this post was submitted on 13 Jul 2023
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I just saw that and downloaded it. My struggle is telling the difference between asphalt and concrete.
Wait until you have to decide between gravel and compacted gravel.
But seriously, asphalt and concrete should be pretty obvious. Alphalt is darker and porous, gravel embedded into an almost gooey (when hot) substance. Concrete is flat, often in slabs next to each other, prone to cracking.
Wiki has descriptions for the surface types, https://wiki.openstreetmap.org/wiki/Key:surface gravel seems to be general term that includes compacted gravel, I had to look up difference between dirt, ground and unpaved without text descriptions from the wiki that would have been impossible.
My local Public works committee has a habit of digging up asphalt roads to do water supply pipe repairs, and then filling them up with the rubble when they're done. What category would such a road some under?
Possibly something like
But I'm really not sure. You might find information at https://wiki.openstreetmap.org/wiki/Key:surface and/or https://wiki.openstreetmap.org/wiki/Key:smoothness
Asphalt can be on top of concrete.
But From my experience concreet normally has a visible splits between segments every few meters and is almost always way lighter in color.
https://infrastructurenews.co.za/wp-content/uploads/sites/4/2015/08/Concrete-roads.jpg
I'm not a specialist but to me, it is all about road quality, asfalt when you can safely drive and it's very smooth ride like you drive in the air, while co concrete you can drive well but there are clearly visible or audible bumps, so for me the actual material (or mix of them) doesn't matter, if they can make classy and safe to drive road with glass or anything else should not matter.
I think I got it figured out. It's pretty obvious when I compare them side by side.