CDL General Knowledge

240 practice questions, split into sets of 50

Real CDL General Knowledge exam: 50 questions, 80% to pass

Free CDL practice test for the CDL General Knowledge. The CDL general knowledge test has 50 questions — work through 240 CDL practice test questions in English and Spanish to learn exactly how many questions are on the CDL test and what to expect. Administered by FMCSA with an 80% passing score requirement. Key topics include Pre-trip vehicle inspection, Hours of Service (HOS) rules, Air brakes fundamentals, and more.