An articulated lorry 🚛, also known as a semi-trailer truck or tractor-trailer, is a heavy-duty vehicle used for transporting goods. It consists of a cab or truck unit that pulls a separate trailer, which is connected by a pivoting joint or "articulation." This design allows for better maneuverability and flexibility when navigating tight spaces or making turns. Articulated lorries are commonly seen on highways and are essential for long-haul transportation of cargo.