CO CDL General Knowledge Marathon
What to expect on the actual CO CDL exam
- 40correct answers to pass
- 80%passing score
Need one final boost? This Colorado CDL General Knowledge Marathon is a massive practice test that contains all 693 questions from our database for this CO endorsement. If you make a mistake, we’ll remember that question and will display it to you again at the end of the exam until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the state’s “regular” tests, but before the “Exam”. It might take some time, but you can do this!
CO CDL Handbook
View the most recent (2023) official CO CDL Handbook.Explore