RailsMapsMetro
Subway and metro systems by country. Track active segments, lines under construction, and proposals — from the world's biggest systems to newer networks still taking shape.
Data from OpenStreetMap — thorough where the community is active, thinner where it isn't · Updated 2026-04-15
Global insights
Top networks by segment count
Top 5 countries — Metro
Continental breakdown
Metro segments by continent
Asia
45,189
Europe
33,411
North America
15,865
South America
3,111
Australia & Oceania
329
Africa
306
98,211
Active segments
66
Countries with data
2,399
Under construction
1,078
Proposed
3,477
In the pipeline (3.5% of active network)
Australia
Fastest build rate: 60.8% · 200 under construction
Turkey
Most proposed lines: 344 proposed
Top countries
By continent
Build activity
41
Countries actively building
33
Countries with proposals