Based on 2024 DC CDL manual

Questions
50
Mistakes allowed
10
Passing score
80%
Official DC General Knowledge: What to Expect
50
Total number of questions

40
Number of questions required to pass

80
Percentage required to pass

District of Columbia Commercial Driver's License
District of Columbia Commercial Driver's License

Take advantage of this powerful DC General Knowledge Practice Test before you schedule your written test. The practice test features 50 multiple choice questions based on the information found in the DC CDL Handbook. The questions are delivered randomly each time you take the exam. With unlimited attempts, it’s like taking a new test every time. Passing the General Knowledge Test is a requirement by all applicants looking to earn their CDL regardless of the type of commercial motor vehicle you plan on driving, i.e., don’t skip this test.

General Knowledge primarily covers topics on general trucking knowledge. Expect questions from safe vehicle operation to transporting cargo safely. Here’s a sneak peek at the type of questions you can expect on the exam.

When should you downshift?

What is a normal engine temperature range?

Start preparing before you visit your local District of Columbia DMV Service Center and you’ll be one step closer to earning your Commercial Driver’s License.