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Free CDL - Section 7 - Doubles and Triples

You are about to take a FREE Sample of the CDL - Section 7 - Doubles and Triples. The sample test consists of 10 multiple choice questions and answers.

Please select the best answer for each question below and then click "Submit."

1. The _______________ trailer in a combination is the most likely one to turn over.

c.
last
b.
second
a.
first

2. True or False: Converter dollies built on or after March 1, 1998, are required to have antilock brakes.

b.
False
a.
True

3. Converter dollies with antilock brakes will have a ______________ stamp on the ____________ side of the dolly.

e.
All of the above
d.
red, right
c.
red, left
b.
yellow, right
a.
yellow, left

4. When coupling a twin trailer, the first step is to:

d.
connect the converter dolly to the rear trailer
c.
connect the converter dolly to the front trailer
b.
position the converter dolly in front of the second (rear) trailer
a.
secure the second (rear) trailer

5. When connecting a converter dolly to the rear trailer, make sure that the trailer brakes are ________________ and/or the wheels are _________________.

d.
released, chocked
c.
released, locked
b.
chocked, locked
a.
locked, chocked

6. When uncouping twin trailers, the first thing you should do is:

d.
lower the dolly landing gear
c.
disconnect the safety chains
b.
uncouple the converter dolly
a.
uncouple the rear trailer

7. True or False: When uncoupling the converter dolly of twin trailers, it is acceptable to unlock the pintle hook with the dolly under the rear trailer.

b.
True
a.
False

8. When inspecting double and triple trailers, make sure that there is no visible space between the upper and lower ___________________.

e.
None of the above
d.
air line
c.
kingpin
b.
shank
a.
fifth wheel

9. When checking double and triple trailers, the rear of the front trailers should be ______________, the rear of the last trailer should be ______________, and the converter dolly air tank drain valve should be ______________.

e.
None of the above
d.
closed, open, open
c.
closed, closed, open
b.
open, open, closed
a.
open, closed, closed

10. When parking a double or triple trailer, make sure that you will be able to:

d.
steer right
c.
steer left
b.
back out
a.
pull straight through