MASSACHUSETTS CDL AIR BRAKES PRACTICE TEST

6. Too little weight on the driving axles can cause:
poor traction.
mechanical damage.
longer stopping distances.
poor visibility.
7. The application pressure gauge:
shows how much air pressure is being applied to the brakes.
tells you how much pressure is in the air tanks.
protects the tank and the rest of the system from too much pressure.
stops the compressor from pumping air.
8. While driving, you should use your mirrors to:
check where the rear of your vehicle is while you make turns.
check the condition of the tires and cargo.
know where other vehicles are around you.
All of the above.
9. If stopped on a hill, how can you start moving without rolling back?
Partly engage the clutch before you take your right foot off the brake, put on the parking brake if necessary.
Release the parking brake before you have applied enough engine power to keep from rolling back.
Press on the gas pedal, even if you have to roll back a little.
None of the above.
10. When should you be particularly careful about high winds?
When emerging from a tunnel
When driving in winter
When going downhill
When driving at night
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