Istanbul Proposed Metro Lines — Planned Subway Routes and Future Underground Expansions

Istanbul planned and proposed metro lines. Future underground routes and rapid transit expansion projects before construction begins.

Istanbul metro and subway lines formally proposed or in active planning: future underground corridors announced, studied or included in urban transport master plans but not yet under construction. Shows where cities plan to extend rapid transit coverage — new orbital lines connecting suburbs without routing through the city centre, extensions to areas beyond the existing network and entirely new metro systems in cities currently without subway.

Istanbul has 567 proposed railway segments including 330 railway, 78 tram and 159 metro.

  • Istanbul — Metro Map
  • Istanbul — Metro Under Construction
  • Istanbul — Proposed Metro Lines
  • Istanbul — Metro Stations Map
  • Istanbul — Metro Speed Map
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Last update: 2026-05-07

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🇹🇷Istanbul
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🇹🇷Istanbul – Metro Proposed Map

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