As announced yesterday on Mapbox's blog ( https://www.mapbox.com/blog/osm-qa-tiles/), a full-spectrum vector tileset of OpenStreetMap is now publicly available for download at http://osmlab.github.io/osm-qa-tiles/.
We are generating these tiles with libosmium - Jochen wrote about this just this week ( https://lists.openstreetmap.org/pipermail/dev/2015-September/028671.html) and tippecanoe. At Mapbox we're using this QA tiles to discover disconnected roads, alignment errors, vandalism, etc. This is further facilitated by using these tiles in conjunction with Turf.js (http://turfjs.org/), the javascript-based geospatial analysis toolset, and Tile Reduce ( https://github.com/mapbox/tile-reduce), which can run the analysis across all tiles in a given area. We're opening this work with the spirit of sharing approaches to improve the map - I'd love to get some feedback from members on here regarding this release and its potential to provide meaningful QA for OpenStreetMap. Cheers, Matt Greene
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