CDL PRACTICE TEST (DC) - GENERAL KNOWLEDGE TEST

21. You should check air pressure and temperature gauges:
as often as is practical.
at the end of each trip.
at the beginning of each trip.
every time you stop.
22. For an electrical equipment fire or a gasoline or oil fire, use:
water.
a type D fire extinguisher only.
a type B:C fire extinguisher only.
a type A:B:C or B:C fire extinguisher.
23. To check the signal lights, do the following:
Turn off all the lights, turn on the right turn signal lights, and turn on the stop lights.
Turn on the stop lights, turn on all the lights, and turn on the right turn signal lights.
Turn on all the lights, turn off the stop lights, and turn off the left turn signal lights.
Turn off all the lights, turn on the stop lights, and turn on the left turn signal lights.
24. Which of the following is considered a serious traffic violation?
Excessive speeding (15 mph or more above the posted limit)
Following a vehicle too closely
Reckless driving
All of the above
25. To stay alert and safe while driving, you should:
drive at night, if possible.
drink coffee if you get drowsy.
avoid any drug that hides fatigue.
always drive alone, if possible.
26. Convex mirrors:
make objects appear larger than they really are.
show a wider area than flat mirrors.
make things appear closer than they really are.
All of the above.
27. To know when to shift, you can use each of the following except:
perception distance.
engine sounds.
road speed.
engine speed.
28. Regardless of its size, cargo should have at least ___ tie-downs.
2
1
3
4
29. Empty vans are:
lower than fully loaded ones.
the same height as fully loaded ones.
higher than fully loaded ones.
None of the above.
30. If you are driving a 40-foot vehicle at 35 mph, you should leave at least _____ between you and the vehicle ahead.
3 seconds
6 seconds
5 seconds
4 seconds
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