State of the Map 2024 – Call for Venues Open!

The Call for Venues for State of the Map (SotM) 2024 is now open! Build a team, shape your idea, and submit your proposal to host SotM 2024!

SotM Logo

Everyone is welcome to submit their bids for next year’s conference. We highly encourage community proposals from places where global SotM is yet to happen.

Read the guidelines and selection criteria on the OSM Wiki page to start planning your application for next year’s conference venue. 

This early call gives you the greatest flexibility over dates you can pick in 2024. Please observe when other OpenStreetMap-related events (like FOSS4G and local SotMs) will take place in order to avoid possible clashes with other relevant conferences for the community.

You can start your bid by visiting https://wiki.openstreetmap.org/wiki/State_of_the_Map_2024/Call_for_venues

Key Dates

  • Call for venues open: 31st March 2023
  • Deadline of bids: 31st May 2023
  • Announcement of venue 2024: August 2023

Need help? 

The SotM Working Group is available for any further clarifications! Please contact via email: sotm [at] openstreetmap.org as early as possible so that we can provide guidance, if needed.

We look forward to collaborating with you.

SotM Organising Committee

Sign up for event updates and follow us @sotm!

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Do you want to translate this and other blog posts in your language…? Please email communication@osmfoundation.org with subject: Helping with translations in [your language]

The State of the Map conference is the annual, international conference of OpenStreetMap, organised by the OpenStreetMap Foundation. The OpenStreetMap Foundation is a not-for-profit organisation, formed in the UK to support the OpenStreetMap Project. It is dedicated to encouraging the growth, development and distribution of free geospatial data for anyone to use and share. The OpenStreetMap Foundation owns and maintains the infrastructure of the OpenStreetMap project. The State of the Map Organising Committee is one of our volunteer Working Groups.

OpenStreetMap was founded in 2004 and is an international project to create a free map of the world. To do so, we, thousands of volunteers, collect data about roads, railways, rivers, forests, buildings and a lot more worldwide. Our map data can be downloaded for free by everyone and used for any purpose – including commercial usage. It is possible to produce your own maps which highlight certain features, to calculate routes etc. OpenStreetMap is increasingly used when one needs maps which can be very quickly, or easily, updated.

Local Chapters Congress – Live & Online in 2022!

By: Local Chapters & Communities Working Group (LCCWG) 

The Local Chapters & Communities Working Group (LCCWG) tries to organize a yearly in-person and a yearly virtual Local Chapters Congress. For obvious reasons, events in 2020 and 2021 could only happen virtually. But in 2022 we managed to do both! This post covers about both the virtual and IRL (in real life) congresses.

State of the Map Florence – Community Meet IRL!

On August 19, at the State of the Map in Florence, Italy, the LCCWG hosted an in-person (woo hoo!) mini-Congress. If you missed it, here are some of the ideas that arose from a fruitful and fun discussion. We hope you will consider joining the next session in late 2023!

We started the session by dividing up into continents – and every continent was represented! It turned out many people from the same regions didn’t know one another. 

Next we heard Allan Mustard, Tobias Knerr and Jean-Marc Liotier talk about the role of chapters from the OpenStreetMap Foundation perspective. 

Next we passed out two colors of sticky notes and asked participants to share things that have worked in their communities or challenges they have faced. There were many great answers, and many common threads.

Where have you seen success gathering community?

In terms of having an organization, some groups found that having several dedicated chat rooms on specific topics helpful. Other groups found it simpler to move organizational stuff to open source software like Collabora, LibreOffice, LimeSurvey. Many folks had success linking with their local government and holding local events, like State of the Map. Other common threads were around community building and mapping projects. Community building around the world seems to have more success when the focus is on building relationships, working together with other communities and having regular informal meetings. All participants strive to keep their spaces open and welcoming. 

Often communities are contacted by local authorities who want to help keep OSM data up to date. This can lead to partnerships for mapping projects, such as mapping health infrastructure for covid, mapping buildings and addresses, following up on Notes and just new mappers heading out to contribute on their own. 

