CDL GENERAL KNOWLEDGE TEST (SOUTH DAKOTA) - PRACTICE TEST

21. You should avoid driving through flowing water of deep puddles if possible. If not, you should:
press the accelerator and increase the engine and gear speed to the rpm required by road conditions.
gently apply the brakes, increase engine rpm and cross the water while keeping light pressure on the brakes.
wait until the engine has cooled before crossing the water.
set out reflective triangles to warn other traffic.
22. How many drinks per hour can be handled by the liver?
About 4 drinks per hour.
About 3 drinks per hour.
About 1 drink per hour.
About 2 drinks per hour.
23. If you let air out of hot tires:
the tires will cool off much sooner.
air pressure will increases, causing the tires to blow out.
as the tire cools, the air pressure will be too low.
None of the above.
24. To prevent rolling back when you start, if you have a manual transmission you should:
never the parking brake.
over-accelerate.
partly engage the clutch before you take your right foot off the brake.
use the lowest reverse gear.
25. Too little weight on the driving axles can cause:
mechanical damage.
poor traction.
longer stopping distances.
poor visibility.
26. ABS:
is an addition to your normal brakes.
allows you to brake harder.
replaces your normal brakes.
should only be used on dry roads.
27. Which of the following statements is true?
The weight of a cargo van does not change its height.
The weight of a cargo van changes its height.
An empty van is lower than a loaded one.
The heights posted at bridges and overpasses are always correct.
28. If you are driving a vehicle with manual transmission that requires double clutching to change gears, the first step of the basic method for shifting up is to:
Release the clutch and press the accelerator at the same time.
Release the accelerator, push in the clutch and shift to neutral at the same time.
Pump the brakes and release the clutch.
Push in the clutch and shift into a higher gear at the same time.
29. Service brakes should:
only be checked by a mechanic.
be checked before each trip.
always be checked before applying the brakes.
All of the above.
30. When driving in hot weather, drivers should inspect tires:
every 4 hours or every 200 miles.
every 2 hours or every 100 miles.
every hour or every 50 miles.
every 3 hours or every 75 miles.
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