heavy-duty vehicle

A heavy-duty vehicle is a truck, bus, or other motor vehicle designed to carry substantial loads or perform demanding work.

In regulatory contexts, the classification typically depends on gross vehicle weight rating, with vehicles exceeding 26,000 pounds (about 11,800 kg) in the United States falling into this category.

Heavy-duty vehicles include semi-trucks, dump trucks, concrete mixers, and large buses.

The new emissions standards apply to all heavy-duty vehicles sold after 2027.