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 10 September 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 across the United Kingdom 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.
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.
- North Somerset Council — street lighting asset inventory, including
part-night switching regimes. Released under the Environmental Information Regulations 2004, reference 7218344.
- North Yorkshire Council — street lighting asset inventory.
- Darlington Borough Council —
- London Borough of Camden —
- London Borough of Barnet —
Two further inventories are prepared under the same licence and are not yet in use. They are listed here so the credit is already right on the day they are, rather than a week afterwards:
- Leeds City Council —
- Department for Infrastructure (Northern Ireland) —
street lighting assets, covering the whole of Northern Ireland.
- Redcar and Cleveland Borough Council — street lighting asset
inventory, including part-night timeswitch regimes. Released under the Environmental Information Regulations 2004, reference EIR/2627/0203. The council stated that there are no restrictions on re-use of the data.
Other licences
- City of Boston —
Streetlight Locations, made available under the Open Data Commons Public Domain Dedication and Licence (ODC-PDDL). No attribution is required; it is given anyway.
- San Francisco Public Utilities Commission — streetlight locations for
SFPUC-owned lights, published by the City and County of San Francisco. Lights owned by PG&E are not included, because they are not published.
- Ordnance Survey — a central London extract of the National
Geographic Database street light features, used under Ordnance Survey premium data terms. Contains OS data © Crown copyright and database right.
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.