Passenger lines refer to the routes and services provided by transportation companies that carry people from one location to another. These lines can include various modes of transport, such as trains, buses, ferries, and airlines. Each passenger line typically has a set schedule, designated stops, and ticketing options to accommodate travelers. In the context of rail travel, passenger lines are often operated by companies like Amtrak in the United States or Eurostar in Europe. These services aim to provide safe, efficient, and comfortable travel experiences for passengers, connecting cities and regions while promoting tourism and commerce.