Could you please link to this discussion? It is not documented anywhere.

Significant stretches of this REM have no curbs, and it does not make sense to make them as a separate way. I am following the standard on the wiki:

> Cycling infrastructure that is an inherent part of a road – particularly "cycle lanes" which are a part of the road – should usually not be tagged as a separate cycleway, but by adding the cycleway=* tag to an existing highway=* instead. 