What’s Difficult About Organizing Community?

On the other sticky note, folks shared things that were more difficult. A general theme seemed to be growing pains – how do you get started? Once you have a little group, how do you formalize? When you become a Local Chapter, how do you find new goals for the community to work towards? In some regions, getting volunteer work at all is difficult. In others, it’s mostly about keeping people on board for longer.

Another common difficulty was the institutional and financial challenges associated with having a local group. How do you finance your organization? How do you handle commercial activities? In our session there were discussions about the limits to paid mapping by local chapters, the growing pains moving from an informal to a formal group, the procedure to become a Local Chapter and when requests from outsiders or handling management as a volunteer can be too time consuming. 

Other challenges included how to decide between open channels Vs closed channels (where many folks tend to be already, like WhatsApp), having too many different channels, getting visas to attend global events, engaging volunteers in low income countries, and reconvening in-person after COVID.

When it comes to mapping – often that’s the least of a Chapter’s worries! Though in some countries, incentives for volunteers and lack of resources like decent internet connections are a barrier. Another challenge can be to get people facing the same direction to achieve common mapping goals, or to decide on which mapping tools to use. And there’s more and more quality open data that allows you to improve OpenStreetMap – but it is so much work to put it to use.

Local Chapters Congress – Community Meets Online

On November 12, 2022 the global OSM community gathered for the 3rd annual virtual Local Chapters and Communities Congress 2022. Leaders and members of various OSM communities, whether they are officially recognized Local Chapters of the OSM Foundation or just a regular user group of OSM mappers, came together to share stories and learn from each other.

There were lightning talks, presentations by LCCWG members and lots of great discussions. OSM Italia presented a fun video about the SotM in Florence. Adrés Gómez talked about how the Colombia community is successfully dealing with huge amounts of Notes – and how the project is expanding to other countries. Janet Chapman talked about Crowd2Map Tanzania. Then we heard about the new Discourse forum that lives at community.openstreetmap.org. To close off, we heard from a bunch of communities from around the globe.

You can check out the full agenda on the wiki and watch presentations from the day on this youtube  playlist


The OpenStreetMap Foundation is a not-for-profit organisation, formed to support the OpenStreetMap Project. It is dedicated to encouraging the growth, development and distribution of free geospatial data for anyone to use and share. The OpenStreetMap Foundation owns and maintains the infrastructure of the OpenStreetMap project, is financially supported by membership fees and donations, and organises the annual, international State of the Map conference. Our volunteer Working Groups and small core staff work to support the OpenStreetMap project. Join the OpenStreetMap Foundation for just £15 a year or for free if you are an active OpenStreetMap contributor.

Join OSM Open Source Development with GSoC 2023

In 2023, OpenStreetMap will participate once more as a mentoring organization in Google Summer of Code, a program to bring new contributors into Open Source software development. Originally targeted at students, the program now also accepts people new to Open Source in general.

We particularly welcome potential participants who are already involved with OpenStreetMap. You ideally have done some mapping and had an opportunity to get to know the community. You have used some of the software around OpenStreetMap and would now like to get involved in its development.

With the support of an experienced mentor, you will, over the course of a few months, add features to one of the Open Source tools which power the OSM ecosystem. Your work will improve software used daily by the OSM community, and Google will provide you with an attractive stipend for the summer. You will find more information about the program in general on the Google Summer of Code 2023 website.

Because of OSM’s diverse software ecosystem, you can choose from projects involving a variety of tools, technologies and programming languages. OSM tools planning to participate this year include editing software such as iD or JOSM, routing software such as OSRM or Valhalla, and the Nominatim search engine.

Applications are open March 20 to April 4 – but please get in contact with your mentors early so you can use the chance to improve your application. Visit our GSoC 2023 wiki page to learn what we’re looking for and browse our project ideas.

