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RunFlex

Data attributions

RunFlex is built on open data. This page credits every source it uses and records the licence each one is used under.

Some of these licences require this acknowledgement. All of them get it, including the ones that ask for nothing, because a runner deciding whether to trust a "well lit" verdict is entitled to know where the answer came from.

Last reviewed 24 October 2026.

Maps and routing

OpenStreetMap. Map geometry, street names, and the lit=* tags that are the primary signal behind every lighting verdict RunFlex gives.

© OpenStreetMap contributors, available under the Open Database Licence (ODbL 1.0).

Street-lamp positions also come from OpenStreetMap, imported from Geofabrik extracts, and lighting queries outside imported regions are answered live by the Overpass API and its community mirrors.

Mapbox. Map tiles, walking directions, geocoding and place search. Mapbox data is © Mapbox and © OpenStreetMap contributors — see Mapbox attribution.

GeoNames. The town and city suggestions on the launch-list form on runflex.app.

Place names from GeoNames, available under the Creative Commons Attribution 4.0 Licence.

Street lighting inventories

Where a highway authority publishes or releases its lighting asset register, RunFlex uses it to confirm that a street is lit — and, where the authority records switching regimes, to warn when lights are switched off part way through the night.

Open Government Licence v3.0

The following are used under the Open Government Licence v3.0:

Contains public sector information licensed under the Open Government Licence v3.0.
  1. The council confirmed that the information may be re-used under the Open Government Licence.

Other licences

Corrections

If you maintain one of these datasets and something here is wrong — the licence, the attribution wording, or the way the data is described — please write to rob@runflex.app and it will be corrected.

If you are a highway authority and would like your lighting data used, that is very welcome. RunFlex asks for three things: where each unit is, what type it is, and when it is switched on. The third is the one no other source can supply, and it is what lets an app tell someone honestly that a street is lit now but goes dark at midnight.

What this page does not cover

RunFlex does not use lighting data to make a safety guarantee. A confirmed lit verdict means the data says those streets are lit at that time; it is a routing preference, not a promise about any street on any night. Where the data cannot answer, the app says so rather than guessing.