As a part of making OpenStreetMap more navigable and accurate for routing, we started updating missing turn restrictions and exit numbers & destinations in 5 cities in Germany: Berlin, Stuttgart, Wolfsburg, Munich and Frankfurt. We started off with 3 cities and later jumped into other 2 cities, Munich & Frankfurt and managed to update missing turn restrictions and exit numbers & destinations through OSM notes with the help of community support.

Summary of improvements:

The Mapbox data team started updating turn restrictions on August 26. The The turn restrictions signboard conventions in Germany were quite different from what we followed for Canada and United States. We went through the German wiki to understand the tagging system and carried out our initial research and came up with our observations in this diary post, where we received valuable feedback from the community. We came to a conclusion that adding OSM notes for the missing turn restrictions is a good way for the community mappers to verify the data with their local knowledge.

We used OSM Navigation map which uses Mapillary images to detect the missing turn restrictions for this. Around 1900 turn restrictions were reviewed in these 5 cities and 112 OSM notes were added by the team where possible missing data was found.

For the Exit numbers and destinations task, the team followed the wiki to review and added OSM notes for the missing exit numbers and destinations for the community to verify and map. For this process, we used tasking manager and checkautopista2 for identifying the missing exit numbers and destinations.

Progress update of missing turn restrictions:

Progress update of missing exit numbers & destinations:

Notes added for exit numbers and destinations : 2 out of which 1 was resolved now

You can find the list of OpenStreetMap notes added by the team here:

• Turn restrictions
• Exit and destination

Status of existing data and Mapillary coverage:

Germany is one of the best mapped places on OpenStreetMap, the community is very active in giving feedback and helping us solve all the queries that we faced through out the project. Since Berlin, Munich and Frankfurt had a great Mapillary coverage, we managed to review and update more turn restrictions in these cities over the others. We reviewed the exit and destinations in a span of 2 days as everything was very well mapped :boom:.

Community support:

Both the exercises went very well with the community response and participation in improving OpenStreetMap . It was good to see some of the community members like jacaobbraeutigam, anbr, wasat, kaltuna, mueschel, peter mailwald, bergaufsee, jonas-erik, hdy3er, loth, jojo4u, hca, FvGordon, mucx, Fuss-im-Ohr, MichaH taking part in resolving most of the notes. It will be great if the community can come together and resolve the remaining 55 notes, which will help in making OpenStreetMap data more awesome :rocket: . We will continue navigation mapping in Germany, specifically in Stuttgart and Wolfsburg once there is enough Mapillary or OpenStreetView coverage to help us to add data/verify.

We’re going to be at SOTM in Brussels next week. Catch up with @PlaneMad, @jinalfoflia, @ramyaragupathy, @pratikyadav and @geohacker on the latest data team projects at Mapbox!

Grüße,

From Mapbox Data Team