lanes:backward and turn:lanes:backward
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Is it correct that Navigator does not consider lanes:backward and turn:lanes:backward?
I am asking because I tagged a street section that way: http://www.openstreetmap.org/way/289588330 - and Navigator does not display a lane assistant. (In this case, the assistant is not really necessary, but my question is a more technical/theoretical one).
This street is actually a "simple" street you can drive on in both directions. Hence lanes:backward must be used.
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From "select way, node_to, tag_value from osm_lane where tag_key = 'turn:lanes:forward' OR tag_key = 'turn:lanes'" in the year(?) old experimental conversion script I would guess that "lanes:backward" conversion is not implemented yet. Note, that a year ago there were not many lanes data in OSM so it was rather "experimental work" (for fun ;-)). Now it could be different (I was actually surprised on how many places in Germany I saw this lane assistant last weekend) and we may use your case as reference example (I will check it at work).
thanks
Martin
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Hi Martin,using overpass turbo http://overpass-turbo.eu/s/5qV (some parts of France, Germany, Italy and Switzerland in this example) you see how often "turn:lanes" an the variations are tagged.Just "turn:lanes:backward" you find here for the same area: http://overpass-turbo.eu/s/5qYFeel free to change the area of the map to get an overview on other areas and you will imagine, that it could be worth to integrate "turn:lanes:backward" .edit: here's the result for "lanes:backward": http://overpass-turbo.eu/s/5qZregardsMichael
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As a little side step: I consider the "destination:lanes" and their variations just as important (here and here: maybe superfluous but to stimulate others :) ). The destination:lanes give you the blue/green/yellow motorway signs in the top-left of your screen (from Google Play) . So your query slightly modified: http://overpass-turbo.eu/s/5r7
For motorways I always add both the turn:lanes and the destination:lanes (and destination:ref:lanes and destination:int_ref:lanes to be entirely complete).
For lower order roads I add the turn:lanes (and variables), but not always the destination:lanes (and variables)
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Hi Martin,
in Germany we actually begin to start a "job for a week" in OSM. The target is, that as many mappers as possible put as much data as possible including turn:lanes=* and the variations of it into OSM-database. There is also announced, that your Navigator free is one of the routers using these data.
I think it would be nice to expand usability in using informations from most of keys "turn:lanes:*" and mainly the *:backward one. turn:lanes: forward and -:backward is mainly in use on non-dual-carriageway-roads and so often inside of towns, where informations about turns is more needed than on motorways for stranger's orientation as I mean.
So I please to set priority in implementing the use of all the offered turn:-data of OSM.
Thanks
Michael -
Hi hurdygurdyman and others,
in December 2014 OSM data are already included lanes:backward. I received bug report that this example in Hungary does not work properly:
https://www.openstreetmap.org/way/212796596
"turn:lanes:backward"="left|none"
I was looking for some other examples (in Luxembourg, small map, but contains most examples) and it seems to me that there is some misunderstanding, for example:
https://www.openstreetmap.org/way/225665043
also "turn:lanes:backward"="left|none"
but it should be rather "none|right|??
Can you confirm that second example is not correctly mapped?
thanks
Martin
Edit:
The second example is correct (based on satellite images), but in OSM is missing road to the industrial area.
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It is correct to set the values in an order from driver's perspective, and from left to right, see OSM Wiki:
"Lanes should be ordered from the leftmost one to the rightmost one." [..., then regarding "backward"] "doing so view the road in the opposite direction of the osm-way for this."
Regarding https://www.openstreetmap.org/way/225665043 with bing layer:
left|none seems to be correct, because the "left" refers to the quite long turning lane pointing to here - not there. The turning lane ends in the way more north: http://www.openstreetmap.org/way/225665044.
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it might be helpfull to inspect this area in Josm with activated map paint style "lane and road attributes"
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Interesting, thanks - for help see http://josm.openstreetmap.de/wiki/Styles
The December 2014 conversion bug is probably only (?) reversed order of displayed lanes for tag (turn:)lanes:backward. The selected line should be correct. This should be fixed to January 2015 data.
thanks
Martin
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Here is one more thing, which have to be considered, when interpreting lane attributes
https://www.openstreetmap.org/user/imagic/diary/28309
https://lists.openstreetmap.org/pipermail/tagging/2014-December/020394.html
A recent discussion at the german forum, about tagging of an motorway exit (with before and after example)
http://forum.openstreetmap.org/viewtopic.php?id=29279
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I just tested with new Germany South map. Its shown on the right side now. Thank you.
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... and I tested it with Germany West - worked :-)
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While testing the new maps, there was an issue, at least on these two segments:
https://www.openstreetmap.org/way/311830629
https://www.openstreetmap.org/way/230389145
The merge_to_left lane is recommended.
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@rab
Meintest du mit recommended wirklich "empfohlen"? Wenn ja, verstehe zumindest ich nicht, was du damit sagen möchtest :-)
Ich tippe, dass du meinst, dass merge_to_* nicht dargestellt wird. Das ist mir nämlich auch aufgefallen.
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Through lanes are striked through - merge_to_left lane is green
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I can confirm that there is sometimes some error on the turn display.
Here is a screenshot of the faulty display:
http://i.imgur.com/LR8cyhV.png?1
It's there: http://www.openstreetmap.org/#map=18/51.32094/9.50240
PS: this input field does not work on my Android tablet...
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This was most likely caused by a missing turn restriction.
http://www.openstreetmap.org/relation/4545164
Lets see, if it will work, with the next Map update
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I still see this buggy display in the one direction.
In the other direction it first displays it wrong, but then 1 second later it is displayed correctly.
See:
http://i.imgur.com/Z6tlNYV.jpg
http://i.imgur.com/STUvtHY.jpg
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