FREE New York CDL Doubles Triples Practice Test (2024)

1. Many large vehicles have convex (curved, "spot, "fisheye") mirrors. Convex mirrors:

are illegal in most states.
misrepresent reality by showing a larger area than flat mirrors.
make things look smaller and farther away than they really are.
None of the above.

2. Air brakes use ________ to make the brakes work.

3. When connecting to the rear trailer, the trailer height should be:

lower than the center of the fifth-wheel.
the same height as the fifth-wheel.
higher than the center of the fifth-wheel.
None of the above.

4. What is Gross Vehicle Weight?

The total weight of a single vehicle, excluding its load
The total weight of a single vehicle, including its load
The total weight of the cargo
The total weight of a combination of vehicles excluding the load

5. Combination vehicles have __ air lines.

6. When you turn suddenly while pulling doubles, which trailer is most likely to turn over?

The front trailer is twice as likely to turn over as the tractor.
All trailers are equally likely to turn over.
The rear trailer is twice as likely to turn over as the tractor.
None of the above.

7. You can release dolly brakes:

by opening the air tank petcock.
by opening the service line valve.
by closing the emergency line valve.
by closing the air tank petcock.

8. When you turn suddenly, which trailer is most likely to turn over?

9. To avoid becoming an aggressive driver you should:

make gestures to other drivers.
give other drivers your full attention.
give other drivers the benefit of the doubt.
speed up if you think you’re going to be late.

10. When going down grades, you should:

rely solely on engine braking to reduce your speed.
put the transmission in Neutral.
shift up.
downshift to a lower gear.

NEW YORK CDL DOUBLES TRIPLES PRACTICE TEST