CDL Combination Vehicles Practice Test Results

Question 1
87% answer correctly
You`re pulling triples and turn suddenly. Which trailer is most likely to turn over?
Rear
All are equally likely to turn over
Middle
Front
Question 2
53% answer correctly
When hooking up a tractor to a trailer, the trailer is at the proper height when:
The coupling surface of the trailer is just above the middle of the tractor fifth wheel
The trailer dolly wheels are just barely off the ground when fully extended
The kingpin is just below the middle of the tractor fifth wheel
The coupling surface of the trailer is just below the middle of the tractor fifth wheel
Question 3
73% answer correctly
Where are the shut off valves?
At the front of trailers
At the back of trailers
At the back of the tractor
In the tractor cab