CDL Doubles & Triples Test 4 – Classic Mode

This is CDL Doubles and Triples Test 4 in our original Classic Mode. Simply click in your answer to each CDL practice test question. When you're finished, check your score and results. You can reset the test and retake it as needed.

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1. Which of these statements about quick steering movements and doubles / triples is true?

A Countersteering is easier with doubles / triples than with most other vehicles
B You should put on the brakes at the same time you perform quick steering movements
C Doubles / triples are no problem with a quick steering move
D Doubles / triples flip over from quick steering moves more easily than many other vehicles

2. Empty trucks:

A May have poor traction due to bouncing and wheel lockup
B Stop in the same distance as a fully loaded one
C Require shorter stopping distances than full ones.
D Are the easiest to stop since there is no shifting cargo

3. You are driving a 100 foot truck with double trailers at 30 mph. The road is dry. Visibility is good. You should keep at least ____ seconds of space ahead of you:

A 9
B 10
C 11
D 12

4. If you want to couple a second trailer to your combination vehicle, secure it by using:

A The trailer's spring brakes and emergency air brakes
B Wheel chocks
C Either of the above, if available
D None of the above

5. The best way to stop all skids is to:

A Use stab or controlled braking
B Countersteer and accelerate
C Restore traction to the tires
D Steer and brake hard

6. Driving a truck with double or triple trailers requires a driver to:

A Use special care in bad weather and mountain conditions
B Allow more following distance than for smaller vehicles
C Both A and B
D None of the above

7. The best way to keep brakes from overheating while going down a steep grade is to:

A Use stab braking
B Use only the trailer brakes
C Use countersteering practices
D Go 5 m.p.h. below your safe speed

8. If you must drive through deep puddles or flowing water, which of these should you not do?

A Drive though quickly
B Use a lower gear
C Increase engine RPM
D Take advantage of the water and let it wash off your tires etc.

9. Some large trucks have convex or "spot" mirrors which:

A Make things look smaller and farther away than they really are
B Do not need to be checked as often as flat mirrors because they show a larger area
C Are against the law in most states
D Make things look larger and closer than the really are

10. Which of these statements about seeing ahead is true?

A At highway speed, you should look up to 1/4 mile ahead of your truck
B Many drivers do not look far enough ahead of their truck
C Good drivers shift their attention back and forth, near and far
D All of the above are true

End of Test #4

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