[talk-au] Suspicious amount of removed bicycle tags

Andrew Harvey andrew.harvey4 at gmail.com
Thu Sep 23 02:09:45 UTC 2021

On Wed, 22 Sept 2021 at 23:27, Kim Oldfield via Talk-au <
talk-au at openstreetmap.org> wrote:

> Likewise with highway=cycleway. In Victoria this means that both
> pedestrians and bikes are allowed. Explicitly tagging foot=yes and
> bicycle=yes adds unnecessary noise.

Victoria has some highway=cycleway + foot=no
https://overpass-turbo.eu/s/1bpQ so I think explicitly tagging foot=yes or
foot=no is best if it's signposted as such, it's a clearer assertion that
this has been surveyed and it had dedicated signage indicating foot access,
which is a stronger assertion that just relying on the defaults.

I've seen a proliferation of foot=yes/designated and
> bicycle=yes/designated tags on bike paths. Generally I ignore them
> unless they are wrong. Do they provide any value?

I'm speaking for NSW here, but for most shared paths I'll add
foot=designated + bicycle=designated as a way to say there is signage here
indicating both modes signposted/designated. Especially for some paths here
which look and mostly act like a footpath, having those two access tags
mean it doesn't matter if the highway value is flipped between footway and
cycleway, the shared path tagging still remains.

> What happens if the law is changed and adults are allowed to ride on
> footpaths? These tags all become worse than nothing as there is no way
> to tell from OSM which paths have signs prohibiting cycling, and which
> tags are stating the default from before the law was changed.

One good reason why it might be best to only explicitly tag and not tag
only based on local law.

> We have default access by highway type documented at
> https://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access_restrictions#Australia
> <
> https://wiki.openstreetmap.org/wiki/OSM_tags_for_routing/Access_restrictions#Australia
> >

And formally defined within the data via
`def:highway=footway;access:bicycle=no` on
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