FREE AL CDL Doubles Triples Practice Test (2024)

1. For safety during a trip, you should:

watch gauges for signs of trouble.
use your senses to check for problems.
check critical items when you stop.
All of the above.

2. Combination vehicles usually require _________ single commercial vehicles.

3. Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?

4. Which of the following vehicles is most likely to turn over?

5. Which of the the following statements about fatigue is true?

Fatigue may cause you to not see and react to hazards.
Fatigue impairs your vision and judgment.
Fatigued driving is one of the leading causes of accidents.
All of the above.

6. Blocking and bracing are:

driving techniques used to regain control when your drive wheels start to skid.
used to keep cargo from sliding and to prevent movement of cargo.
coupling devices used to connect the service air lines from the truck or tractor to the trailer.
None of the above.

7. When coupling a double or triple, ________ should be attached last.

the middle trailer.
the more heavily loaded trailer.
the trailer right behind the cab.
None of the above.

8. Engine oil pressure should come up to normal within _________ after the engine is started.

9. Warnings on low bridges or underpasses:

are often posted, but sometimes they are not.
must be posted.
are always posted.
None of the above.

10. If the low air pressure warning light comes on, you should:

ALABAMA DOUBLES TRIPLES PRACTICE CDL TEST