Flatcars are a type of freight train car designed with a flat, open deck. They are primarily used to transport large and heavy items that cannot fit in standard enclosed railcars. Common cargo includes construction materials, machinery, and vehicles. The absence of sides and a roof allows for easy loading and unloading, often using cranes or forklifts. These cars come in various sizes and configurations, including those with adjustable decks or specialized fittings. Flatcars are essential in the railroad industry, facilitating the movement of goods across long distances. Their versatility makes them a vital component of freight transportation systems.