[Tagging] Turn Lane Tagging?

Sat Jun 11 16:00:32 UTC 2016

I completely agree with Marc. Using none as a value in case no turn
indication is present is valid, using || isn't. See the values of the
turn:lanes key on this page:
http://wiki.openstreetmap.org/wiki/Key:turn:lanes for reference.

Cheers, Johan

2016-06-11 7:44 GMT+02:00 Marc Gemis <marc.gemis at gmail.com>:

> I must admit I have never seen none;slight_right in any of the lane
> tagging.
> None is only used in cases where there are no arrows on the ground for
> that particular lane. Furthermore empty is also not a valid value.
> Empty is only valid in e.g. maxspeed:lanes to indicate that the lane
> has the default value set by maxspeed. Since there is no default
> defined for turn:lanes, one has to specify a value for each lane.
>
> Please take a look at
>
> https://wiki.openstreetmap.org/wiki/User:Dex2000#zeitliche_Auswertungen_Overpass-turbo-abfragen
> It contains several OverPass queries for the validation of turn:lanes
> (the page is in german, but search for turn:lanes)
> Those queries were used by the German community for their week
> assignment on turn:lane mapping.
>
> In order to express that 1 lane becomes 2 lanes, one could use the
> proposal http://wiki.openstreetmap.org/wiki/Proposed_features/transit,
> unfortunately imagic is no longer active on OpenStreetMap.
>
> regards
>
> m ( a heavy lane mapper from Belgium).
>
> On Sat, Jun 11, 2016 at 6:00 AM, Bryan Housel <bryan at 7thposition.com>
> wrote:
> > Thanks James for the explanation, it does make sense now. I hope I wasn’t
> > the only person confused to see that tag..
> >
> > I appreciate all the work that you’ve put into adding lane details OSM.
> My
> > goal is to make lane tagging easy for everyone.
> >
> > That said, I think you might be the only person in the world tagging turn
> > lanes with `none;something`.  I checked taginfo and it seems like for
> value
> > combinations like `left;none` there are around 5 in the world.  Yes, that
> > count is off because Mapbox data team deleted some of yours and they
> > shouldn’t have, and it’s great that they apologized, but still we are
> > talking about something that looks kind of like an error and hasn’t been
> > discussed anywhere that I can find.
> >
> > For what it’s worth, I have also seen a few people suggest tagging like
> > `width:lanes:start = 4|0`  `width:lanes:end = 4|4` (e.g. in meters) to
> > describe the shape of that segment of road that widens into the turn
> lanes.
> > Taginfo also suggests that this is used like 10 times in the whole world,
> > and I also haven’t found it discussed anywhere.
> >
> > Maybe this is a situation where the tagging list can discuss and come to
> > consensus and do the whole wiki proposal voting thing?
> >
> > We still have several months before the turn lane tagging will be
> available
> > in iD, so there is plenty of time to work out these details.  In the
> worst
> > case, we just won’t support it, and instead show a ‘?’ in the interface
> to
> > indicate that there is some unrecognized tag in that lane and we will
> leave
> > it alone.
> >
> > Thanks, Bryan
> >
> >
> >
> >
> > On Jun 10, 2016, at 10:16 PM, James Mast <rickmastfan67 at hotmail.com>
> wrote:
> >
> > I've been using the "turn:lanes:*=none;slight_right" & "slight_left;none"
> > tags to indicate which side a new lane has been added on a highway when
> > going from 1 to 2 lanes (sometimes "slight_left;slight_right" if the
> > original lane is centered between the two new lanes).  How else are
> people
> > to properly identify which side the new lane is being added to?  Take a
> look
> > at this way ( https://www.openstreetmap.org/way/419799887 ) and take a
> look
> > at the Bing imagery and look at the 'turn:lanes:forward' tag, and you'll
> see
> > how this can, and would be valid.  It's allowing the router to know that
> a
> > new lane is being added when combined with the next way
> > (https://www.openstreetmap.org/way/419799886 ) which has the
> > "lanes:forward=2" tag.  It also allows the routers to properly tell
> people
> > to get in the left lane if just ahead, there's a left turn they need to
> > make.
> >
> > ________________________________
> > From: Tod Fitch <tod at fitchdesign.com>
> > Sent: Friday, June 10, 2016 9:45:56 PM
> > To: Tag discussion, strategy and related tools
> > Subject: Re: [Tagging] Turn Lane Tagging?
> >
> > I haven’t seen “none;slight_right” as a value and am not sure how that
> > should look different than “slight_right” by itself. However “none” is a
> > value listed in the wiki [1] and I use it a lot as I find multiple
> vertical
> > bars hard to manually count/edit but I can see and count things like
> > “left|none|none” easier than “left||” when editing in JOSM.
> >
> > [1] https://wiki.openstreetmap.org/wiki/Key:turn#Turning_indications
> >
> > -Tod
> >
> >
> > On Jun 10, 2016, at 6:07 PM, Bryan Housel <bryan at 7thposition.com> wrote:
> >
> > Hey James,
> >
> > (Disclaimer:  I work for Mapbox, but I am not part of the team that is
> doing
> > the lane tagging, and can’t speak for them).
> >
> > I do need to know more about your concern:   Is `none` as part of a
> multiple
> > turn lane option documented anywhere?
> >
> > I’m asking because we are adding turn lane tagging to iD this summer
> [1], so
> > I have been thinking a lot about turn lanes, and I have read through a
> lot
> > of wiki pages and discussion pages, and this is the first I’ve seen
> anybody
> > using a tag like `turn:lanes:backward=none;slight_right`.
> >
> > It’s really important to me that I get this as correct as possible,
> because
> > I can’t have iD overwriting somebody’s valid lane tagging.  I’d like to
> be
> > able to show visually what a tag like `none;slight_right` means on the
> > ground.
> >
> > Thanks, Bryan
> >
> >
> > [1] https://www.mapbox.com/blog/osm-gsoc-id/
> >
> >
> >
> >
> > On Jun 10, 2016, at 7:45 PM, James Mast <rickmastfan67 at hotmail.com>
> wrote:
> >
> > I honestly think Mapbox needs to stop immediately editing ways that they
> > think are invalid.  I've seen several ways that I've work hard on, know
> are
> > valid, and are being damaged by edits.  The 'NONE' tag in turn lanes is
> > COMPLETELY VALID!!!!
> > https://www.openstreetmap.org/user/rickmastfan67/diary/38833
> >
> >
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