bus line

plural bus lines

1. roadA specific route followed by public buses to transport passengers between designated stops.

   As for the distance, he'd have to learn the bus lines, figure out where to transfer downtown.

   1997, David Simon, Edward Burns, The Corner, A Year in the Life of an Inner-City Neighborhood, page 302

   2 more examples

   Long before the street car system was installed here there was a bus line which ran from State street to "Mendsen's carriage factory" once an hour.

   1912, Josiah Seymour Currey, Chicago: Its History and Its Builders, A Century of Marvelous Growth · Volume 4, page 315

   Irving's main lifeline these days is Metro's 70 Grand bus, which stops a couple of blocks from her rooming house in St. Louis. Easily the busiest bus line in the Metro transit system, buses rumble up and down Grand Boulevard every 10 minutes throughout much of the day. Even then, passengers are forced to stand in the aisle once they board.

   2009 March 29, David P. Dillard, “TRANSPORTATION: PUBLIC URBAN AND PASSENGER : UNITED STATES: CITIES: SAINT LOUIS, MISSOURI: Metro Cuts Mean Regular Riders Will Be Changing Their Ways”, in net-gold (Usenet)

2. roadA bus company or service operating those buses along fixed paths.