High Quality Content by WIKIPEDIA articles! In the United States, commercial truck classification is determined based on the vehicle's gross vehicle weight rating (GVWR). The classes range from 1-8. It also done more broadly under the US DOT Federal Highway Administration (FHWA) Vehicle Inventory and Use Survey (VIUS) standards, which groups Class 1 and 2 as "Light Duty", 3-5 as "Medium Duty", and 6-8 as "Heavy Duty". Light duty Toyota Tacoma The Class 1 truck gross vehicle weight rating (GVWR) ranges from 0 to 6,000 pounds (0 to 2,722 kg). Examples of trucks in this class include the Toyota Tacoma and GMC Sonoma.