There are several roads near me where it’s legal to walk - but where I know that walking would be extremely dangerous because of no footways, narrow carriageways and fast traffic. Is there a way to flag these that would help OSM-based routing services like Strava and Komoot stop recommending them? I know the local area well enough to ignore Strava when it suggests I run along these roads, but I fear for people who don’t, and assume the route will be okay
Some people use access keys with the value “discouraged” for this according to https://wiki.openstreetmap.org/wiki/Key:access#List_of_possible_values
I agree with that page that it’s better to tag objective reality: sidewalk=no, maxspeed=100, etc., and let routing software figure out to avoid routing pedestrians along something tagged with that.