CDL Combination Vehicles Practice Test Results

Question 1
88% answer correctly
Large combination vehicles that are empty take __________ time to stop than those that are fully loaded.
Less
The same amount of
Half
More
Question 2
75% answer correctly
The locking jaws should close around the __________ of the kingpin.
Shank
Top
Base
Neck
Question 3
90% answer correctly
How would a driver supply air to trailer air tanks?
Activate the service line
Push in the trailer air supply valve
Activate the air generator
Pull out the trailer air supply valve