[Tagging] railway=platform nodes at tram stops

Selfish Seahorse selfishseahorse at gmail.com
Tue Feb 20 20:59:42 UTC 2018


> Since the Wiki defines the 'platform' as 'the place where passengers
> wait for the vehicle', it doesn't have to be anything in particular. A
> patch of sidewalk could indeed be a light rail 'platform'.

This is only true for `public_transport=platform` [^1] but not for
`railway=platform`: the latter tag is defined as 'a railway platform',
that is, a *real* platform.

If we tag every tram stop with `railway=platform`, how can we know
whether there is a platform? Do we need yet another tag, e.g.
`public_transport=platform` + `tram=yes` + `railway=platform` +
`platform=no`?

[^1]: <https://wiki.openstreetmap.org/wiki/Tag:public_transport%3Dplatform>
[^2]: <https://wiki.openstreetmap.org/wiki/Tag:railway%3Dplatform>


On 20 February 2018 at 21:30, Kevin Kenny <kevin.b.kenny+osm at gmail.com> wrote:
> On Tue, Feb 20, 2018 at 3:17 PM, Selfish Seahorse
> <selfishseahorse at gmail.com> wrote:
>> iD's new 'Tram Stop / Platform' preset adds a `railway=platform` tag
>> even on nodes. I thought this were a bug [^1], but the wiki [^2] says:
>>
>>> platforms: `public_transport=platform` + `railway=platform` If the platform is just a pole with a sign and the tram stops on the road without a physical platform, use a single node to map the "platform".
>>
>> It seems wrong to me to tag a tram stop (not the stop position) with
>> `railway=platform` if there is no platform, but only a sidewalk or not
>> even that. (It's strange enough already that
>> `public_transport=platform` doesn't mean 'platform' when used on a
>> node.) Besides, the wiki is contradictory, because according to the
>> wiki page about `railway=platform` [^3], this tag should not be used
>> on nodes.
>>
>> If no one objects, I'd like to change the wiki page [^1] so that
>> `railway=platform` should not be used on nodes.
>
> Since the Wiki defines the 'platform' as 'the place where passengers
> wait for the vehicle', it doesn't have to be anything in particular. A
> patch of sidewalk could indeed be a light rail 'platform'.
>
> Also, it's pretty common to permit nodes as surrogates for area
> features when the area is not known, not surveyed, not determinate,
> ... It's been a common practice in some quarters to drop in a node
> that means, "I know there is a building/park/whatever here" and then
> replace it with the area feature when the footprint is known. In some
> cases, the boundary of the area is indefinite - how close to the post
> you stand at a bus stop is up to you and your ability to catch the
> driver's eye.
>
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