CDL Combination Vehicles Practice Test Results

Question 1
63% answer correctly
Suppose a trailer separates from the tractor and pulls apart the air lines. The trailer brakes would apply causing which of the following to occur?
The tractor would lose air pressure through the parted air lines
The tractor brakes would apply
The tractor brakes would lock up
There would be no impact to the tractor brakes
Question 2
49% answer correctly
Rearward amplification array(the "crack-the-whip" effect) is greater in combinations where there are __________ and __________ trailers.
More, shorter
Fewer, shorter
More, longer
Fewer, longer
Question 3
90% answer correctly
Which of the following statements about combination vehicles is true?
They`re heavier, longer and require more driving skill than single commercial vehicles
Single commercial vehicles are heavier, longer and require more driving skill than combination vehicles
Driving combination vehicles is no different than driving single commercial vehicles
All of these are true