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.
The same amount of
More
Half
Less
Question 2
75% answer correctly
The locking jaws should close around the __________ of the kingpin.
Neck
Top
Shank
Base
Question 3
87% answer correctly
After hooking the trailer to the tractor you should check the fifth wheel connection by:
Backing the tractor slowly with the trailer brakes locked
Pulling the tractor ahead quickly with the trailer brakes unlocked
Pulling the tractor ahead slowly with the trailer brakes locked
Backing the tractor quickly with the trailer brakes unlocked