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