[Talk-GB] Standalone signalled pedestrian crossing tagging

[Adam Snape]

Thanks Brian,

That's what I'd observed to be the norm around here too. But, is the more
verbose option to be encouraged because it explicitly notes the presence of
traffic lights for road traffic (crossing=traffic_signals just means
signals for pedestrians), or is it just unnecessary complexity (the
presence of vehicle traffic signals could implied from the presence of
pedestrian ones) ?

Regards,

Adam

On 10 March 2017 at 12:55, Brian Prangle <bprangle at gmail.com> wrote:

> Hi Adam
>
> I think option 1 is the consensus way to map these, certainly so in the
> West Midlands. Option 3 is more verbose but not incorrect. Option 2 omits
> the salient feature which is highway=crossing and so is not recommended
>
> Regards
>
> Brian
>
> On 9 March 2017 at 12:23, Adam Snape <adam.c.snape at gmail.com> wrote:
>
>> Hi
>>
>> I recently noticed this changeset comment: https://www.openstreetmap.org/
>> changeset/46680980
>>
>> It seems that the Wiki suggests three alternative ways of mapping a
>> pedestrian traffic-light controlled crossing:
>> 1. Entire crossing mapped as a node: highway
>> <https://wiki.openstreetmap.org/wiki/Key:highway>=crossing + crossing
>> <https://wiki.openstreetmap.org/wiki/Key:crossing>=traffic_signals
>> <https://wiki.openstreetmap.org/wiki/Tag:crossing%3Dtraffic_signals>
>> 2. Entire crossing mapped as a node (alternative): highway
>> <https://wiki.openstreetmap.org/wiki/Key:highway>=*traffic_signals* +
>> crossing <https://wiki.openstreetmap.org/wiki/Key:crossing>=
>> traffic_signals
>> <https://wiki.openstreetmap.org/wiki/Tag:crossing%3Dtraffic_signals>
>> 3. Crossing mapped separately and tagged highway
>> <https://wiki.openstreetmap.org/wiki/Key:highway>=crossing
>> <https://wiki.openstreetmap.org/wiki/Tag:highway%3Dcrossing> + crossing
>> <https://wiki.openstreetmap.org/wiki/Key:crossing>=traffic_signals
>> <https://wiki.openstreetmap.org/wiki/Tag:crossing%3Dtraffic_signals>
>> Traffic lights tagged: highway
>> <https://wiki.openstreetmap.org/wiki/Key:highway>=*traffic_signals* +
>> crossing <https://wiki.openstreetmap.org/wiki/Key:crossing>=no +
>> traffic_signals:direction
>> <https://wiki.openstreetmap.org/wiki/Key:traffic_signals:direction>=forw
>> ard/backward
>>
>> According to the Wiki (https://wiki.openstreetmap.or
>> g/wiki/Tag:highway%3Dtraffic_signals), the latter is strongly
>> recommended:
>>
>> Historically I've tended to use the specific UK shortcuts eg.
>> highway=crossing crossing=pelican but I'm happy to change if the consensus
>> is that any of the above methods are to be preferred. I've never been happy
>> that crossings aren't rendered with a traffic light symbol but have no wish
>> to tag for the renderer. My worry with Option 3 is that some routing
>> programs might view it as two (or even three) separate sets of traffic
>> lights.
>>
>> Any advice gratefully received,
>>
>> Adam
>>
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>>
>
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