Changeset: 42030276
Aligning and fixing impossible angles in highway using #to-fix https://github.com/mapbox/mapping/issues/107
Closed by ridixcr
Tags
created_by | JOSM/1.5 (10786 en) |
---|---|
source | Bing |
Discussion
-
Comment from Tomas Straupis
Simple splitting of ways does not solve the problem of impossible angle routing. Turn restriction is missing.
I've added a missing restriction here, you can check it and use the same principle in other places. -
Comment from ridixcr
Hey there
Thanks for contributing by adding turn restrictions. I really don't know this place so I cannot guess where a turn restriction exists. About your suggestion for adding restrictions I would like you to share the wiki or any documentation that support this principle.
Thanks for your feedback.
-
Comment from Tomas Straupis
Point is that it does not matter for routing purposes if OSM way is split or not. For example in this particular situation splitting the way to two segments: one going out of the red road and another going back into the red road has absolutely no impact on routing.
Routing algorithms will split the ways as they need to create their internal routing network (graph).In this particular place the only thing we MAY want to restrict is going out of the red road and directly going back because it would mean we have to do a very sharp turn. In order to avoid that we would need a turn restriction.
Check this keepright.at validation rule:
http://wiki.openstreetmap.org/wiki/Keep_Right/400_geometry_glitches
401. Unfortunately I do not see a detailed description on how to fix that, maybe because it is counted as "obvious".
There is a more detailed description in German version of keepright.at error fixing manual:
http://wiki.openstreetmap.org/wiki/DE:Keep_Right_Users_Guide
Ways (2)
Welcome to OpenStreetMap!
OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Hosting is supported by Fastly, OSMF corporate members, and other partners.
https://openstreetmap.org/copyright | https://openstreetmap.org |
Copyright OpenStreetMap and contributors, under an open license |