In that particular example I don't think it's needed, since it's only an entrance to the motorway (not an exit) and South Street probably doesn't need these junction tags.
The tag is useful when exits are named or numbered to say there is a motorway exit at this point which such and such name and ref, it's different to destination sign. eg. if you had an exit which was number 2 but exited to a road with ref 1, then he destination_sign relation would be ref=1 but the highway=motorway_junction would have ref=2. I've never seen numbered exits but they exist in other countries, and maybe here too. On Mon, 24 Feb 2020 at 14:32, Ian Steer <ianst...@iinet.net.au> wrote: > sorry, yes – it’s lacram_telenav. > > > > The changeset that caught my eye is 67193952 > > > > I just don’t understand what they’re trying to achieve. There are > gazillions of such intersections to be done if they head down this path. > > > > I see that it is a member of a relation called destination_sign (3286190), > which has lots of information about the signage on this exit. Do they need > to have the motorway_junction tag to record these details about the signage > ?? - and why wouldn’t they be using destination= ? > > > > Ian > > > > > > *From:* Andrew Harvey <andrew.harv...@gmail.com> > *Sent:* Monday, 24 February 2020 11:14 AM > *To:* Ian Steer <ianst...@iinet.net.au> > *Cc:* OSM Australian Talk List <talk-au@openstreetmap.org> > *Subject:* Re: [talk-au] highway=motorway_junction > > > > I don't really see the point of motorway_junction unless that exit has a > name or number (ref), however it's still valid per the wiki as on nodes at > which you can exit the highway, I think to avoid putting it on absolutely > every intersection we should reserve it's use for highway=motorway or > trunk/primary which have grade separated exits. > > > > So based on what you've said, it does sound okay, but if you could link to > a few changesets that would help? > > > > Is that username lacram_telenav instead of lacrom_telenav? Per > https://wiki.openstreetmap.org/wiki/Telenav it looks like they are no > longer working for Telenav, so if there is an issue or question we'll need > to contact Telenav at eu-map-analy...@telenav.com for any questions. > > > > On Mon, 24 Feb 2020 at 13:11, Ian Steer <ianst...@iinet.net.au> wrote: > > lacrom_telenav has been adding highway=motorway_junction tags on exits > from major roads around Perth – I think to designate destination signs. It > is associated with “noref=yes” > > > > The wiki says: > > > > Use the highway <https://wiki.openstreetmap.org/wiki/Key:highway> > =motorway_junction tag to identify a point along a highway > <https://wiki.openstreetmap.org/wiki/Key:highway>=* with junction refs or > names where it is possible to exit the highway onto another road. This is > usually found along a highway > <https://wiki.openstreetmap.org/wiki/Key:highway>=motorway > <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dmotorway>, but is also > applicable to other roads with numbered or named junctions including some > highway <https://wiki.openstreetmap.org/wiki/Key:highway>=trunk > <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dtrunk> and highway > <https://wiki.openstreetmap.org/wiki/Key:highway>=primary > <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dprimary> roads. > > > > The instances I have noticed are not on roads with named or numbered > exits, therefore I am thinking this tag is inappropriate. (I noticed it > because it shows-up as an “e” on my GPS – which is a rendering issue I know) > > > > The wiki also says: > > > > name <https://wiki.openstreetmap.org/wiki/Key:name>=* for the name of the > junction or interchange. *Do not confuse the name of a junction with > the destination(s) the junction leads to.* In most cases worldwide, sign > information describes destinations, not the name of the junction or > interchange itself. If a signpost or indication displays destinations > exclusively, this data belongs to destination > <https://wiki.openstreetmap.org/wiki/Key:destination>=* tags, *not* the > name <https://wiki.openstreetmap.org/wiki/Key:name>=* of the highway > <https://wiki.openstreetmap.org/wiki/Key:highway>=motorway_junction node. > > > > I tried messaging this user a week-or-so ago and have had no response. > > > > What do people think about this tag? I don’t know what he is trying to > achieve. > > > > Ian > > _______________________________________________ > Talk-au mailing list > Talk-au@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-au > >
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