Learn more about GSoC 2023 with OSM


The OpenStreetMap Foundation is a not-for-profit organisation, formed to support the OpenStreetMap Project. It is dedicated to encouraging the growth, development and distribution of free geospatial data for anyone to use and share. The OpenStreetMap Foundation owns and maintains the infrastructure of the OpenStreetMap project, is financially supported by membership fees and donations, and organises the annual, international State of the Map conference. Our volunteer Working Groups and small core staff work to support the OpenStreetMap project. Join the OpenStreetMap Foundation for just £15 a year or for free if you are an active OpenStreetMap contributor.

Welcome TomTom, our first Platinum Corporate Member

We are happy to announce that TomTom is joining us as our first platinum tier corporate member. Their contribution provides crucial direct financial support to our operations and infrastructure, which is essential to accompany the growth and ensure the long-term sustainability of the world’s largest crowdsourced geospatial project.

People create data in OpenStreetMap, excited that open map data will be widely useful and used. Many more people will be interacting with OpenStreetMap data through TomTom’s user base, and some of them will be curious about our community and interested to help make it better. We welcome all such contributions, whether someone is fixing a small issue on the map affecting them, or as the first step of a life long mapping passion.

We are grateful for the wide extent of TomTom’s support of OpenStreetMap, which extends beyond financial contributions: they actively participate in working groups, the Advisory Board, and local OpenStreetMap communities. TomTom’s recognition of the importance of the OpenStreetMap data they use is a testament to the value our project provides. We hope this inspires other corporate partners to join as members to support OpenStreetMap.

Read more from TomTom on their announcement.

International Women’s Day: Meet Geoladies PH

Tomorrow is International Women’s Day (IWD)–the perfect time to celebrate* the many women in OSM, as well as the contributions they make to the map and the community. And what better way to do this than to put a couple of these ladies in the spotlight: Geoladies PH.

(*Psssst: want to join other members of the community in honoring IWD? Scroll down to the end of this post for a list of celebratory mapping events you can still sign up for.)

The Philippine Geoladies group was established in 2019, when they held their first workshop at the Pista ng Mapa conference in Dumaguete. They “advocate for community diversity, collaborative participation, and affirmative spaces, especially for women and under-represented communities”. We had a chat with the core team to learn about all the activities they’re doing to work towards this goal.

Charmyne Mamador is leading Ausome Maps, a project funded by She Leads and She Inspires (SLSI). The SLSI program was launched by the Humanitarian OpenStreetMap Team’s (HOT) Open Mapping Hub – Asia Pacific at the end of 2021 and helped 100 women in multiple countries grow as leaders within their open mapping communities. Over the course of 6 months, they received training, mentoring and guidance in creating and leading a community project. At the end of the program, ten of these projects received funding, including Ausome Maps. The goal of Ausome is to map schools with special education (SPED) classes and therapy clinics in the Philippines. This will help the families of differently abled children find the support they need.

Another core member of Geoladies PH is Leigh Lunas, known as the group’s drone expert. She teaches students how to code and fly drones. Currently she is involved in the Bahaghari Maps initiative, aimed at creating usable trail maps for Philippine hikers.

Feye Andal is Geoladies’ Disaster Response Mapper and serves as a Regional Ambassador for YouthMappers in the Asia Pacific region. (Fun fact: in 2022, 45% of YouthMappers were women.) Recently Feye has been working with the UPRI (University of the Philippines Resilience Institute) YouthMappers on mapping and validating the areas affected by the Turkey and Syria earthquake.

Next up is Geolady Jen Alconis. One of her main projects has been to map all publicly accessible breastfeeding stations in the Philippines. This way, she could give back to her breastfeeding support group, but also to fellow mothers in general.

Geoladies PH member Andi Tabinas is the founder of Mental Health AWHEREness PH, a non-profit organization promoting mental health awareness through information, education, communication, and mapping mental health facilities and services.

