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CDL DOUBLES TRIPLES PRACTICE TEST ILLINOIS

11. Too little weight on the driving axles can cause:
poor traction.
poor visibility.
longer stopping distances.
mechanical damage.
12. Drivers transporting cargo are responsible for:
making sure the cargo is properly secured.
inspecting the cargo.
recognizing overloads.
All of the above.
13. Most heavy-duty vehicles use:
pressure brakes.
air brakes.
solid brakes.
hydraulic brakes.
14. When going down a steep downgrade, you should primarily brake using:
the service brakes.
the parking brake.
the emergency brake.
the braking effect of the engine.
15. You are more at risk of being fatigued:
when stopping periodically during long trips.
after getting more than 8 hours of sleep.
when driving alone.
when driving during the day.
16. When backing a trailer, you should turn the steering wheel to the right to make the trailer go left (or vice versa). Once the trailer starts to turn, you should:
turn the wheel more  in the direction you want to go.
keep backing up.
turn the wheel the other way to follow the trailer.
None of the above.
17. Blocking is used to:
protect the cargo from weather.
protect people from spilled cargo.
keep the cargo from sliding.
All of the above.
18. Air brakes:
can improve fuel efficiency.
are prohibited on larger vehicles.
are an effective way to stop large and heavy vehicles.
should be used only when driving on wet roads.
19. ABS helps you:
lock your wheels.
decrease your average speed.
decrease your overall stopping distance.
keep the wheels from locking up.
20. If your ABS fails:
your tires might grab unexpectedly and you could lose control.
you will still have normal brake functions.
the first step is to get the vehicle off the road and stop.
you will have no brake function, and could lose control.
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