South Korea Metro Maximum Speeds — Permitted Speed Limits Across the Subway Network

South Korea metro maximum speeds map. Colour-coded permitted speed limits across the subway and rapid transit network — comparable line by line.

South Korea maximum permitted operating speed across every metro and subway line. Metro speeds typically range from 60–80 km/h on older systems with tight curves and short station spacing, up to 120–140 km/h on modern automated lines. Fully automated driverless systems often achieve higher average speeds due to more precise acceleration and braking. The speed map enables comparison of operational performance between metro lines and shows how rapid transit investment has evolved over time.