On 2018.04.19. 17:53, Max Erickson wrote: >> I grew up in an area with these kinds of roads and I don't think >> they're technically compacted. The gravel, which is crushed >> limerstone, is laid down and due to its chemical properties creates a >> smooth surface after several months of traffic. > > Having read about this some since Tobey mentioned it on Slack, the > compaction is often meant to come from traffic. > > In the Midwest the material is often from local "gravel pits" which > are glacial material, so a mix of sand and rounded stone. I think they > do some sorting and remixing of the material before using it for road > surface construction, and they definitely add clay as a binder. > > I think the use of clean stone (the wiki gravel) is more common for > ornamental driveways than for any road meant to bear much traffic. > Apparently part of the issue is that there aren't many built roads in > the UK (and Europe in general) that aren't sealed.
While possibly correct for western Europe, more eastwards that is not correct. A lot of compacted roads. By distance, probably more than paved. Pure gravel usually is reserved for smaller segments where very low travel speed is expected - like service roads for new residential development, driveways etc. > Max -- Rihards _______________________________________________ Talk-us mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-us
