VA CDL COMBINATION PRACTICE TEST
11.
Which of the following is NOT a step in backing up with a trailer?
|
Checking the outside mirrors on both sides frequently
|
|
|
Backing quickly when the path is straight
|
|
|
Looking at your line of travel before you begin
|
12.
Poor weight balance:
|
improves handling.
|
|
|
can make vehicle handling more difficult.
|
|
|
increases fuel efficiency.
|
13.
Glad hands are used to:
|
connect the electrical lines from the truck or tractor to the trailer.
|
|
|
connect the brakes from the truck or tractor to the trailer.
|
|
|
connect the service and emergency air lines from the truck or tractor to the trailer.
|
14.
Who is responsible for inspecting the cargo?
|
The shipper
|
|
|
The person who loaded and secured the cargo
|
|
|
The driver
|
15.
When parking a trailer without spring brakes, it is very important for safety that you use wheel chocks. Why?
|
You may not notice a major leak in the service line until you try to put the brakes on.
|
|
|
if you don't use wheel chocks, supply air will be sent to the service line instead of going to charge the trailer air tanks.
|
|
|
The air could leak out of the trailer air tank, releasing its emergency brakes.
|
16.
What happens when the center of gravity of a truck moves higher up from the road?
|
The truck becomes easier to turn over.
|
|
|
The vehicle is more stable while turning.
|
|
|
It is easier it is to turn around corners.
|
17.
Most truck driver deaths in crashes result from:
|
truck rollovers.
|
|
|
off-tracking.
|
|
|
driving side-by-side with another truck.
|
18.
When should you use the hand valve to park a combination vehicle?
|
To park at loading docks.
|
|
|
When parking downhill.
|
|
|
Never.
|
19.
By pushing the trailer air supply control knob in, you:
|
shut the air off and put on the trailer emergency brakes.
|
|
|
supply the tires with air.
|
|
|
supply the trailer with air.
|
20.
When you are uncoupling a loaded trailer, lower the landing gear until:
|
the tractor frame is under the trailer.
|
|
|
it makes firm contact with the ground.
|
|
|
makes contact with the ground, and leave the trailer off the fifth wheel.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More