Rapid transit refers to a high-capacity public transportation system designed to move large numbers of passengers quickly and efficiently. It typically includes modes such as subways, light rail, and elevated trains, which operate on dedicated tracks to minimize delays caused by road traffic. Rapid transit systems are often found in urban areas, providing a reliable alternative to cars and buses. These systems are characterized by frequent service, limited stops, and high-speed travel, making them ideal for commuting. Cities like New York City, Tokyo, and London have extensive rapid transit networks that help reduce congestion and promote sustainable transportation options.