Regional bus

• Yellow Bus : First Number (Areas where buses are operating) / Second Number(serial number (1~))
• Blue Bus : First Number (Number of departure area) / Second Number (Number of arrival area) / Third Number (serial number (0~))
• Green Bus : First Number (Number of departure area) / Second Number (Number of arrival area) / Third Number (serial number (11~))
• Red Bus : First Number (9) / Second Number (Number of departure area) / Third Number (serial number (00~))
• Customized Bus : First Number (8) / Second Number (departure area) / Third Number (Number of arrival area) / Fourth Number (serial number (0~))
• Airport Bus : First Number (6(0~7)) / Third Number (serial number (00~))
• Midnight Bus : First Number (N) / Second Number (Number of departure area) / Third Number (Number of arrival area)

Seoul buses information

• 0 area (Major Districts : Jung-gu, Jongno-gu, Yongsan-gu / Extension Line : none)
• 1st area (Major Districts : Seongbuk-gu, Gangbuk-gu, Dobong-gu, Nowon-gu / Extension Line : Gyeonggi-do Yangju-si, Uijeongbu-si, Dongducheon-si, Pocheon-si)
• 2nd area (Major Districts : Seongdong-gu, Gwangjin-gu, Dongdaemun-gu, Jungnang-gu / Extension Line : Gyeonggi-do Guri-si, Namyangju-si, Gapyeong-gun, Yangpyeong-gun)
• 3rd area (Major Districts : Songpa-gu, Gangdong-gu / Extension Line : Gyeonggi-do Gwangju-si, Hanam-si, Icheon-si, Yeoju-si)
• 4th area (Major Districts :Seocho-gu, Gangnam-gu / Extension Line : Gyeonggi-do Seongnam-si, Yongin-si, Anseong-si)
• 5th area (Major Districts : Geumcheon-gu, Dongjak-gu, Gwanak-gu / Extention Line : Gyeonggi-do Anyang-si, Gunpo-si, Uiwang-si, Ansan-si, Gwacheon-si, Suwon-si, Hwaseong-si, Osan-si, Pyeongtaek-si)
• 6th area (Major Districts : Yangcheon-gu, Gangseo-gu, Guro-gu, Yeongdeungpo-gu / Extension Line : Incheon Metropolitan City, Gyeonggi-do Gimpo-si, Bucheon-si, Gwangmyeong-si, Siheung-si)
• 7th area (Major Districts : Eunpyeong-gu, Seodaemun-gu, Mapo-gu / Extension Line : Gyeonggi-do  Goyang-si, Paju-si, Yeoncheon-gun)

Fare & Transfer System

• One-time boarding charges a flat-rate fare where you can pay by cash or transportation card
• Fares for Seoul city buses and Maeul (village) buses can be paid by T-money, U-Pass, EB Card, Cashbee, and Korail Membership Card. Deferred payment transportation cards, which are compatible with T-Money and U-Pass, can be used as well.
• Seoul city buses offer a free ride for a maximum of 3 children under the age of 6 so long as they are accompanied by a guardian. Legal free riders who are defined in the Passenger Transport Service Act of Korea are also able to ride for free.
• Seoul, Gyeonggi-do, Incheon buses and metropolitan subways are under the Metropolitan Integrated Fare System, so they charge a basic fare up to 10km. Using Seoul metropolitan buses, Gyeonggi-do general buses, non-stop deluxe buses, Incheon buses, and red buses for more than one transfer will cost a basic rate up to 30 km, and you will be charged an extra 100 won for each additional 5 km (based on the adult fare).
• Multiple-passenger boarding and a transfer discount are applicable only to city buses, and this offer can be approved only if the same passengers travel to the same destination.