Last but not least is Arnalie Vicario. Like her fellow ladies, she’s an advocate for diversity and inclusion, as well as for sustainable living and, at the end of 2022, she was one of the women elected to the OpenStreetMap Foundation Board.

Interested in learning even more about Geoladies PH? Check out their Facebook page.

Feel like meeting the ladies in real life? They regularly organize sessions and workshops to empower women to map. Tomorrow, on International Women’s Day, you will find them at the YouthMappers-organized Everywhere She Maps event in Manila (as well as online).

Of course, this is not the only mapping event dedicated to IWD. Below are some more opportunities to celebrate our female community members.

Want to find out how the rest of the world is honoring this special day? For the third year, Geochicas and Feminist International have created a global map of actions and activities around International Women’s Day. If you would like an event to be added, please share the details including the exact location with the Geochicas Twitter account.

Who map the world? Girls!

EWG Project Deadline: “Adding the Ability to Mute Users”

The Engineering Working Group (EWG) would like to announce the deadline for the following project: Adding the ability to mute users on the openstreetmap.org website.

Project Deadline

The  deadline for submitting a proposal will be March 13, 2023. After the submission deadline the EWG will resolve to award the bid within 2 weeks.

About the Project

Users who receive unwanted messages to their openstreetmap.org message inbox currently have to report the message writer and wait for an administrator to take action. This feature will make it possible for anyone to painlessly mute (ignore) private messages from another user.

For more details about the project, including how to apply and proposal requirements, please see the the Engineering Working Group Project Funding Repository on Github. Click on  “Ability to mute other users” under the Projects section or visit this link for a list of deliverables.

Understanding the Project Funding Process

Before submitting a proposal make sure to also read the Engineering Working Group’s Project Funding Proposal Framework for a general overview of the process. Should you have any questions about the funding process please reach out to the Engineering Working group at engineering@osmfoundation.org.

About the Engineering Working Group

The Engineering Working Group is charged with, among other things, handling software development paid for by the OSMF, putting out calls for proposals on tasks of interests, offering a platform for coordination of software development efforts across the OSM ecosystem, and managing OSM’s participation in software mentorship programs. 

The Engineering Working Group meets once every two weeks. Meetings are open to all and all are welcome. Questions? Please send an email to engineering@osmfoundation.org. We are a small group and are still welcoming new members!


The OpenStreetMap Foundation is a not-for-profit organisation, formed to support the OpenStreetMap Project. It is dedicated to encouraging the growth, development and distribution of free geospatial data for anyone to use and share. The OpenStreetMap Foundation owns and maintains the infrastructure of the OpenStreetMap project, is financially supported by membership fees and donations, and organises the annual, international State of the Map conference. Our volunteer Working Groups and small core staff work to support the OpenStreetMap project. Join the OpenStreetMap Foundation for just £15 a year or for free if you are an active OpenStreetMap contributor

Starting 2023 on the OSMF Board

In January, the new OSMF board met to discuss the work each of us wants to drive forward in 2023. What emerged was an initial, work in progress agenda for the year, with a good distribution of focus areas. Below are a few sentences directly from each of us on what we are thinking and how and where we want to contribute in 2023.

We welcome your input and participation. Contact us directly or, if you are an OSMF Member, join our monthly Board meeting. We will continue to develop and refine our ideas, including in a half day screen to screen session, soon.

Mikel:

Fundraising is my top priority, to support our core staff and infrastructure in a sustainable way. We will have dedicated fundraising campaigns across diversified sources including community small donors, public and private grants, and corporate sector engagement. Secondly, I will focus on making OSMF a great place to work, continuing to implement the necessary processes and structures, and supporting them to be successful. Finally, as secretary, I want to give the OSMF a professional, responsive communication tone. The more I think about it, the more I believe that excellent communication is the key to so much – across fundraising, reputation building, and community growth.

Sarah:

I’d like to focus this year on making the daily operations of OSMF run more smoothly, so that the board has more time in the future to focus on strategic matters. This includes yearly planning and budget, smoothly running communications to and from the board and a financial plan where the majority of our operational cost is covered through regular income. I also hope to get some wisdom from our working groups to understand how we can help each other to spread the work more efficiently, and on more shoulders.

