CDL PRACTICE TEST (SC) - GENERAL KNOWLEDGE TEST

11. The space under a heavily loaded vehicle can be very small. This can cause problems:
on dirt roads.
on unpaved yards.
when crossing railroad tracks.
All of the above.
12. When you have to back, you should always try to back toward the driver's side because:
it feels more natural.
backing toward the left side is more dangerous.
you can see better and watch the rear of your vehicle out the side window.
None of the above.
13. Drivers should use their horn when needed, however they must be aware that using the horn:
is prohibited on interstate highways.
damages your hearing.
can startle other drivers.
consumes the battery.
14. You should schedule trips:
between the hours of 9 a.m. and 10 p.m.
between the hours of 6 a.m. and 6 p.m.
for the hours you are normally awake.
between the hours of 11 a.m. and midnight.
15. Your chances of avoiding an accident depend upon how well you take action. When you are about to hit an obstacle ahead, you should remember that:
leaving the road is more risky than hitting another vehicle.
you can almost always turn to miss an obstacle more quickly than you can stop.
stopping is always the safest thing to do in an emergency.
All of the above.
16. The one-way check valve:
keeps air from going out if the air compressor develops a leak.
keeps your wheels from locking up when you brake hard.
supplies air to the trailer air tanks.
keeps the axles in place.
17. Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
the parking brake should never used to slow the vehicle.
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
shifting into neutral may help slow the vehicle.
All of the above.
18. Which of the following is NOT a hazard?
An escape ramp
Work zones
A cardboard box on the road
A freeway/highway exits that go downhill
19. If you have to drive off the road to avoid a collision, you should:
avoid braking.
keep one set of wheels on the pavement, if possible.
stay on the shoulder until your vehicle has come to a stop.
All of the above.
20. Loads that are over-length, over-width and/or overweight:
may require a police escort.
require special transit permits.
may require special equipment such as “wide load” signs, flags and flashing lights.
All of the above.
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