In the last two weeks, as a part of improving the quality of base-map data of Singapore on OpenStreetMap, the Mapbox data team along with the community has completed adding missing streets and buildings in Singapore.

For this task, the team used a combination of Mapbox and Bing satellite imagery to improve the road network and building footprints data. We presently have managed to refresh more than ~1200 kilometers of roads. Additionally, we also have added close to ~40,280 buildings.

Take a look at the visualisation below which shows the buildings added during the last two weeks.

Issues with mapping in Singapore:

• The main issue that the team encountered was the lack of good quality satellite imagery for both Bing and Mapbox. While Bing had better quality than Mapbox, it was not recent and had huge patches of cloud cover. So secondary sources like Strava were used for verification of major roads during adding missing roads.
• Also due to the presence of huge number of high rise buildings, there often was distortion and the building footprint had to be very carefully aligned around the base and not the rooftop.

Singapore is a rapidly developing country and satellite imagery is often outdated. It would be great to have the community validate our edits and give any feedback regarding our process in our mapping ticket.

We thank the community for all the support. We look forward to more interactions with the Singapore community.

Thanks,

From Mapbox Data Team.