CDL PRACTICE TEST - GENERAL KNOWLEDGE (MICHIGAN)

21. If you are driving a 40-foot vehicle at 35 mph, you should leave at least _____ between you and the vehicle ahead.
4 seconds
5 seconds
3 seconds
22. The _______ applies and releases the brakes when you use the brake pedal during normal driving.
emergency brake system
parking brake system
service brake system
23. If the safety relief valve in the air brake system releases air:
the valve is fully operational.
something is wrong.
this will supply more power to the brakes.
24. When trying to put out an electrical fire you should:
use an A extinguisher.
use an D extinguisher.
use a B or C extinguisher.
25. Which of the following can cause front-wheel skid?
Lack of tread on the front tires.
Driving too fast for conditions.
All of the above.
26. When crossing railroad tracks, you should:
stay in your lane.
stop on the tracks.
shift gears while crossing the tracks.
27. To avoid rollbacks when you start, you should:
release the parking brake only when you have applied enough engine power.
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
All of the above.
28. When stopping at the scene of an accident, you should NOT:
report any qualified person who is at the accident and helping the injured.
put on your 4-way emergency flashers.
notify authorities.
29. When you have to back, use a helper whenever possible. Before you begin backing, work out a set of hand signals that you both understand. It is especially important to agree on a signal for:
"Get closer"
"Go"
"Stop"
30. Which of the following statements about drinking alcohol is TRUE?
A 5-ounce glass of 12 percent wine contains the same amount of alcohol as a 12-ounce glass of 5 percent beer.
Coffee and a little fresh air will help a drinker sober up.
Alcohol only affects people who are not used to drinking.
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