Highway system in South Korea

South Korea has seven highway systems.
 * 1) National expressways
 * 2) General national highways
 * 3) Special Metropolitan City roads and Metropolitan City roads
 * 4) Local highways
 * 5) Si roads
 * 6) Gun roads
 * 7) Gu roads

National Expressways
National Expressways or Expressways

General National highways
General National highways or National highways

Special Metropolitan City roads and Metropolitan City roads
Special Metropolitan City roads and Metropolitan City roads

Special Metropolitan City roads
Special Metropolitan City roads are the highway in the special city (Seoul).

Metropolitan City roads
Metropolitan City roads 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

State-funded local highways
State-funded local highways (, shortly )

General local highways
General local highways (

Si roads
Si roads are the highways in the cities (Si).

Gun roads
Gun roads are the highways in the counties (Gun).

Gu roads
Gu roads are the highways in the districts (Gu).