Illustration of Truck Classes
December 26, 2011
There are eight truck classes, categorized by the gross vehicle weight rating (GVWR) that the vehicle is assigned when it is manufactured. These categories are used by the trucking industry and many government agencies to classify trucks. The pictures below show examples of some of the different types of trucks that would be included in each class.
Examples of Trucks in Each Truck Class

Source
Oak Ridge National Laboratory, Center for Transportation Analysis, Oak Ridge, TN.