CDL AIR BRAKES PRACTICE TEST - WASHINGTON

11. A broken exhaust system:
can let poisonous carbon monoxide to leak into the cab.
poses no threat to the driver.
can improve fuel efficiency.
12. To avoid becoming a distracted driver you should:
not turn off all communication devices.
adjust all vehicle controls and mirrors while driving.
not engage in complex conversations with others.
13. Most heavy vehicles require ________ change gears.
double clutching
double shifting
single clutching
14. You are coming down a long, steep downgrade. Which of the following is a sign that your brakes may have started to fade?
You have to apply your brakes harder and harder to get the same stopping power.
The brake pedal feels spongy or goes to the floor.
You hear a loud "bang".
15. If your vehicle is hydroplaning, you should:
use the brakes to slow down.
accelerate to get through the water as quickly as possible.
release the accelerator and push in the clutch.
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