Seoul Buses are public transit buses operated by the Seoul Metropolitan Government and/or private bus operators.
There are four types of buses:
Route numbers specify area divisions. For trunk and branch buses, the first digit indicates the area where the route begins, and the second digit indicates where the route ends. For rapid buses, the first digit is always 9, and the second digit indicates the area in which the route begins. The first digit of circulation buses indicates the area in which the bus circles. Routes that begin with an 8 are holiday or rush-hour only branch buses. For all lines, any remaining digits identify individual routes.
The following list shows the numbering system of routes based by area. This system was created to facilitate recognition of route outlines.
Most buses in South Korea are domestic models and are made by Daewoo, Hyundai, or Hankuk Fiber. Buses are either 9 m (29.53 ft) or 10.6 m (34.78 ft) to 11 m (36.09 ft) Buses use either compressed natural gas, electric batteries, or a combination of both. In the past, diesel buses also ran until retirement, and Daewoo buses measuring 12 m (39.37 ft) in length and Iveco articulated buses measuring 18 m (59.06 ft) in length were in service on trunk buses from 2004 until 2014.