South Korea - colour-coded map of maximum permitted train speeds. See which corridors support 200, 250, or 300+ km/h and where the network slows to regional speeds.
South Korea - every railway line colour-coded by maximum permitted line speed, from slow regional branches to very high-speed corridors above 300 km/h. Speed data reflects the infrastructure limit, not the operating speed of any specific service. High-speed lines (200 km/h and above) are typically purpose-built or heavily upgraded; slower sections reflect older infrastructure, tight curves, or mixed-traffic constraints. Use the speed range filter to isolate specific bands — for example to identify only lines capable of 250 km/h or above, or to pinpoint bottleneck sections on otherwise fast corridors.
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