NC CDL PRACTICE TEST - GENERAL KNOWLEDGE
41.
Emergency lines are often coded with the color ___ to keep from getting them mixed up with the service line.
|
blue.
|
|
|
yellow.
|
|
|
white.
|
|
|
red.
|
42.
Most heavy-duty vehicles use:
|
triple air brake systems.
|
|
|
dual air brake systems.
|
|
|
single air brake systems.
|
|
|
pump-the-brake systems.
|
43.
Serious traffic violations include:
|
erratic lane changes.
|
|
|
excessive speeding.
|
|
|
driving a CMV without obtaining a CDL.
|
|
|
All of the above.
|
44.
The space under a heavily loaded vehicle can be very small. This can cause problems:
|
on dirt roads.
|
|
|
when crossing railroad tracks.
|
|
|
on unpaved yards.
|
|
|
All of the above.
|
45.
If your trucks has a high center of gravity, which of the following is true for curves?
|
You should slow down, as your truck can roll over at the posted speed limit for the curve.
|
|
|
You should travel at the posted speed limit.
|
|
|
Reduce your speed to a crawl.
|
|
|
None of the above.
|
46.
_________ is the distance it takes to stop in ideal conditions once the brakes are applied.
|
Stopping distance
|
|
|
Safe following distance
|
|
|
Perception distance
|
|
|
Braking distance
|
47.
_____ is a thin layer of ice that forms on road surfaces.
|
White ice
|
|
|
Black ice
|
|
|
Grey ice
|
|
|
Blue ice
|
48.
If your brakes fail while you are driving on a downgrade, you should:
|
use an escape ramp if it's available.
|
|
|
take the least hazardous escape route you can.
|
|
|
immediately start looking outside your vehicle for something to stop it.
|
|
|
All of the above.
|
49.
Which of these statements about using your mirrors is FALSE?
|
You should use your mirrors to spot overtaking vehicles.
|
|
|
When driving, you should check mirrors regularly to know where other vehicles are around you.
|
|
|
There are blind spots that your mirrors cannot show you.
|
|
|
None of the above.
|
50.
When crossing or entering traffic with a heavy vehicle:
|
you should allow more room if your vehicle is not loaded.
|
|
|
you may need a much larger gap to enter traffic than you would in a car.
|
|
|
you can count on other drivers to move out of your way so you can safely enter the flow of traffic.
|
|
|
None of the above.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More