CDL GENERAL KNOWLEDGE TEST (OKLAHOMA) - PRACTICE TEST

31. Using a helper when backing up is:
dangerous.
encouraged.
illegal.
32. Which of the following statements about driving in slippery conditions is NOT true?
The roads are most slippery in the first half hour after it starts to rain.
When the temperature drops, bridges will freeze before the road will.
As the temperature rises to the point where ice begins to melt, the road becomes less slippery.
33. When you park your vehicle and turn off the engine:
move the gear shift to first gear, if possible.
apply the parking brake.
activate your right turn signal.
34. Which of the following statements about hydroplaning is true?
Hydroplaning usually occurs at speeds lower than 30 mph.
Hydroplaning is less likely if tire pressure is low.
Hydroplaning is more likely if tire tread is worn.
35. Most heavy-duty vehicles use:
hydraulic brakes.
air brakes.
solid brakes.
36. The most important hand signal you should agree on with a helper is:
Keep backing
Stop
Go
37. Which of the following is NOT true?
ABS will change the way you normally brake.
ABS won't compensate for bad brakes.
ABS only comes into play when a wheel would have locked up because of over braking.
38. Broken suspension parts:
should not be a concern unless you are driving on steep grades.
can be extremely dangerous.
hold up the vehicle and its load and keep the axles in place.
39. How should you apply the brakes when going down a steep downgrade?
Apply the brakes as hard as you can without locking the wheels.
Apply the brakes whenever you reach your safe speed, until your speed has been reduced to 5 mph below your safe speed.
Apply the brakes when you reach the bottom of the downgrade.
40. Things that can distract your attention while you are driving include:
police pulling someone over.
sunlight/sunset.
All of the above.
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