:
Should be done in the same way every time.
Should be done differently every time.
Does not always need to include all items of concern.
4.
A stopped bus:
Is not a cause for concern since it is stopped.
Is only a concern if passengers are exiting the bus.
Is a concern whether or not passengers are visible.
5.
Eating while driving is:
A good way to save time.
A dangerous activity.
Acceptable if you are eating foods that are easy to eat.
6.
When pulled over to the side of the road, you should:
Rely on your taillights to alert other motorists to your presence.
Not worry about other motorists.
Use your four-way emergency flashers to alert other motorists to your presence.
7.
What does an air compressor do in an air brake system?
It pumps air into the air storage tanks.
It fills the tires.
It moves air to the back of the truck.
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