SD CDL General Knowledge Exam Simulator 2025

Want to be a commercial truck driver in “The Mount Rushmore State”? Then you need to pass the South Dakota CDL exam. To prepare for that test, we invite you to take our SD CDL General Knowledge Practice Test Simulator.

Unlike our traditional CDL practice tests, this test simulator is designed to closely mimic the testing environment you will encounter on exam day.  This means no answer explanations, no feedback, no hints, and a randomized set of 50 questions with each attempt.

You will need to answer 80% or more of the questions correctly to pass.  You can take this test an unlimited number of times. We also recommend you take full advantage of the test’s features, such as the progress tracker and the powerful Missed Questions Bank.

You can expect questions covering key general knowledge concept found in the SD CDL Manual.  Questions cover such topics as controlling a vehicle, space management, mountain driving, hot weather driving and more.

Here are few sample questions you can expect to encounter:

In South Dakota, what is the maximum legal blood alcohol concentration (BAC) for a CDL holder operating a commercial vehicle?

Where should you place reflectors when stopped on a divided highway?

When approaching a railroad crossing in a commercial vehicle in South Dakota, what is the minimum distance to stop before the tracks?

When should you downshift an automatic transmission?

Pass this practice test, and you will be one step closer to earning your CDL and getting paid to drive by such scenic wonders as Mount Rushmore and the Black Hills National Forest. So don’t procrastinate, take this practice test now.