When referring to a commercial truck, you are not discussing a simple pickup truck with a cab and a bed. Instead, commercial trucks are larger, heavier vehicles used to tow goods and products. Every state has its definition of what is considered a commercial truck. In general, states classify commercial trucks by their gross vehicle weight rating (GVWR) or gross combination weight rating (GCWR): Light duty trucks: 6,000 to 14,000 pounds Medium duty trucks: 14,001 to 26,000 pounds Heavy duty trucks: 26,001 to 33,000 pounds, and greater Several types of commercial trucks exist, depending on what it is transporting. Some of the most common kinds of commercial trucks you may recognize on the road include: Box trucks Day cab trucks Package delivery trucks Car haulers Concrete mixers Dump trucks Flatbed trucks Federal rules exist to regulate the weight of commercial trucks on the road, and states also have relevant laws. This is why, on certain roadways, you’ll notice truck weigh stations. These ensure trucks on the road follow strict weight regulations.