Please make sure you take all the tests and have a good understanding of the material before heading out to take the actual exam. We have 400 questions that pertain to the General Knowledge exam spread out over eight practice tests available free. All commercial drivers license applicants must pass the written general knowledge. If you have enough time to prepare, take each test on separate days and bring them to a quiet room, under. The CDL written knowledge tests are administered at all DMV Field Offices. It’s been proven that the more questions you answer before taking the exam, the better you will ultimately do on the final test. Our practice tests take the stress out of what questions you will encounter and makes passing a breeze. Our CDL General Knowledge Test (50 Questions) is an essential part of your preparation for the exam. These questions are all covered by the 2023 California CDL drivers’ manual, but it can be confusing and there is a lot of information in the book. If you fail you will not be able to retake the test on the same day, so you will have to make another trip.

You will have one hour to complete the General Knowledge test, and will be allowed to miss only 10 questions before you have to start the process over again. The general knowledge test consists of 50 multiple choice questions, and a score of 80% (40 out of 50) or better is required to pass.

In order to obtain a CLP (Commercial Learners Permit) which is the first step to getting a CDL, which you will need to operate any commercial vehicle, you will first have to take and pass the General Knowledge test.

California cdl general knowledge test