CDL General Knowledge Practice Test Results

Question 1
73% answer correctly
Why is it important to use a helper when backing?
To let you know when you`ve backed far enough
To provide another set of eyes to avoid blind spots
It isn`t important to use a helper when backing
To warn traffic and pedestrians that you`re backing
Question 2
47% answer correctly
There are __________ classes of hazardous materials
3
12
9
6
Question 3
49% answer correctly
What is the minimum tread depth for all tires excepting front tires?
5/8 inch
2/32 inch
7/16 inch
4/32 inch