An interlocking system is a method used in various fields, such as transportation and construction, to ensure safety and efficiency. In railways, for example, it refers to a mechanism that controls signals and track switches to prevent accidents by coordinating train movements. This system helps manage the flow of trains, ensuring they do not collide or derail. In construction, an interlocking system can refer to building materials designed to fit together securely, such as interlocking bricks or pavers. These materials create stable structures without the need for mortar, making assembly easier and more efficient. This system enhances durability and simplifies maintenance.