Passenger carriages are specialized vehicles designed to transport people on trains. They come in various types, including economy, first-class, and sleeper carriages, each offering different levels of comfort and amenities. These carriages are equipped with seating, lighting, and sometimes restrooms, ensuring a comfortable journey for travelers. Typically, passenger carriages are connected to a locomotive, which provides the necessary power to move the train. They are an essential part of the railway system, facilitating travel between cities and regions. Modern passenger carriages may also include features like Wi-Fi and dining services to enhance the travel experience for passengers.