Guillaume:

  • moving our corporate registration to EU
  • improving communication
  • facilitate process improvements for OSM tagging, like liquid democracy
  • financial planning and budgeting
  • increasing the diversity of fundraising sources
  • with Grant, increase infrastructure reliability

Arnalie:

For my first year on the OSMF Board, I would like to focus on:

  • Building more local chapters
  • Diversifying OSMF membership, including membership of OSMF Working Groups
  • Ensuring financial sustainability and effective fundraising (an aspect I need to learn more/develop personally)

Roland:

For me, fundraising is the most important thing to do right now. We need money for both long-awaited improvements and daily operations, and our traditional sources of income from individual and corporate members do not even cover our daily operations. At the same time, the Overture announcement has made clear that some data consumers are willing to spend money on reliable map data. So one building block is to adjust the corporate membership levels.

Another aspect is to raise money for improvement projects and, even, completely new projects. History has shown that it is more feasible to secure income for concrete ideas than for an abstract fund. As the board works on behalf of the community, I will bring project ideas into discussion and listen for existing project ideas from the community that are concrete enough for cost estimations so that we have a list of project ideas ready to excite potential donors. I do not expect that every project will be funded, but I do want to see every potential funding opportunity finding an impactful project that it can be invested in.

Craig:

Now, a month in, I’m getting some traction on my election promises.

I want to help OSMF build up the mapping community and support and encourage existing community leaders. My special effort will be in Africa.

I’m keen to prioritise the OSMF diversity and inclusion programme. I have some ideas, but this must be done as a collective effort.

For tech, I’d like to support OSMF documenting its computer operations, updating and improving the software, look at data structures, promoting vector map tiles and keeping the hardware up to date and reliable.

I’m also making an effort to support the administration in a professional way, with a focus on strategic planning, budgeting, fundraising, and communications.

Mateusz:

For starters, it is necessary to keep basic things running – this applies to the OSM community, servers and critical software. Hopefully only routine activities will be needed here.

I am working on a human-readable budget summary – needed for OSMF board work, better transparency and for people interested in what the OSMF is actually doing – especially those who might potentially donate.

GDPR handling is stuck in limbo – and it is the responsibility of the OSMF board to organise the handling of this annoying task.

Lastly, I want to take action on enforcing attribution requirements.

Get to know the new OSMF Board

In December 2022, four new members were elected to the OpenStreetMap Foundation Board, complimenting the three members already serving. The new members are Arnalie Vicario, Craig Allan, Mateusz Konieczny and Sarah Hoffmann and they join Guillaume Rischard, Mikel Maron and Roland Olbricht.

With regard to the OSMF’s diversity ambitions, this collective of Board members is exciting for two reasons… Firstly, because this is only the second time the OSMF Board has had multiple female members and, secondly, because this is the most geographically diverse board we have seen with representation from across four continents.

So, let’s meet the 2023 Board…

Arnalie Vicario (Philippines)

Arnalie is from the Philippines, and maps under the username arnalielsewhere. She advocates for open data and is passionate about building inclusive spaces in the open mapping and open geo community. She was a GIS Specialist for seven years until she shifted to (online) community engagement in 2020. She works as Online Community Engagement Lead at the Humanitarian Openstreetmap Team (HOT), and as a full time mother.

She has been an OpenStreetMap contributor since 2016, the same year she joined and became part of the OSM community in the Philippines. In 2018, she met her partner at the State of the Map – Milan conference, and reconvened GeoLadies Philippines, an advocacy group for community diversity, collaborative participation, and affirmative spaces especially for women, and under-represented communities in OpenStreetMap. She is a supporter and ally of various communities and networks such as Geochicas, Women+ in Geo, Open Heroines, and more.

