The practice exams are graded instantly with feedback and correct answers provided. They are available in both English and Spanish. The practice tests and cheat sheets you will find here are based on the 2022 California Commercial Driver License Manual. Thousands of prospective license holders utilize our practice tests and California CDL cheat sheets every day to help better understand the questions they will face on their written tests. DMV-Written-Test strives to help everyone pass their California DMV CDL test on their first attempt.