turn lanes not displayed
-
The turn lanes are not displayed here.
http://www.openstreetmap.org/browse/way/196834079
Probably because the right turn is using a bypass and is not at the same place where the left turn is. Not sure you know already....Bypasses are quite common.
-
3 Comments sorted by
-
This is an example where you have "turn:lanes = left|through;slight_right|slight_right", i.e. 3 directions "left", "through" and "slight_right", but the node 702202811 has only 2 outputs. So matching fails.
This require extra micro routing (not implemented yet) during data conversion, which would connect this info with following junction nodes.
-
I just checked way http://www.openstreetmap.org/browse/way/55932797 and found out that it is not mapped as a secondary_link according that wiki-page http://wiki.openstreetmap.org/wiki/Link_(highway) .
Such situations with "bypasses" will produce matching faults nearly every time, because turn:lanes in other directions begin in front of their start.
Could it be a solution to check wether a "*_link" begins befor the next "real" crossing? So (if this link would be tagged as secondary_link) "slight_right" would route along way http://www.openstreetmap.org/browse/way/55932797 from node http://www.openstreetmap.org/browse/node/702202811 but "left" and "through" would lead at the next possible nodes. In this case it would be node http://www.openstreetmap.org/browse/node/702202814 and node http://www.openstreetmap.org/browse/node/2387780972 for "through" and only node http://www.openstreetmap.org/browse/node/2387780972 for "left".
In general turn:lanes-information should indicate to the next node where suche a turn is possible, but I have no idea to programme that
:( -
*link does not help always, especially in urban areas. tertiary_link sounds strange and residential_link even more. Anyway, there are some characteristics for bypasses. (*_)left and/or through destinations remain the same on the following through-road segment but (slight_)right destinations disappear. Similar are lanes. The following through-road segment should not have a (slight_)right turn but else the same turns like left and through. The following turn on through-road segment and (slight_)right road segment should be within a limited range...maybe 40m.
This would solve a lot of bypasses in urban areas. But it might be worth to think about how it can be marked that turn/way-intersections belong together. Maybe by a junction area
Howdy, Stranger!
It looks like you're new here. If you want to get involved, click one of these buttons!
Categories
- All Discussions3,246
- Feature Requests1,264
- Bugs555
- General376
- Navigator FREE1,029
- Vehicle Tracking5
- Navigator 1017
In this Discussion
- hurdygurdyman October 2013
- mdx October 2013
- SunCobalt October 2013