CDL Combination Vehicles Practice Test Results

Question 1
73% answer correctly
Why is it a good idea to lock the glad hands together when not pulling a trailer?
All of these are true
Saves wear on the dummy coupler
Keeps water and dirt out of the lines
Maintains air tank pressure by keeping air from escaping
Question 2
75% answer correctly
After connecting to a trailer, how can you ensure that the connection is secure?
Pull forward quickly to stress the connection
Lock the trailer brakes and pull backward slowly then inspect the connection
Lock the trailer brakes and pull forward slowly then inspect the connection
Release the trailer brakes and pull forward slowly then inspect the connection
Question 3
86% answer correctly
Which of the following is a good reason to not use the trailer hand valve while driving?
It can cause the trailer bakes to fail
It can cause you to come to a sudden stop
It can make the trailer skid
It can cause the trailers to become decoupled