CDL Combination Vehicles Practice Test Results

Question 1
56% answer correctly
The emergency air line:
Supplies air to the trailer air tanks
Carries air controlled by the footbrake or trailer handbrake
Provides a backup route from the air compressor to the air tanks
Supplies air to the footbrake or trailer handbrake
Question 2
78% answer correctly
You`re hauling an air brake equipped trailer that was manufactured in 1971. Which of the following is true?
A special exemption is required to take this trailer on the highway
The trailer is not likely to have spring brakes
The trailer will be harder to stop than a more modern trailer
The trailer is not likely to have an air tank compressor
Question 3
85% answer correctly
Why is it important to ensure that the fifth wheel is properly greased?
To prevent steering problems
To ensure good hose connections
To ensure a secure connection to the trailer
To ensure good electrical connections