CDL Practice Test Results

Question 1
26% answer correctly
Converter dollies:
Usually require a fifth wheel converter
Often do not have spring brakes
All of these are true
They have little braking power
Question 2
76% answer correctly
For air brakes, the cut-out level is:
The average air pressure maintained in the air storage tanks
The level at which the air compressor will start pumping air into the air storage tanks
The minimum air pressure for the air storage tanks
The level at which the air compressor will stop pumping air into the air storage tanks
Question 3
89% answer correctly
When is the proper time to use the trailer handbrake to straighten out a trailer that`s jackknifing?
When you start to recover from the jackknife
As soon as you start to jackknife
In the middle of the jackknife
Never