At our next event we will improve OpenStreetMap by adding missing roundabouts via MapRoulette.
Bogdan Gliga will be our guest speaker for the evening – he will talk about how we identified missing roundabouts based on GPS probe data and OSM geometries.
MapRoulette (http://maproulette.org/) is a fun way to fix missing roundabouts in OpenStreetMap. In MapRoutelle one solves map tasks - where one task equals a potential problem in OpenStreetMap - one looks at this challenges and provides a "resolution" (fix it, not a problem, or skips the challenge).
· As the event will be focused mostly on editing, please bring a laptop and charger
· (optional) JOSM installed on your laptop.
If you want to read more about the roundabout detection, here (http://blog.improve-osm.org/en/2017/01/enhancing-osm-maps-using-machine-learning-big-data/) you can find some useful information.