| Number of tests: |
3 |
| Number of questions: |
30 |
| Passing score: |
80 |
Directions: To obtain this endorsement for pulling two or three trailers, applicants must pass a 15-question test. And to pass the test, applicants must score at least 80%. Test questions are from the New York Commercial Driver Handbook. The Double/Triple trailers endorsement can be used with the Class A CDL. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at New York DMV locations.
1. Usually, a fully charged air system has _______ psi.
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On narrow or winding roads
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When the road is wet or slippery
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At intersections or railroad crossings
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2. The spring brakes come on when the air pressure drops into what range _________.
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Race your motor to warn the children that you are moving.
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Walk to the back of the car to be sure the way is clear.
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Sound your horn so the children will hear you.
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Tell the children to stay away from the driveway.
3. What are hose couplers?
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Stop drinking one-half hour before driving.
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Ride home with a friend who has not been drinking.
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Drink coffee before driving.
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Take a cold shower before driving.
4. Trailers that do not have spring brakes have emergency brakes, which work from ________.
5. The tractor protection valve ______.
6. The pressure in the service line indicates ______.
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There is a traffic signal ahead.
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Continue at your current speed.
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