[Tagging] Proper Tag for Not-a-Roundabout
yvecai at gmail.com
Tue Nov 8 11:43:00 UTC 2016
In fact, the tag should be "like-a-roundabout", right?
Le 8 novembre 2016 12:07:24 GMT+01:00, Daniel Hofmann <hofmann at mapbox.com> a écrit :
>In the second example "Skalitzer Straße" has right of way.
>Here are the instructions emitted at the moment:
>it's a total of four turn instructions every 10-20 meter since there is
>proper tag for the routing engine to differentiate this from a road
>Instead the routing engine could emit a single instruction here.
>My argument is this: there already is a pseudo tag for these
>it's 1/ no junction=roundabout tag and 2/ a note tag containing
>"roundabout" / "Kreisverkehr"
>Here's an example:
>querying for (junction!=roundabout) and
>The routing engine could do the same parsing note tags.
>This would allow us to classify probably all popular ones at least.
>But it's a hack and that's exactly my point: there should be a proper
>tagging scheme to tag this.
>On Mon, Nov 7, 2016 at 5:09 PM, Dave F <davefoxfac63 at btinternet.com>
>> Hi Daniel
>> Second example: Which junction has priority? From a quick look on
>> Streetview all junctions appear to be light controlled.
>> Could you expand on what 'special instructions' the routing engine is
>> able to issue?
>> On 07/11/2016 14:30, Daniel Hofmann wrote:
>> Over at OSRM we're not only doing Routing on OSM but also Guidance
>> users once a suitable route is found. In order to make the user
>> great and the instructions pleasant to use we differentiate between
>> 1/ Roundabouts
>> Think: "at the roundabout take the nth exit"
>> 2/ Roundabout Intersections
>> These are roundabouts with up to four ways and turn angles which
>> turns obvious.
>> Think: "at the roundabout turn left"
>> 3/ Rotaries
>> These are large and named roundabouts.
>> Think: "at Meinplatz take the nth exit"
>> 4/ Not-a-Roundabout (what this post is about)
>> There are situations where one of the entering road has right of way,
>> which disqualifies the scenario for being classified as a roundabout.
>> Wiki has a section on these Not-a-Roundabouts:
>> > In all these cases, the key “junction” is not necessary at all. You
>> no special tagging.
>> Most of these Not-a-Roundabouts have a note on them, telling users
>> tag them as junction=roundabout as this is a common mistake. Here are
>> examples in Berlin:
>> Kottbusser Tor
>> As you can tell, for both of those situations the routing engine is
>> able to issue special instructions since there is no tag to parse.
>> parsing note tags for the occurrence of roundabout is not a solution
>> With the current situations of having note="don't tag as roundabout"
>> pseudo-tags on most of those it would make sense to establish a
>> junction=not_a_roundabout tag (tag is up for discussion) software can
>> and make use of.
>> What's your opinion on Not-a-Roundabout?
>> Daniel J H
>> Tagging mailing
>listTagging at openstreetmap.orghttps://lists.openstreetmap.org/listinfo/tagging
>> Tagging mailing list
>> Tagging at openstreetmap.org
>Tagging mailing list
>Tagging at openstreetmap.org
Envoyé de mon appareil Android avec K-9 Mail. Veuillez excuser ma brièveté.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Tagging