CDL COMBINATION PRACTICE TEST (LA)

11. If you are being tailgated, you should:
increase your following distance.
flash your brake lights.
speed up.
move to the left lane.
12. Most heavy trucks with manual transmissions require ____ to change gears.
double clutching
single clutching
triple clutching
None of the above.
13. If you have convex mirrors, be aware that:
in a convex mirror objects appears larger than they really are.
everything appears smaller in a convex mirror than it would if you were looking at it directly.
objects may appear to be faster than they really are.
objects seem closer than they really are.
14. When you use your mirrors while driving on the road, you should:
stare for a long time at the mirror.
check them quickly.
only use the driver's side mirror.
avoid checking them regularly.
15. Which of the following may have reduced the clearances since the heights were posted at bridges and overpasses?
Rain
The weight of a cargo
Traffic
Repaving of the road
16. If your truck has automatic transmission, you should downshift:
whenever road conditions allow.
when going down grades.
after entering a curve.
when you need to accelerate.
17. If loose or missing, _______ may cause movement between the frame and fifth wheel assembly.
locking pins
safety chains
electric connectors
mounting bolts
18. When driving on slippery roads, you should NOT:
go slowly.
watch far enough ahead to keep a steady speed.
use the engine brake.
try to anticipate stops early.
19. If a vehicle is equipped with ABS, when you start the engine:
the trailer emergency brakes will come on.
the spring brakes will come on.
the wheels will lock up.
the ABS indicator light on the dash should come on and then turn off.
20. Combination vehicles have __ air lines.
4
2
3
1
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