An Automatic Coupler is a device used in rail transport to connect train cars without the need for manual intervention. This technology allows for quicker and safer coupling and uncoupling of train cars, enhancing operational efficiency. Automatic couplers are designed to engage automatically when two train cars come close together, ensuring a secure connection. These couplers are commonly used in modern freight and passenger trains, replacing older manual systems. The most widely known type is the Janney coupler, which has become a standard in the industry. By streamlining the coupling process, automatic couplers contribute to smoother train operations and improved safety for railway workers.