GENERAL KNOWLEDGE CDL TEST PENNSYLVANIA - PRACTICE TEST

31. When you are driving in close quarters, you should:
rely solely on your mirrors.
check your mirrors often.
avoid checking your your mirrors too frequently.
not use your mirrors.
32. When backing you should:
back and turn toward the right side.
not use a helper.
avoid making pull-ups to reposition your vehicle.
use driver-side backing.
33. To make sure you always have overhead clearance, always be aware that:
an empty vehicle is taller than a loaded one.
re-paving or packed snow may have reduced the clearances since the heights were posted at bridges and overpasses.
some roads can cause a vehicle to tilt.
All of the above.
34. Before driving a vehicle with a dual air system, the air compressor should build up a minimum of _____ pressure in both the primary and secondary systems.
50 psi
10 psi
100 psi
75 psi
35. Slippery surfaces usually:
make it more difficult to stop.
can cause lack of steering power.
make it easier to stop.
None of the above.
36. If you need to make a large steering adjustment while using controlled braking, you should:
keep braking as hard as you can while steering.
pump the brakes and keep the wheels locked up.
release the brakes.
downshift and keep braking.
37. How far should you scan ahead when driving?
12-15 seconds
A quarter of a mile at highway speeds
One block at lower speeds
All of the above.
38. When going down long, steep downgrades, you should:
downshifting and then use the brakes.
only use the brakes.
try not to use the brakes.
rely solely on engine braking to reduce your speed.
39. Before transporting a sealed load, make sure:
that you don't exceed gross weight and axle weight limits.
that there is a picture of its contents.
that the load can be inspected.
All of the above.
40. To make the brakes work, air brakes use:
nitrogen.
hydraulic air.
carbon monoxide.
compressed air.
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