Electrified railways use electric power to operate trains, providing a more efficient and environmentally friendly alternative to diesel engines. They typically rely on overhead wires or electrified tracks to deliver electricity, allowing trains to travel faster and with less pollution. These systems are common in urban transit networks, such as subways and trams, as well as in long-distance services. Countries like Japan and Germany have extensive electrified railway networks, which help reduce greenhouse gas emissions and improve air quality while offering reliable transportation options for passengers and freight.