CDL Combination Vehicles Practice Test Results

Question 1
87% answer correctly
You`re pulling triples and turn suddenly. Which trailer is most likely to turn over?
Rear
Middle
Front
All are equally likely to turn over
Question 2
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 the trailers to become decoupled
It can cause you to come to a sudden stop
It can make the trailer skid
Question 3
89% answer correctly
How much space should exist between the lower and upper fifth wheel plates?
Approx. 1/2 inch
Approx. 1/4 inch
None
Approx. 1 inch