The Downeaster service began in 2001 and is operated by Amtrak for the Northern New England Passenger Rail Authority, linking Boston North Station with Portland and Brunswick in Maine. Railfans recording the line at crossings and stations have shared its distinctive horn blasts online for years, where the clips circulate among train enthusiasts and model railroad communities. Because the route is closely tied to coastal New England travel, the horn has become a recognizable shorthand for that journey, separate from generic freight train horns heard elsewhere in the United States.