[Tagging] Layer and highway=steps

Bjoern Hassler bjohas+mw at gmail.com
Sat Jul 2 11:47:31 UTC 2016


Hi Volker,

My question does relate to overlapping steps, see
http://overpass-turbo.eu/s/h5F for context (King's Cross underground,
London). Yes, layer rather than level.

I'm thinking about accessibility, as well as ease of mapping. Suppose you
are at a certain location, how do you determine what
steps/escalators/elevators connect to that location (from other floors)? In
other words, what are your access options to that layer.

Similarly for mapping: because of the extensive network, it's hard to see
what's what. With layer on steps you could examine the data layer by layer.
If only footways have layers, what overpass query would you use to include
steps?

Thanks for note on up/down. The wiki documentation does suggest this: "By
convention, the *direction of the way* should preferably point uphill, but
the key incline <http://wiki.openstreetmap.org/wiki/Key:incline>=* should
always be added to the way (see the talk
<http://wiki.openstreetmap.org/wiki/Talk:Tag:highway%3Dsteps>page
<http://wiki.openstreetmap.org/wiki/Talk:Tag:highway%3Dsteps>for more
details)." So no default direction as you say, but convention and
recommended incline tag.

Bjoern
On 2 Jul 2016 12:04, "Volker Schmidt" <voschix at gmail.com> wrote:

> "layer" is not relevant here. The "layer" tag is only used to indicate the
> relative vertical position of the object with respect to other objects. So
> steps would only have a layer tag if they are crossing another way, but not
> connecting to it.
>
> To indicate the up or down direction of steps, you can use the tag
> incline=up|down. There is no default direction of steps, as far a I know.
>
> Your question may refer to the "level" tag. In that case your steps are
> connecting different floor levels of a building. I would not assign a
> "level" tag value to a stair that connects the first floor (level=1) with
> the second floor (level=2) of a building.
>
> Volker
>
> On 2 July 2016 at 12:28, Bjoern Hassler <bjohas+mw at gmail.com> wrote:
>
>> Hi all,
>>
>> What is the consensus on the  layer tag for steps?
>>
>> In the direction of the way, steps should normally run uphill/upwards,
>> say from layer=-2 to layer=-1.
>>
>> Should the steps be tagged with layer=-2 or layer=-1? Or both (using
>> different tags)?
>>
>> Thanks,
>> Bjoern
>>
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