Heavy-duty vehicles are large, powerful machines designed for transporting heavy loads and performing tough tasks. They include trucks, buses, and construction equipment, often equipped with strong engines and durable frames to handle demanding conditions. Common examples are 18-wheeler trucks, dump trucks, and bulldozers. These vehicles are essential in various industries, such as construction, logistics, and agriculture. They are built to carry significant weight and operate in challenging environments, making them crucial for moving materials and equipment. Heavy-duty vehicles often require special licenses and training for operators due to their size and complexity.