Before you will be allowed to operate heavy and hazardous vehicles for commercial purposes, you must have obtained a commercial driving license (CDL). There are processes every commercial driver must undergo in order to be issued CDL. Firstly, you must take and pass the CDL general knowledge skill test, as well as any other CDL test depending on the area of specialization. In order to write and pass this CDL exam, you need to prepare and equip yourself with the necessary knowledge and practical question that will help you to pass. This book gives you the opportunity to equip yourself and get familiar with as many questions as possible. These questions are similar questions you will see on your CDL exam. You are advised to have this book in addition to your CDL manual. This book contains different sections of the CDL test question to help you prepare for your exam and become a professional commercial driver. The questions contained in this book include; General knowledge test Air brake test Combination vehicle test, School bus test Hazardous material test Tank vehicle test Double and Triple test.Pre-trip inspection test Passenger vehicle testThe total questions from each section are about 430. The objective of this book is to help you master as many questions as possible because this is the similar questions you will face on your CDL exam day.