In Partnership with Lemmon Public Library

FREE SD CDL Air Brakes Marathon 2018

Got a couple of hours to spare? This South Dakota CDL Air Brakes Marathon is a new practice test that contains a combination of all 119 questions that we have available for this SD endorsement. If you select a wrong answer, we’ll remember that question and will display it to you again at the very end of the Marathon 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. As you work your way through the Marathon, you’ll see that unlike the other South Dakota CDL practice tests there are no explanations and no hints here. 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!

Your Progress
We're preparing your marathon...
Report a problem
Back to the SD menu