LOUISIANA CDL COMBINATION PRACTICE TEST
11.
Dual tires:
|
should not come in contact with each other.
|
|
|
should always come in contact with each other.
|
|
|
should come in contact with each other whenever possible.
|
|
|
are dangerous.
|
12.
During a walk around inspection of a combination vehicle, drivers should check that:
|
all locking pins are present and locked in place.
|
|
|
the locking jaws are around the shank.
|
|
|
the glide plate is securely mounted to the trailer frame.
|
|
|
All of the above.
|
13.
Combination vehicles usually:
|
require more driving skill than single CMVs.
|
|
|
are shorter than single than single CMVs.
|
|
|
are easier to drive than single than single CMVs.
|
|
|
All of the above.
|
14.
If you get stuck on the railroad tracks, the first thing you should do is:
|
try to move your vehicle until you see the train.
|
|
|
immediately get out of the cab and move away from the tracks.
|
|
|
stay in your vehicle and call 911.
|
|
|
scream for help.
|
15.
When backing, as soon as you see the trailer getting off the proper path, you should:
|
turn the top of the steering wheel in the opposite direction of the drift.
|
|
|
to keep a firm grip on the steering wheel and continue backing.
|
|
|
turn the top of the steering wheel in the direction of the drift.
|
|
|
None of the above.
|
16.
To avoid rollbacks when you start, you should:
|
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
|
|
|
put on the parking brake whenever necessary.
|
|
|
release the parking brake only when you have applied enough engine power.
|
|
|
All of the above.
|
17.
The emergency air line:
|
causes the tractor protection valve to close when the emergency line loses pressure.
|
|
|
supplies air to the trailer air tanks.
|
|
|
controls the emergency brakes on combination vehicles.
|
|
|
All of the above.
|
18.
How do you find out how many seconds of following distance you have?
|
Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
|
|
|
Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
|
|
|
Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
|
|
|
None of the above.
|
19.
Inspecting the fifth-wheel does NOT include:
|
checking that there are no cracks in the frame.
|
|
|
checking for missing or damaged parts.
|
|
|
backing until the fifth-wheel just touches the trailer.
|
|
|
making sure that the fifth wheel is in the proper position for coupling.
|
20.
If you try to couple when the trailer is too low:
|
it might not couple correctly.
|
|
|
the tractor could roll away.
|
|
|
the tractor may strike and damage the trailer nose.
|
|
|
All of the above.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More