KOBA transport map data

Copyright: OpenStreetMap contributors
https://www.openstreetmap.org/copyright

The transport databases in this directory are made available under the
Open Database License (ODbL) 1.0:
https://opendatacommons.org/licenses/odbl/1-0/

Individual adapted database downloads:
poznan.json
warszawa.json
gdansk.json
gdynia.json
wroclaw.json
lodz.json
krakow.json

The JSON files contain actual OpenStreetMap road/rail geometry, named stations,
roundabouts and route refs, filtered to the city district-map extent plus 1 km.
Paths are simplified to 10 metres, clipped, rounded and joined at degree-two
endpoints. No routes are invented. Source dataset date, source URL, retrieval
date and original-file SHA-256 are available in each JSON's source object.

Transport data is a static orientation aid. It is not live traffic, a route
planner, a timetable or a guarantee that OSM tags reflect every recent change.
District boundaries have their own separate municipal-source licences.