CDL Combination Vehicles Practice Test Results

Question 1
75% answer correctly
After connecting to a trailer, how can you ensure that the connection is secure?
Lock the trailer brakes and pull backward slowly then inspect the connection
Release the trailer brakes and pull forward slowly then inspect the connection
Pull forward quickly to stress the connection
Lock the trailer brakes and pull forward slowly then inspect the connection
Question 2
56% answer correctly
The emergency air line:
Carries air controlled by the footbrake or trailer handbrake
Supplies air to the footbrake or trailer handbrake
Provides a backup route from the air compressor to the air tanks
Supplies air to the trailer air tanks
Question 3
56% answer correctly
The emergency air line:
Supplies air to the footbrake or trailer handbrake
Provides a backup route from the air compressor to the air tanks
Supplies air to the trailer air tanks
Carries air controlled by the footbrake or trailer handbrake