Improving the Wiki documentation of barrier=kerb and kerb=*

[osmuser63783]

@westnordost

To be honest, me neither. As far as I remember, it was the result of a compromise because some people objected to the use of crossing=no for these cases because they understand that it means it is forbidden to cross.

Would you consider setting sidewalk:both:kerb=raised instead of kerb=raised?

The practical problem with kerb=raised is that people add barrier=kerb to it and it breaks routing for cars in routers (such as OSRM) that avoid barrier=kerb. See also iD recommends adding barrier=kerb to kerb=* where there isn't a barrier · Issue #9533 · openstreetmap/iD · GitHub

If we want to discuss this further we can use the other thread instead, as that was specifically about this problem:

Tagging kerbs on crossings

When trying to understand how to tag a kerb, I went looking for mapped kerbs and found this example of a node tagged as barrier=kerb, kerb=raised where a highway=footway and a road cross over. There aren’t any other tags on this node. Looking at the Wiki, I think a better tagging for this node would be highway=crossing, crossing=unmarked, kerb=raised. (The only physical indication that pedestrians are meant to cross there is a gap in the fence along the kerb.) The presence of barrier=kerb seem…