[Tagging] cycleway:lane=advisory

[Simon Poole]

Am 19.01.2021 um 11:08 schrieb Mateusz Konieczny via Tagging:
> So we need tagging for
>
> - lane obligatory for cyclists, supposed to be respected by cars
> - lane obligatory for cyclists, not supposed to be respected by cars
> - lane optional for cyclists, not supposed to be respected by cars
> - lane optional for cyclists, supposed to be respected by cars

I'm not sure that all of the above are things.

In any case it is even a bit more complex than that, the corresponding 
lane type here is

mandatory for cyclists, not allowed to used by cars except if doing so 
doesn't hinder or endanger cyclists (aka empty road), with the exception 
that if the road isn't wide enough to allow two car queues without using 
the lanes, the lane can be used (which as one can imagine leads to 
massive conflicts, since it negates one advantage of cycling in the city).

Simon

>
> Jan 19, 2021, 10:57 by rob at hubris.org.uk:
>
>     On 18/01/2021 16:51, Volker Schmidt wrote:
>
>         Hi,
>         it seems that people are adopting the  two-year old tag
>         cycleway:lane=advisory
>         <https://wiki.openstreetmap.org/wiki/Key:cycleway> tag for the new
>         "soft" bike lanes in various countries in Europe.
>         We have them too in Italy. (example 1
>         <https://www.mapillary.com/map/im/uu8fFxtxTsXauu7kZjxxAg>,
>         example 2
>         <https://www.mapillary.com/map/im/7eknhQC31akzOMeO6z9YgD>)
>         My problem is:
>         There is no clear definition in the wiki, but from the wording
>         I assume
>         that their use is not mandatory, hence the tag value "advisory".
>         However the new bike lanes in Italy are not advisory for
>         cyclists, but
>         they are mandatory for cyclists. They are "soft" only for
>         motorised
>         traffic as they can be used also by motorized traffic when the
>         width of
>         the main carriageway is not sufficient.
>         They do have that  problem in common with the "Schutzstreifen" in
>         Germany, which I believe is tagged in the same way.
>         They are  "indirectly" mandatory to cyclists, as cyclists have
>         to use by
>         law the outermost right hand part of the street (that includes
>         the new
>         type of bike lane)
>
>         So the value "advisory" is wrong.
>
>
>     To further muddy the waters, the UK has advisory cycle lanes (with a
>     broken white line) and mandatory cycle lanes (solid white line).
>
>     Mandatory in this context means that it is a requirement that motor
>     vehicles do not drive in the lane, not that it is mandatory for
>     cyclists
>     to use them. There are no lanes where it is compulsory for cyclists to
>     use them.
>
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