You can learn more about her views about community in OpenStreeMap and humanitarian open mapping in the Geomob Podcast Interview – Arnalie Vicario: Building inclusive spaces in OSM as well as through her OSM Diaries.

Craig Allan (South Africa)

Craig comes from a local government background where, as a spatial planner, he received formal training in aerial photo interpretation, photogrammetry and land surveying. He has used commercial GIS systems since the 80’s, starting on the simple but very effective Atlas GIS by Strategic Mapping Inc. and later moving on to the infuriating but effective ARC/INFO by ESRI. Now, he’s a QGIS fan and has used it to support philanthropic work in Rangpur Division, Bangladesh.

Craig concentrates on mapping in Africa under the username, cRaIgalLAn. He appreciates that putting a village on the map may enable residents to be recognised and to receive development support and humanitarian aid. Craig is also very interested in conservation and climate change, so does a lot of mapping of threatened forests in the Democratic Republic of Congo and in several places in Kenya, including the Mara reserve and forests and wetlands inland of Lamu town. He also maps in north Chad because he’s interested in both rock arches and the East Saharan montane xeric woodland which somehow survives on high mountains in the Sahara.

In his later working life, he did less geography and demographics and more management, including strategic planning, risk management, performance management, budgeting and administrative tasks. These skills and experiences have their uses for building and managing organisations and he now deploys them in the interest of the OSM Foundation and the broader OSM community.

Guillaume Rischard (Luxembourg)

Guillaume Rischard is from Luxembourg and maps as Stereo, which is easier to pronounce (he also that username on the wiki). When he discovered OpenStreetMap in 2008, there were only a few main roads displayed around him. He didn’t take the project seriously. In 2011, he ran into it again, and saw that the map had become a lot more detailed. He spotted a missing name, and when he saw it displayed on the map when he refreshed right after saving it, he was hooked. When he uploads a changeset, he still likes to open that place in his browser while it still hasn’t rendered, open the same URL in a new tab a few seconds later, then switch between the tabs.

He works as a freelance data consultant, and was the technical lead and helped drive strategy on the Luxembourg Open Data Portal, where one success was getting the addresses, orthoimagery and official map data of Luxembourg released.

The most significant thing he’s written recently is probably the Membership Working Group report on the 100 suspicious signups. Guillaume and his co-author Steve Friedl were honoured to receive the OpenStreetMap award for influential writing for it at the State of the Map conference in Heidelberg.

He is a member of the Data Working Group and Membership Working Group, and occasionally contributes to the OSM Weekly.

Mateusz Konieczny (Poland)

Mateusz maps and edits the wiki under his own name. He focuses his mapping on local surveying but has also made some bot edits and remote edits. He has also contributed to StreetComplete and other OSM-related tools, such as iD presets and JOSM. He focuses significant time on contributing to the OpenStreetMap Wiki, especially on documenting tagging schemes and reviewing uploaded files to make sure they have the correct copyright information.

Mateusz would like to contribute to greater transparency, attribution and GDPR compliance whilst on the board.

Mikel Maron (USA)

Mikel Maron is a programmer and geographer working for impactful community and humanitarian uses of open source and open data. He started with OSM in 2005. He was elected to the OSMF Board in 2015, and previously served from 2007-2012. He currently works at The Earth Genome, leading digital products. Previously, he led the Community team at Mapbox. He is co-founder of the Humanitarian OpenStreetMap Team, of GroundTruth Initiative, and of the Map Kibera project. He’s travelled widely, organizing mapping projects in India, Palestine, Egypt, Swaziland, and elsewhere.

He maps under mikelmaron and contributes to the wiki under Mikel.

Roland Olbricht (Germany)

Roland Olbricht came to OSM in 2008. Since 2011 he has maintained and operated the Overpass API independent of his day job. Before Covid, he participated in multiple local meet-ups in Germany. He contributes to the OSM wiki under the username, Roland.olbricht.

In his professional life, Roland makes software for public transit as a software developer for the company MENTZ GmbH.

