[Talk-us] Gravel roads and surface tags in the US

[Richard Fairhurst]

Jack Burke wrote:
> Keep in mind that OSM apparently uses "compacted" to refer to 
> macadamized roads, which is a specific process for building roads. 

surface=compacted in OSM, following British English usage, is traditionally
as described on pages 18-20 of this document:

https://www.sustrans.org.uk/sites/default/files/images/files/migrated-pdfs/Technical%20Note%208%20-%20Path%20surfaces(1).pdf

"Self-binding gravel paths are versions of the standard limestone dust
surface... The material is spread and levelled using a paving machine whilst
damp/moist and then compacted using a roller or vibrating plate. The
material 'sets' when dry, but not to the same extent as would a concrete or
bitmac. The surface remains loose-ish and dusty"

>From Toby's original posting, I'd describe the first image as
surface=gravel, since it doesn't appear to have been compacted with a
roller. The second is probably =fine_gravel, perhaps =compacted. I'd ignore
the wiki because the wiki, to borrow a phrase, sucks rocks.

Richard



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