Highway systems of South Korea

South Korea has seven highway systems.^[1]

National expressways (Korean: 고속국도; Hanja: 高速國道; RR: Gosokgukdo)
General national highways (Korean: 일반국도; Hanja: 一般國道; RR: Ilbangukdo)
Special Metropolitan City roads and Metropolitan City roads [ko] (Korean: 특별시도·광역시도; Hanja: 特別市道·廣域市道; RR: Teukbyeolsido·Gwangyeoksido)
Local highways (Korean: 지방도; Hanja: 地方道; RR: Jibangdo)
Si roads (Korean: 시도; Hanja: 市道; RR: Sido)
Gun roads (Korean: 군도; Hanja: 郡道; RR: Gundo)
Gu roads (Korean: 구도; Hanja: 區道; RR: Gudo)

National Expressways

1

National Expressways (Korean: 고속국도; Hanja: 高速道路; RR: Gosokgukdo) or Expressways (Korean: 고속도로; Hanja: 高速道路; RR: Gosokdoro)

1

General National highways (Korean: 일반국도; Hanja: 一般國道; RR: Ilbangukdo) or National highways (Korean: 국도; Hanja: 國道; RR: gukdo)

Special Metropolitan City roads and Metropolitan City roads (Korean: 특별시도·광역시도; Hanja: 特別市道·廣域市道; RR: Teukbyeolsido·Gwangyeoksido)

30

20

Special Metropolitan City roads (Korean: 특별시도; Hanja: 特別市道; RR: Teukbyeolsido) are the highway in the special city (Seoul).

11

Metropolitan City roads (Korean: 광역시도; Hanja: 廣域市道; RR: Gwangyeoksido) are the highway in the metropolitan city.

Local highways (Korean: 지방도; Hanja: 地方道; RR: Jibangdo)

13

State-funded local highways (Korean: 국가지원지방도; Hanja: 國家支援地方道; RR: Gukgajiwonjibangdo, shortly Korean: 국지도; Hanja: 國支道; RR: Gukjido)

301

General local highways (Korean: 일반지방도; Hanja: 一般地方道; RR: Ilbanjibangdo

Si roads (Korean: 시도; Hanja: 市道; RR: Sido) are the highways in the cities (Si).

Gun roads (Korean: 군도; Hanja: 郡道; RR: Gundo) are the highways in the counties (Gun).

Gu roads (Korean: 구도; Hanja: 區道; RR: Gudo) are the highways in the districts (Gu).