Sarah Hoffmann (Germany)

Sarah Hoffmann has been contributing to OpenStreetMap since 2008 under the username of lonvia (she also contributes to the wiki under the same name).

She started out as a simple mapper, collecting a lot of data while hiking in the Swiss Alps. Over the years she became more and more involved in software development for OSM. She is maintainer for Nominatim, osm2pgsql, waymarkedtrails.org and a couple of other projects. She is part of the OSMF sysadmin team where she is responsible for the Nominatim servers and has helped out in the programme committee of State of the Map over the last couple of years.

In 2020 she finally gave up pretending that OSM is just a hobby. Nowadays she works as a freelancer doing development and consulting for OSM software in general and Nominatim in particular. She lives in Dresden, Germany.


The OpenStreetMap Foundation is a not-for-profit organisation, formed to support the OpenStreetMap Project. It is dedicated to encouraging the growth, development and distribution of free geospatial data for anyone to use and share. The OpenStreetMap Foundation owns and maintains the infrastructure of the OpenStreetMap project, is financially supported by membership fees and donations, and organises the annual, international State of the Map conference. Our volunteer Working Groups and small core staff work to support the OpenStreetMap project. Join the OpenStreetMap Foundation for just £15 a year or for free if you are an active OpenStreetMap contributor.

Reminder: Call for Feedback on the Data Model

Data Model Study

The Engineering Working Group of the OpenStreetMap Foundation commissioned a study in the beginning of 2022 on how to improve the existing data model. Jochen Topf has delivered the results of this study, including recommendations on how to make the OpenStreetMap data model more computationally efficient and more accessible.

Two key suggestions have been made:

  • introducing an area datatype for representing polygons
  • getting rid of untagged nodes

Community Consultation

In order to decide the next steps in this process we want to have more discussions with the community of developers as the proposed changes impact OpenStreetMap software which directly or indirectly depends on the data model.

Potential benefits

Less Mess for Areas

Some mappers may be surprised to hear that OSM does not already have an Area data type. After all, the iD editor prominently features buttons for drawing points, lines and areas. Once mapped, these areas usually appear on the map as expected. The OSM wiki documents whether a tag is typically used on areas, and even Overpass Turbo lets you use areas in your query.

Behind the scenes, however, these areas are represented as ways or relations. Each tool working with OSM data uses its own set of rules to guess whether a particular way represents a line or an area. Making areas a proper part of the OSM data model would lead to a consistent interpretation across applications, enable the API to prevent broken areas from being uploaded, and may eventually lead to support for partial downloads of very large areas.

Keeping OSM Processing Accessible

Currently, ways are made up of references to nodes, and we rely on these references to determine how ways connect to each other. Resolving the coordinates to these node references is a costly process within the OpenStreetMap toolchain as it takes hours to days, even on capable hardware.

In the future, we might model ways as a simple list of coordinates – depending on the exact implementation we end up with. This would offer large performance benefits, but getting rid of untagged nodes would be a significant change.

At first glance, performance improvements may not seem particularly exciting. But how easy it is to work with our data directly impacts how useful OpenStreetMap is to the world at large. As Jochen observes: “The goal is to keep OSM as that great resource that can be used not only by multi-billion-dollar companies but by the student who wants to create a map of the world on their notebook or the activist with their donated second-hand computer.”

Better OSM History

Many mappers are disappointed when they realise how few things the history tab of the website can actually show. There are many tools, like OSMCha and Achavi, that offer much more, but still require a certain degree of proficiency to use them.

You might ask why, and the answer is very technical – the location of a single version of a way is, in many cases, not defined. It is the reason that change tracking remained an expert discipline with relatively newbie-unfriendly tools. By changing the data model we will move away from that barrier, and subsequently we can expect substantially better tools, but not before we get proper coordinates and versions for ways.

Minutely Vector Tiles Generation

While there are quite a number of matured vector tile generators nowadays, a couple of problems are still open.

