Hi Marko, I fear restrictions with multiple via ways are too complex, or I did not understand them If I got that right, we cannot simply convert them to normal restrictions, as they are somehow describing a list of ways which is not allowed to be travelled in that order. I cannot even think of a trafic sign for that :-( I am not sure if Garmin has a restriction type that allows multiple via points. We found out that it has a type that has more than 3 points, but I thought that this is used to list multiple "to" nodes. @Steve: Could it be that the 05 60 00 type restrictions have two via points? Gerd From: gpetermann_muenchen@hotmail.com To: mkgmap-dev@lists.mkgmap.org.uk Date: Mon, 17 Mar 2014 11:02:01 +0100 Subject: Re: [mkgmap-dev] Turn restrictions with role=via ways Hi Marko, I'll have a look at it. Gerd
Date: Fri, 14 Mar 2014 00:03:43 +0200 From: marko.makela@iki.fi To: mkgmap-dev@lists.mkgmap.org.uk Subject: [mkgmap-dev] Turn restrictions with role=via ways
Now, with all these routing improvements, I wonder if it would be possible to extend our support for turn restrictions.
Some mapper seems to prefer via ways to via nodes in this crossing:
http://www.openstreetmap.org/way/30692839
This 2-node way is a role=via member of a no_u_turn restriction that has 4 ways as members: from,via,via,to. It is also a role=via member of a no_left_turn restriction.
The no_u_turn restriction could have been mapped with three ways as from,via,to and the no_left_turn could have been mapped with having this way as role=from, and a node as role=via. Even if I changed the map like that, mkgmap would still ignore the no_u_turn, because the role=via member would be a way.
So, I wonder if we could start supporting this style of mapping? There are lots of dual carriageways in city areas where such turn restrictions are common, at least for no_u_turn.
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