Hooo, I see, and I also see there was not a large consensus on that point (Discussion) since all other ways are having a different behavior.
About all motorway_link in Canada are having the same problem! At least everything imported via Canvec and possibly the same with GeoBase. Actually, we might have to add oneway=no for all motorway_link that that do not have the tag. However, it may exist some motorway_link that have been captured using this rule. Any idea about the best way to proceed to correct the problem? Daniel From: Harald Kliems [mailto:[email protected]] Sent: November-25-13 15:06 To: Daniel Begin Cc: Talk-CA OpenStreetMap Subject: Re: [Talk-ca] GPS and Motorway links ... Daniel, if you look at the motorway_link page in the wiki (http://wiki.openstreetmap.org/wiki/Motorway_link) you'll see that by default it implies oneway=yes. That would explain the behavior you described. "Most motorway_link roads will be one way, and should be tagged <http://wiki.openstreetmap.org/wiki/Key:oneway> oneway= <http://wiki.openstreetmap.org/wiki/Tag:oneway%3Dyes> yes. Any unusual motorway link road which is two-way should be explicitly tagged <http://wiki.openstreetmap.org/wiki/Key:oneway> oneway= <http://wiki.openstreetmap.org/wiki/Tag:oneway%3Dno> no. Note that this is different to the way we treat other highway classifications, because motorway link roads are so often one way. Explicit tagging (either way) can be important, since some tools interpret motorway link roads as implicitly oneway=yes unless tagged oneway=no." I wonder if there would be a way to filter all those links that are reversed with the Overpass API? Harald. On Mon, Nov 25, 2013 at 2:40 PM, Daniel Begin <[email protected]> wrote: Bonjour, I've just found out that I have routing troubles with OSM data in a Garmin GPS when motorway_link are not tagged oneway=yes/no. Here is an example where some segments of motorway_link can be driven both ways (2 lanes, one each side) http://www.openstreetmap.org/#map=16/46.0194/-72.3512 Everything works fine when tags are. highway=motorway_link oneway=no, or oneway=yes But it doesn't work if there is no oneway tag. Actually, the way must have been digitized in the direction I want ot go - as if it assumes that no oneway tag means oneway=yes. In the provided example, my GPS will find a way out of the motorway but it will not find a way in! - must be looked at in an editor. It could have been my usual OSM/Garmin provider ( http://www.osmmaps.com/maps/canada ) but when I saw the same behavior in JOSM I wonder if there is a rule I'm not aware of? Should I change my OSM/Garmin provider or tell him there is a problem with his conversion program? Comments or answers? Daniel _______________________________________________ Talk-ca mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-ca -- Please use encrypted communication whenever possible! Key-ID: 0x34cb93972f186565
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