bicycle profile - allow bike pushing when bicycle=no and foot=yes

[MichalPP]

in bike profile, currently if tags disallow bicycle (eg bicycle=no) but allow foot (eg foot=yes), this way/node is blocked from routing.

Proposed behaviour if way is disallowed for bicycle and allowed for foot:

• way: allow for routing, mode=pushing_bike, speed=walking_speed, rate=rate/4 (or another huge penalty)
• maybe differentiate penalty: if it's bicycle=no higher penalty than vehicle=no
• (if its a part of route=bicycle, no huge penalty; consider access tags a tagging error)
• node: allow for routing, (penalty blocked by allow node_function() to add penalty to a segment #3862)

implementationwise, it would be nice to be able to reach into foot profile and see access_tags_hierarchy and access_tag_blacklist.

[emiltin]

The way osm tags are defined, bicycle=no forbids bicycles, even if pushed. If pushing should be allowed, bicycle=dismount should be used instead. Unfortunately, this is tagged incorrected many places.

[matkoniecz]

Note that bicycle=no is a de facto equivalent of bicycle=dismount.

While roads/footways completely banning even pushing bicycles are quite rare compared to ones where just cycling is not allowed, bicycle=no is far more popular. It is used over 942 000 times together with highway=* while bicycle=dismount just 73 000 times. It indicates that majority of mappers is using bicycle=no to indicate places where pushing bicycle is OK.

Even if someone is using bicycle=no with intention to state that pushing/carrying bicycle there is forbidden it is impossible to distinguish bicycle=no mapped with meaning "no cycling" and "no presence of bicycles is allowed". It makes this two tags a de facto equivalent.

Usage of bicycle=no for "you must dismount and push bicycle" also matches how this tag is used in my region (Kraków, Poland with some limited activity elsewhere) and how I always mapped.

Unfortunately, this is tagged incorrected many places.

At this point given tag usage I would say that claimed OSM Wiki definition is wrong.

Disclaimer: I am one of people discussing on OSM mailing list and very active editor on Wiki (for example I am the sole author of https://wiki.openstreetmap.org/wiki/Tag:bicycle%3Ddismount )

[SiarheiFedartsou]

Stale.