CDL Doubles and Triples Practice Test Results

Question 1
86% answer correctly
During your pre-trip inspection of your double rig you inspect the converter dolly. Its air tank drain valves should be __________ and the pintle hook should be __________.
Open, latched
Open, free
Closed, free
Closed, latched
Question 2
41% answer correctly
How can you check to make sure that trailer height is correct before coupling?
Raise the landing gear completely
Use both side view mirrors
All of these are correct
Use a landmark like a nearby tree
Question 3
65% answer correctly
When making a lane change, check your mirrors:
When starting the lane change
Before signaling the lane change
All of these are correct
After completing the lane change