  • One is which features shall go into the vector tiles for openstreetmap.org
  • The other is how to reconcile minutely updates with vector tiles for performance at an acceptable level.

That task gets an order of magnitude easier if you can not only truly parallelise the generation of tiles, but also elide the first expensive step to figure out to which tile a changed way belongs.

We might be able to find someone who encapsulates the raw computing power necessary to do this. But even if so, this is a highly nondesirable degree of dependence on that partner.

So yes, vector tiles for openstreetmap.org are in principle possible without this data model change, but at a so much higher cost that only specialized hardware will be able to keep up with minutely changes.

Have Your Say about the Future

Some kind of change is inevitable. The growth of the OSM database is outpacing speed improvements in hardware, and the ID-based model means that the whole process cannot be parallelized with full speedup. Keeping up with changes was easily possible in the past, but needs needs more and more tricks now. There is a point in the future where also specialized hardware will suffice to keep up with minutely changes.

However, there are many possible approaches to meeting this challenge. Now is the opportunity for the developer community to share your opinion about the way forward.


The OpenStreetMap Foundation is a not-for-profit organisation, formed to support the OpenStreetMap Project. It is dedicated to encouraging the growth, development and distribution of free geospatial data for anyone to use and share. The OpenStreetMap Foundation owns and maintains the infrastructure of the OpenStreetMap project, is financially supported by membership fees and donations, and organises the annual, international State of the Map conference. Our volunteer Working Groups and small core staff work to support the OpenStreetMap project. Join the OpenStreetMap Foundation for just £15 a year or for free if you are an active OpenStreetMap contributor.

Introducing the Communities Tab on OSM.org

There’s a new way to find and connect with OSM communities.

In the upper right corner of OSM.org, you can now see a “Communities” tab that links to a single, centralized location that lists formal Local Chapters, as well as the other OSM communities. Given how many communities there are and how fast OSM is growing, it’s a good time to add a prominent way to connect.

According to LCCWG member Joost Schouppe, the new tab “is probably the most visible change on osm.org since the addition of Notes.”

Once you have navigated to the new “Communities” page, you’ll see that the data for the Local Chapters listings is dynamically delivered via the OSM Community Index (OCI). In fact, the most difficult aspect of the project was figuring out how to integrate the OCI data into the page rather than just adding a simple list of Local Chapters as static content. As website maintainer Andy Allan noted, “The latter would have been quick and easy, but using the OCI means it is automatically updated when new Chapters are added, and it also means we are reusing all the translations for the Chapter names from the 46 different languages that we already support.”  

While there is not currently a way to dynamically capture all of the other, less formalized communities, the addition of the “Other Groups” section highlights their existence and points the way to more information.  

“It’s just a start” says LCCWG member Adam Hoyle, who also worked on the project.  “Ideally this can grow into an even better centralized page for people and communities to find each other.“ 

Showing a list of Local Chapters is only scratching the surface of what can be done, now that the various underlying technical challenges have been solved. For example, when new mappers set their home location on their profile, they could be shown a list of local forums, mapping groups, and communication channels customised to their location could immediately be shown on their personal dashboard. 

The key to shipping additional improvements to the “Communities” page is having volunteers to help out. ”All this community information is in OCI already, so we now need people to help expand our integration,“ says Allan. Schouppe adds that “this particular issue has been on the LCCWG agenda since October 2020, and Adam started working on it in January 2021. It goes to show that, because we are all volunteers, it takes a lot of time and effort to evolve the osm.org website, but it can be done.”

→ To contribute to the development of OSM.org, please visit the main Github and/or this issue, which highlights the many existing pull requests and gives ideas for how to contribute.

→ To help the LCCWG with their efforts to help local communities grow, please join one of their channels.

 I’d like to thank Adam Hoyle for his work and patience while we worked  through getting the technical foundations in place, which took a while but sets us up for the future; and also to the team behind OCI who made some changes to their side of things to help us get the translations  fully working more easily.-Andy Allan


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