The BMT was the inheritor of subway, elevated and surface rapid transit lines that had been built in Brooklyn and Queens by a variety of previous operators, mainly surface steam railroads to Coney Island and elevated railroads in more populated areas. The BMT identified most of its lines by the common names given to them, often going well back into the 19th century. Services on these lines usually had the same name as the branch line they operated on; for example, the line that the current F service runs on in Brooklyn was (and is) the Culver Line, and the BMT signed these trains "Culver Local" or "Culver Express".