6CDL flashcard contains about 400 commercial driver's license test question and answers. Questions cover so many areas such as general knowledge test questions, pre-trip inspection test questions hazard materials test questions and others. You will find in this book real-time CDL test questions that will help you in answering the question on CDL test correctly. This book is divided into eight chapters they are General knowledge test questions and answers Pre-trip inspection test questions and answers Air brakes test questions and answers Combination vehicles test questions and answers Double and triple combination vehicles test questions and answers Hazard material test questions and answers Passengers and school bus vehicle test questions and answers and Tank vehicle test question and answers. Each chapter contains questions of a particular endorsement to help test takers pass their endorsement test at first try.