-converted-space"> infrastructure. It has the world's highest fiber-optic
broadband penetration, resulting in the world's fastest internet connections
with speeds up to 1 Gbps. Seoul Station is the main terminal of the KTX high-speed
rail and the Seoul Subway is the world's second most highly used with the longest circular line in the world. It is considered the
world's best subway system noted
for its cleanliness, ease of use, arrival times accurate within seconds and
technological innovations such as 4G
LTE, WiFi, DMB and WiBro accessible in all stations and moving
subway cars. It is unique in having all stations installed with automatic platform gates for safety. Seoul shares a unified
public transportation system with neighboring Incheon and Gyeonggi allowing
