CDL COMBINATION PRACTICE TEST VERMONT
11.
Older trailers do not have spring brakes. If the air supply leaks away:
|
there will be no emergency brakes.
|
|
|
the ABS won't work properly.
|
|
|
the trailer will stop normally.
|
12.
An item that is 15 feet long placed on a flatbed trailer should have at least:
|
2 tie-downs.
|
|
|
1 tie-down.
|
|
|
3 tie-downs.
|
13.
Do NOT use the parking brakes:
|
when you park for less than two hours.
|
|
|
if the brakes are very hot.
|
|
|
when you leave your vehicle.
|
14.
To prevent a rollover, the driver should:
|
make quick lane changes if possible.
|
|
|
drive slowly around corners, on ramps, and off ramps.
|
|
|
drive on the shoulder if possible.
|
15.
Which of the following is NOT a step in backing up with a trailer?
|
Checking the outside mirrors on both sides frequently
|
|
|
Looking at your line of travel before you begin
|
|
|
Backing quickly when the path is straight
|
16.
The use of brakes on a steep downgrade is:
|
the main braking factor.
|
|
|
much more effective than the engine braking effect.
|
|
|
a supplement to the braking effect of the engine.
|
17.
If a vehicle is equipped with ABS, when you start the engine:
|
the spring brakes will come on.
|
|
|
the ABS indicator light on the dash should come on and then turn off.
|
|
|
the wheels will lock up.
|
18.
For a cargo fire in a box trailer, you should:
|
open the doors immediately and use the fire extinguisher.
|
|
|
wait 10 minutes before opening the doors.
|
|
|
keep the doors shut.
|
19.
To stop a trailer skid, you should:
|
use the trailer hand brake to straighten out the rig.
|
|
|
use the brakes to slow down.
|
|
|
release the brakes to get traction back.
|
20.
Which of the following is true about the trailer hand valve?
|
It should be used only to test the trailer brakes.
|
|
|
The trailer hand valve works the trailer brakes.
|
|
|
All of the above.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More