[Tagging] s oneway=yes applying only to vehicles? ) Or is it applying to traffic on main part of way?

[Sebastian Gürtler]

I try to answer the observed practice in my home region (Bielefeld, NRW,
Germany) as far as I had a deeper look on it.

Am 19. März 2022 13:37:08 MEZ schrieb Mateusz Konieczny via Tagging
<tagging at openstreetmap.org>:
 >1) oneway=yes is typically used on roads
 >2) when oneway=yes is used on roads it applies to vehicles and does
not apply
 >to pedestrians on sidewalks
 >3) when oneway=yes is used on roads it applies also to cyclists on
carriageway
 >(unless overridden by oneway:bicycle=no)
 >
 >Questions:
 >(1) is oneway=yes on road applying to cyclists travelling on
sidewalks/cycleway=track?

Yes: Usually I'd expect that oneway=yes applies to all vehicles on that
osm way unless explicitly stated oneway:bicycle=no (according to german
traffic laws).

 >(2)
 >Is oneway=yes applying to pedestrians when used on ways where no
vehicle traffic
 >is allowed?
 >For example is oneway=yes highway=footway oneway for pedestrians?
(Don't know exam
 >Is it correct to map oneway hiking trail as
 >highway=path + oneway=yes + foot=yes + bicycle=no + ski=no + snowmobile=no
 >?
 >
 >(3) is oneway=yes used in meaning "applies to all vehicles" So would apply
 >on main road part, on sidewalks, on attached cycleways if mapped as
property of road.


 >And highway=tertiary cycleway:both=track oneway=yes would mean

 >that attached cycleways are oneway in direction of way.

Yes: The above rule would be applied similarly.

highway=tertiary cycleway:both=track oneway=yes would be avoided here.
Mappers here create additional ways for the cycleways.

Usually one would expect traffic signs that clarify the situation which
could be translated in osm tags. Then you had a sign in addition to the
"no entry"-sign "bicycles free" which would be tagged as
bicycle:oneway=no. In case of cycleway:both=track bicycle:oneway=no I
would assume that the situation would be that you still have to ride on
the right side so each track would be still oneway for the bicycles!

According to overpass there are only very few examples for this
combination in Germany at all. Some seem to be tagging mistakes (2x in
splitted ways approaching roundabouts in Hamburg, where there are surely
not bicycles tracks on both sides, probably by creating two ways in the
approach to the roundabout for each direction without deleting the
cycleway:both=track on each way), there only remain 2 examples in
Bamberg, with Mapillary it is very clear (arrows on the tracks) that in
this case in fact each single track is still oneway. These ways are
tagged bicycle:oneway=no (this is important for routing along that way,
it doesn't give information about the status of the single tracks).

 >Or is it better defined as "applies to main part of the way"
 >So would apply to carriageway if used on road
 >And highway=tertiary cycleway:both=track oneway=yes would mean
 >that attached cycleways can be used in both directions.

This wouldn't be a good idea. How should a routing application for
bicycles know what is possible?

 >So would apply to pedestrians if used on highway=footway

 >
 >This concerns
 >https://wiki.openstreetmap.org/wiki/Key:oneway:foot
 >https://wiki.openstreetmap.org/wiki/Key:oneway
 >where there is a quite prolonged disagreement how this should be tagged
 >and how it is being tagged.
 >
 >Note that I am not asking how tagging scheme would be designed in the
idea world
 >and I am not asking is OSM Wiki currently correct - I am asking about
actual use.
 >
 >Based on what I know highway=footway oneway=yes means that such way
 >is oneway for pedestrians and current OSM Wiki description is incorrectly

 >making claims about oneway:foot.

 >And such redefinition would not even be helpful.

That's not the typical usage here in this area.

The most occurrances of highway=footway oneway=yes are where you have an
allowance on a designated footway for other vehicles. And in this case
the oneway=yes is used for the vehicles and not for the pedestrians:

  * foot = designated
  * highway = footway
  * motor_vehicle = destination
  * name = Wandweg
  * oneway = yes
  * oneway:bicycle = no
  * surface = asphalt
  * vehicle = destination

https://www.openstreetmap.org/way/25905279

  * bicycle = yes
  * highway = footway
  * oneway = yes

https://www.openstreetmap.org/way/118583209

On the other hand I assume that in the following example it may be meant
that pedestrians should only pass in one direction.

  * bicycle = no
  * bridge = yes
  * highway = footway
  * horse = no
  * layer = 2
  * motor_vehicle = no
  * name = Baumwipfelpfad Bad Iburg
  * oneway = yes
  * oneway:wheelchair = no
  * surface = wood
  * wheelchair = yes
  * width = 2

(https://www.openstreetmap.org/way/637507864,
https://www.baumwipfelpfad-badiburg.de)

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