CDL PRACTICE TEST (SD) - GENERAL KNOWLEDGE TEST

31. When driving a modern truck, the gear you should be in before starting down a hill is usually_____ the gear required to climb the same hill.
lower than
the same as
higher than
None of the above.
32. To avoid becoming distracted while driving, you should:
familiarize yourself with your vehicle's features within the first 10 miles of driving.
pre-program your favorite radio stations.
be careful when reading a text message on your mobiledevice while driving.
All of the above.
33. After starting the engine the coolant temperature should:
rise gradually.
slowly decrease.
rise quickly.
hold steady.
34. After starting the engine, you are looking at the oil pressure gauge. Oil pressure should come up to normal within:
seconds.
10 minutes.
2 minutes.
5 minutes.
35. On front tires, tread should be at least:
4/32 inch
1/16 inch
4/16 inch
2/32 inch
36. It is safer to drive over (rather than to avoid) which of the following?
Cardboard boxes
Paper and cloth sacks
Plastic containers
None of the above.
37. Front-end header boards:
protect drivers from spilled cargo.
should never be used.
protect drivers from cargo in case of an accident or emergency stop.
reduce traction.
38. Strong winds can make it difficult to stay in your lane especially when driving:
vehicles with ABS.
heavier vehicles.
flatbed trailers.
lighter vehicles.
39. The spring brakes come on:
when you bring the vehicle to a complete stop right away.
when air pressure in both air brake systems rises to a value set by the manufacturer.
when main air pressure is lost.
when you lose ABS control.
40. The air compressor is connected to:
the radiator.
the suspension system.
the transmission.
the engine.
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