CDL AIR BRAKES PRACTICE TEST - DISTRICT OF COLUMBIA
6.
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.
|
7.
If your brakes fail while you are driving on a downgrade, you should:
|
use an escape ramp if it's available.
|
|
|
immediately start looking outside your vehicle for something to stop it.
|
|
|
take the least hazardous escape route you can.
|
|
|
All of the above.
|
8.
You should drain the air tanks completely. If water and oil collect in the air tanks:
|
your brakes could become hard to press.
|
|
|
your brakes could fail.
|
|
|
your brakes could heat up.
|
|
|
None of the above.
|
9.
If the low pressure warning signal doesn't work:
|
you could lose air pressure and you would know it.
|
|
|
in dual systems the stopping distance will be decreased.
|
|
|
this could cause sudden emergency braking in a single-circuit air system.
|
|
|
None of the above.
|
10.
In vehicles with air brakes, the brake pedal:
|
let the
air out of the spring brakes.
|
|
|
controls the air pressure applied to the brakes.
|
|
|
tells you how much pressure is in
the air tanks.
|
|
|
pumps air into the air storage
tanks.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More