jinalfoflia 的日記|Mapping exit numbers on US motorways

Mapping exit numbers on US motorways

於 2016年四月22日由 jinalfoflia 以English發表。

The data team at Mapbox has been trying out mapping missing motorway exit numbers in the US. Based on the density of Mapillary street photographs, the following 9 US states were chosen to improve:

California
Florida
New Jersey
Maryland + DC
Pennsylvania
Washington State
Colorado
Texas
Illinois

We used the checkautopista2 tool which made it very easy to detect exits that lack a ref tag. In summary we found most of these exits to have no official exit number and added the noref=yes tag when we could confirm it on official documents or on Mapillary photographs.

exit These are the exit numbers added by the team. The pink dots represent ref=* tags and the blue dots represnt noref=yes tags added by the team, click here to view the full map

The team has been working on this from 31 March 2016 to 14th April 2016 and reviewed more than 220 highways.

Number of ref=* added by team on nodes highway=motorway_junction are 63
Number of noref=yes added by team on nodes highway=motorway_junction are 219

This is the workflow that was used for this mapping activity. Would be great to hear your feedback on how it can be improved for further such tasks, please drop a comment here or on the project tracker.

Happy Mapping!

討論

由 Glassman 於 2016年04月22日 15時17分發表的評論

Thanks for adding the ref numbers but I’m curious about the noref=yes. Is noref documented in the wiki?

由 jinalfoflia 於 2016年04月25日 08時17分發表的評論

@Glassman there is no wiki for noref=yes but this tag has being used 4 458 times and this is present in tag info - http://taginfo.openstreetmap.org/keys/noref#overview