Open-Source Software and Data Licences
Quick answer: Live Accident Tracker is built with 11 open-source libraries (MIT, BSD-2-Clause and Apache-2.0), OpenStreetMap-based routing and maps, and official open data from the UK Department for Transport, the US NHTSA, the WHO and city governments. Each is listed below with the exact version used and a link to its licence.
Open-source libraries
Loaded from the jsDelivr, unpkg and cdnjs CDNs at fixed versions. The copyright notices are kept in the distributed files; the full licence text is at each link.
| Project | Version | Licence | Used for |
|---|---|---|---|
| Leaflet | 1.9.4 | BSD-2-Clause | Every map on the site |
| Leaflet.markercluster | 1.4.1 | MIT | Clusters of nearby reports and crash records |
| Leaflet.heat | 0.2.0 | BSD-2-Clause | Heatmap view of the live map |
| Leaflet.Locate | 0.79.0 | MIT | "Show my location" button |
| Apache ECharts | 5.5.1 | Apache-2.0 | Charts in the crash explorers, hotspots, road and route histories and the trends tool |
| H3 (h3-js) | 4.1.0 | Apache-2.0 | Hexagon cells on the hotspot and road history maps (the Python h3 library prepared the cells offline) |
| Turf.js | 7.1.0 | MIT | Area filter in the city explorer; route length, simplification and buffer |
| Uppy | 4.18.3 | MIT | Photo and video upload on the report form |
| Chart.js | 4.4.3 | MIT | Trend charts on country and statistics pages |
| globe.gl | 2.34.5 | MIT | 3D globe view |
| hls.js | 1.5.15 | Apache-2.0 | Playing official traffic camera streams |
Routing and maps
| Service | Licence or terms | Use |
|---|---|---|
| OSRM routing engine, via the FOSSGIS public server | BSD-2-Clause (software); OpenStreetMap data ODbL | Routes for the route accident history tool. Requested only when you press the button, at most one request per second, under the FOSSGIS usage policy. |
| OpenStreetMap | Open Database License (ODbL) 1.0 | Map data behind the base maps, routing and place search. © OpenStreetMap contributors. |
| CARTO basemaps | CARTO attribution terms | Dark map tiles. |
Official datasets
Code licences do not cover data. Each dataset keeps its publisher's licence; downloads from this site repeat it inside the file. See download data and the methodology.
| Dataset | Licence | Used on |
|---|---|---|
| Department for Transport — Road Safety Data (STATS19) | Open Government Licence v3.0 | Accident hotspots, UK council pages, UK road histories, route history (Great Britain) |
| NHTSA — Fatality Analysis Reporting System (FARS) | US government work (public domain) | US interstate histories, US state trends, route history (United States) |
| WHO road traffic death estimates via the World Bank | CC BY 4.0 | Country death rates and trends |
| City open-data portals (Chicago, New York City, Austin and others) | Each portal's own terms, linked on every city page | City crash maps and the crash pattern explorer |
Spotted a missing credit or a wrong version? Tell us and it will be corrected. The site's own compiled datasets are published under CC BY 4.0 as described on the download page.