Free Mississippi CDL Combination Practice Test 2026

Here are the three main classes of Commercial Driver’s Licenses (CDLs): A Class A CDL allows you to operate a combination vehicle with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the towed vehicle(s) has a gross vehicle weight rating (GVWR) of more than 10,000 pounds. Typically, this is the class of CDL you want for operating semi-trucks and tractor-trailers. A Class B CDL allows you to operate a single vehicle with a GVWR of 26,001 pounds or more or a combination vehicle where the towed vehicle has a GVWR of 10,000 pounds or less. This class of CDL is typically for operating large buses and straight trucks, including box trucks and most dump trucks. A Class C CDL allows you to operate other kinds of commercial vehicles that transport hazardous materials or at least 16 occupants (including the driver). This class of CDL is typically for operating small buses (including shuttle buses) or small trucks carrying hazardous materials.

To obtain a CDL of any of these three classes, you must pass the General Knowledge test on general commercial driving theory and a skills test in a vehicle that’s representative of the class of CDL you’re applying for. But to drive combination vehicles, that’s not all you must do. To drive combination vehicles, you must also pass the Combination Vehicles knowledge test on the theory of operating combination vehicles. Both of these knowledge tests are based on the official Mississippi Commercial Driver’s License Manual (Mississippi CDL Handbook 2026). You were likely advised to read this study guide (especially Chapter 6 on combination vehicles) to prepare for the Combination Vehicles knowledge test. But do you feel you could use more help to pass the test than the manual is giving you? If so, we can help you, just as we’ve helped thousands of other aspiring drivers.