How Nikaaso picks a metro gate

1. Where the data comes from

Station locations, line routes, numbered gate entrances, lift entrances and parking come from OpenStreetMap (OSM). Local mappers maintain OSM and its data is open under the Open Database License. Destinations (hospitals, colleges, malls, markets, government offices, railway stations and similar) come from OSM too.

We don't pull everything at once. A small batch of stations is refreshed every day, and each station is re-checked about once a month. Every page shows the date its data was pulled.

2. How the gate is chosen

For each destination we measure the straight-line distance from every numbered gate of nearby stations to the edge of the destination (for a campus or hospital we use its outline, not its centre). The closest gate wins. Walking time assumes about 4.5 km/h plus 30% for road layout, so treat it as an estimate.

If a closer station doesn't have gate data yet, we hold the page back rather than give you the wrong station.

3. What gets a page

We only publish places people actually travel to: well-known or large places, within about a 20-minute walk of a gate. Small clinics and coaching centres are left out. New pages are added gradually as data is checked.

4. Checked in person

Pages marked ✓ Checked were confirmed on site, with the date shown. Everything else is marked From map data.

5. Corrections

Gates close for construction and new exits open. If a page is wrong, use the "Wrong gate? Tell us" link on it. It opens an OpenStreetMap note at that exact spot, so local mappers can fix the source data, and Nikaaso picks up the fix on its next refresh of that station.

Nikaaso is independent and not affiliated with DMRC, NMRC or any metro operator. For official notices, check the operator's website or station announcements.