I've tried using it over the years but I never liked it because there was no information. So last night I looked at my local city and there is almost no information at all. I spent a few hours last night adding buildings and restaurants and removing incorrect items. It was actually kind of fun and therapeutic and I plan to do more of it tonight. My girlfriend thinks it's dumb and I'm wasting my time because Google maps and Apple maps and Bing maps exists but she just doesn't understand open source.
Edit: Apologies, I just realized this question is not Linux specific.
Im currently using streetcomplete, which is an app that gamifies the experience of fulfilling OSM gaps. It's like playing pokemon go but you are hunting a street with isle. I found this recommendation here in lemmy so im passing forward, I loved it
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?
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.