CDL Doubles and Triples Practice Test Results

Question 1
52% answer correctly
When might you consider disconnecting the steering axle brakes to help keep a tractor straight?
When driving on a grade
Never
When the road is slippery
Whenever necessary
Question 2
83% answer correctly
You disconnect the dolly from the front trailer while it is still under the rear trailer. What will happen?
It will collapse
The dolly tow bar will flip up
Nothing
The trailers will decouple
Question 3
94% answer correctly
When inspecting the converter dolly coupling to the rear trailer, how much space should there be between the upper and lower fifth wheel?
1 inch
None
1/2 inch
Varies depending on the load