12/03/2026-18/03/2026
[1] OpenArdenneMap is an open-source map style designed for the production of topographic maps for printing | © juminet | map data © OpenStreetMap Contributors.
Mapping
- After passing through the proposal process and being approved the ETCS Markers Tagging Scheme, an effort to unify the tagging of the markers used by the European Rail Traffic Management System, is available for everyone to use. Previously these were implemented using country-dependent schemes. The proponents are asking the mappers of countries where such systems are used to update the relevant wiki pages to include a redirect or a section unified with the new tagging scheme.
Community
- In their latest OpenStreetMap interview series, OpenCage spoke with Martin Ždila of Freemap Slovakia, the Slovak local chapter of the OpenStreetMap Foundation.
- The UN Maps team introduced its new community ambassadors, who plan different activities to bring OSM to local communities.
- KelsonV commented that the latest Pedestrian Working Group’s crosswalk corner tagging scheme is better than the way he had been doing it, so going forward he will use that scheme instead.
- Mateusz Konieczny has requested feedback for proposed preset changes in the iD tagging schema and shared a list of several currently being reviewed for potential inclusion.
- IXVG47QZ reported that last year Javi and Rebecca planned to bike-pack from the Austrian Alps into Asia using CoMaps, an OpenStreetMap-based mobile navigation app. ‘It has safely taken me to many countries in Asia and now in Oceania’, said Javi.
Local chapter news
- Habi has vibe-coded
a script that monitors the official Swiss municipal boundary data from swisstopo and compares it with the boundary data in OpenStreetMap. The script runs daily at 2 am UTC via GitHub Actions, and is accessible here. - Lyft, an American ride-sharing platform, has joined as the latest OSM US organisational member.
a script that monitors the official Swiss municipal boundary data from swisstopo and compares it with the boundary data in OpenStreetMap. The script runs daily at 2 am UTC via GitHub Actions, and is accessible OSM in action
- Vasily Ivanov is developing a mobile-friendly bike route web map for the Ertlav cycling club. You can view other members’ routes and upload your own tracks and photos. OpenStreetMap is used as the base map and the map itself runs on MapLibre.
- rbb24 used ► an OpenStreetMap-based map to visualise the locations of cycle paths that will be closed for renovations in the Oberspreewald-Lausitz district, Brandenburg, Germany.
a mobile-friendly bike route web 
Open Data
- The UNIPLU-BR dataset is the first unified and standardised national database of point precipitation (non-interpolated) in Brazil, consolidating raw data for 40 years and from five official monitoring networks: CEMADEN, INMET, ANA (Hidroweb), Telemetria, and ICEA. The dataset is available on Zenodo.org/EU.
Software
- The March Organic Maps update report includes release notes about improvements related to conditional speed limits, more detailed contours for China, split/smaller Tanzania regions, leather shops, and more. According to the developers this update took more time due to hotfixes and Google Play review.
- The project Geowiki provides a modular ecosystem for processing and visualising OpenStreetMap data, originally developed for OpenStreetBrowser. Its JavaScript library, geowiki-api, retrieves data via the Overpass API or OSM files, makes it usable in Leaflet, or exports it as GeoJSON, and can also act as an Overpass proxy server.
- vizsim has developed Missing Mapillary GraphHopper Routing for Germany, a web application that plans routes along roads without Mapillary imagery. The tool combines OpenStreetMap data with Mapillary coverage, highlights missing segments through colour-coded routes, and uses ► GraphHopper for routing.
- Eugene published a report about the results of the OsmAnd 2026 user surveys that were conducted recently.
- Zkir announced that UrbanEye3D version 2.0, a JOSM plugin for visualising OpenStreetMap’s 3D data, will be released at the end of March 2026.
Releases
- [1] Juminet, who has been developing their topographic style over nine years, has announced the release of OpenArdenneMap winter 2025–2026 version. OpenArdenneMap is open-source map style designed for the production of topographic maps for printing, available for use with QGIS and the Mapnik/cartoCSS libraries.
OSM in the media
- Jules Grandin, of Les Échos, explained the history of roundabouts ► in France and tries to answer the question of how many roundabouts there are in France using OpenStreetMap data.
