Overhead Railroads, also known as Els, are a type of railway system that uses overhead lines to power the locomotives. The overhead lines are suspended from poles or towers and provide electricity to the trains. This type of railway system is often used in urban areas, as it is more efficient than traditional railway systems. It is also safer, as it eliminates the risk of derailment due to contact with the ground. Additionally, it is more cost-effective, as it requires less maintenance and is easier to install.