Freight vehicles are specialized transportation units designed to carry goods and materials. They come in various forms, including trucks, trains, ships, and airplanes, each suited for different types of cargo and distances. These vehicles play a crucial role in the supply chain, ensuring that products reach their destinations efficiently. The design of freight vehicles focuses on maximizing cargo capacity while ensuring safety and reliability. For instance, trucks are often used for short to medium distances, while cargo ships are ideal for international shipping. Freight trains can transport large quantities over land, making them an economical choice for bulk goods.