- Ishaan Kocchar wrote, on Substack, about the triple axes of the ‘Digital Communities Trilemma’: openness, activity, and quality, in the context of OpenStreetMap and open data. Ishaan argued that the ‘big corporate consumers’ of the contributed data do not always provide any benefit to the OSM community or the project itself. They compared the Indian context of collaborative mapping with OSM with the local commercial market.
►Other “geo” things
- Coordinate Mapper is a professional-grade geospatial tool for plotting, analysing, and exporting coordinate data in multiple systems, including WGS84 and the UK National Grid.
- PGlite, a open-source project that allows you to run PostgreSQL locally in a browser, has added long-awaited support for the PostGIS extension. You can try it out in the browser or use it as an npm package.
- The Instituto Geográfico Nacional (Spain) is offering ► some courses on GIS and geoprocessing on its e-learning platform and using the OGC platform over 2026. The course about data management is open .
►Upcoming Events
| Country | Where | Venue | What | When |
|---|---|---|---|---|
OSMF Engineering Working Group meeting  | 2026-03-20 | |||
 | Olomouc | Přírodovědecká fakulta Univerzity Palackého | Missing Maps Day Olomouc 2026 | 2026-03-21 |
 | Perímetro Urbano Yopal | OSM video | Encuentro virtual: Introducción a OpenStreetMap | 2026-03-21 |
 | Tiranë | https://osmvideo.cloud68.co/user/ird-zqk-9vq-szt | OpenStreetMap Virtual Meetup Tirana | 2026-03-21 |
 | Domplatz Fulda | Frühlingsmapping 2026 | 2026-03-22 | |
| Missing Maps : Mapathon en ligne – CartONG [fr] | 2026-03-23 | |||
 | Bruxelles – Brussel | ULB Solbosch Campus – Building U – UB4.126 | Belgian Interuniversity Mapathon 2026 | 2026-03-23 |
| Stadtgebiet Bremen | Online und im Hackerspace Bremen | Bremer Mappertreffen | 2026-03-23 |
 | Pôle Numérique Brest Iroise | Rencontre OpenStreetMap et Territoires | 2026-03-24 | |
| Göttingen | Uni Göttingen | FOSSGIS-Konferenz 2026 | 2026-03-24 – 2026-03-27 |
 | Derby | The Brunswick, Railway Terrace, Derby | East Midlands pub meet-up | 2026-03-24 |
| UN Mappers Mappy Hour: UN Maps Community Ambassador Pilot Initiative | 2026-03-25 | |||
| Düsseldorf | Online bei https://meet.jit.si/OSM-DUS-2026 | Düsseldorfer OpenStreetMap-Treffen (online) | 2026-03-27 |
| Göttingen | Uni Göttingen, Fakultät für Geowissenschaften | FOSSGIS 2026 – OSM-Samstag | 2026-03-28 |
| Chemnitz | Neues Hörsaalgebäude, TU Chemnitz | Chemnitzer Linux-Tage 2026 | 2026-03-28 – 2026-03-29 |
| Local Chapters & Communities Congress 2026 | 2026-03-28 | |||
| Vélo Utile | rencontre OSM | 2026-03-28 | |
 | Mira-Bhayander | DBT Café, Mira Road | OSM Mumbai Mapping Party No.8 (Western Line – North) | 2026-03-28 |
| Hannover | Kuriosum | OSM-Stammtisch Hannover | 2026-03-30 |
| Saint-Étienne | Zoomacom | Rencontre Saint-Étienne et sud Loire | 2026-03-30 |
| Stuttgart | Stuttgart | Stuttgarter OpenStreetMap-Treffen | 2026-04-01 |
| Le Schmilblick, Montrouge | Réunion des contributeurs de Montrouge et du Sud de Paris | 2026-04-02 | |
| नई दिल्ली | Jitsi Meet (online) | OSM India – Monthly Online Mapathon | 2026-04-05 |
Note:
If you like to see your event here, please put it into the OSM calendar. Only data which is there, will appear in weeklyOSM.
This weeklyOSM was produced by MatthiasMatthias, Raquel IVIDES DATA, Strubbl, Andrew Davidson, TrickyFoxy, barefootstache, derFred, izen57, mcliquid.
We welcome link suggestions for the next issue via this form and look forward to your contributions.
