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 ( 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
National Expressways ( Korean: 고속국도; Hanja: 高速道路; RR: Gosokgukdo) or Expressways ( Korean: 고속도로; Hanja: 高速道路; RR: Gosokdoro)
| South–North |  | |
|---|---|---|
| West–East | ||
| Belt | ||
| Metropolitan Area | ||
| Branch | ||
| Planned | ||
| Abolished | ||
General National highways
General National highways ( Korean: 일반국도; Hanja: 一般國道; RR: Ilbangukdo) or National highways ( Korean: 국도; Hanja: 國道; RR: gukdo)
| South-North |  | |
|---|---|---|
| West-East | ||
†: Hypothetical national highways on the territory of North Korea in the case of reunification | ||
Special Metropolitan City roads and Metropolitan City roads
Special Metropolitan City roads and Metropolitan City roads ( Korean: 특별시도·광역시도; Hanja: 特別市道·廣域市道; RR: Teukbyeolsido·Gwangyeoksido)
Special Metropolitan City roads
Special Metropolitan City roads ( Korean: 특별시도; Hanja: 特別市道; RR: Teukbyeolsido) are the highway in the special city ( Seoul).
Metropolitan City roads
Metropolitan City roads ( Korean: 광역시도; Hanja: 廣域市道; RR: Gwangyeoksido) are the highway in the metropolitan city.
- Metropolitan City roads of Busan
- Metropolitan City roads of Daegu
- Metropolitan City roads of Incheon
- Metropolitan City roads of Gwangju
- Metropolitan City roads of Daejeon
- Metropolitan City roads of Ulsan
Local highways
Local highways ( Korean: 지방도; Hanja: 地方道; RR: Jibangdo)
State-funded local highways
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)
General local highways
General local highways ( Korean: 일반지방도; Hanja: 一般地方道; RR: Ilbanjibangdo
| State-funded (2-digits) | 13 301 | |
|---|---|---|
| Gyeonggi (300s) | ||
| Gangwon (400s) | ||
| N. Chungcheong (500s) | ||
| S. Chungcheong (600s) | ||
| N. Jeolla (700s) | ||
| S. Jeolla (800s) | ||
| N. Gyeongsang (900s) | ||
| S. Gyeongsang (1000s) | ||
| Jeju (1100s) | ||
Yearbook of road statistics by Ministry of Land, Infrastructure and Transport, 2017 | ||
Si roads
Si roads ( Korean: 시도; Hanja: 市道; RR: Sido) are the highways in the cities (Si).
Gun roads
Gun roads ( Korean: 군도; Hanja: 郡道; RR: Gundo) are the highways in the counties (Gun).
Gu roads
Gu roads ( Korean: 구도; Hanja: 區道; RR: Gudo) are the highways in the districts (Gu).