CDL GENERAL KNOWLEDGE TEST (SOUTH DAKOTA) - PRACTICE TEST

31. How should you hold the steering wheel?
Firmly, with your hands on opposite sides of the wheel
With your right hand on the wheel
Firmly, with your left hand at the top of the wheel and the right hand at the bottom of the wheel
With your left hand on the wheel
32. Serious traffic violations include:
driving a CMV without obtaining a CDL.
erratic lane changes.
excessive speeding.
All of the above.
33. To test the stopping action of your service brakes, go about:
5 mph.
50 mph.
25 mph.
15 mph.
34. When using your turn signals, you should:
signal well before you turn.
turn the signal off before you turn.
signal only if vehicles are in front of you.
signal only if vehicles are behind you.
35. Hydroplaning:
only occurs at extremely high speeds.
can occur at speeds as low as 30 mph.
only happens when tire pressure is higher than normal.
never occurs at speeds below 40 mph.
36. When checking the steering system for defects, you should look for:
bent, loose, or broken parts, such as tie rods.
cut or cracked valve stems.
loose, broken, or missing tailpipes.
missing or broken leaves in any leaf spring.
37. Your mirrors should be adjusted so that:
a part of the vehicle is visible in the mirror.
the rear of the vehicle is visible in the mirror.
no part of the vehicle is visible in the mirror.
more than half of the mirror shows the vehicle.
38. To avoid becoming a distracted driver you should:
adjust all vehicle controls and mirrors while driving.
not engage in complex conversations with others.
not turn off all communication devices.
eat and drink while you drive.
39. If your vehicle is hydroplaning, you should:
use the brakes to slow down.
accelerate to get through the water as quickly as possible.
release the accelerator and push in the clutch.
None of the above.
40. When a tire suddenly blows out while you are driving, what should you do first?
Use the parking brake.
Brake lightly and hold the steering wheel firmly.
Hold the steering wheel firmly and stay off the brakes.
Use controlled or stab braking.
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