On Wed, Aug 04, 2010 at 04:55:42PM +0200, Carlos Dávila wrote: >El 04/08/10 14:04, Marko Mäkelä escribió: >> On Wed, Aug 04, 2010 at 09:07:27PM +1100, Hendrik Oesterlin wrote: >> >>> "Carlos Dávila" [email protected] wrote on 04/08/2010 at 20:14:50 >>> +1100 >>> subject "[mkgmap-dev] Turn restriction for highway=motorway[_link]" : >>> >>> >>>> El 04/08/10 10:14, Hendrik Oesterlin escribió: >>>> >>>>> Hello, >>>>> >>>>> I have some trouble to make turn restrictions work properly. I think >>>>> it is because mkgmap is failing to make them work if the highway types >>>>> are "motorway" or "motorway_link". The roads are behaving a bit like >>>>> "oneway=yes" in some directions. A very unpredictable thing. >>>>> >>>>> Is this a known behaviour? I am not jet 100% sure that the issue is >>>>> really triggered by the "highway=motorway". But maybe someone before >>>>> has already spend enough time to do all the trial-and-error testing >>>>> for this...? >>>>> >>>> If you are using the dafault style, these lines in the lines file may be >>>> the key: >>>> highway=motorway {add oneway = yes; add bicycle = no; add foot = no } >>>> [0x01 road_class=4 road_speed=7 resolution 14] >>>> highway=motorway_link {add oneway = yes; add bicycle = no; add foot = no >>>> } [0x09 road_class=3 road_speed=2 resolution 16] >>>> >>> >>>> In my customized style I have removed add oneway = yes from the >>>> motorway_link line. >>>> >>> Thank you for your hint! This is probably the problem. >>> >> Wouldn't it be a problem of the source data? In my part of the world, >> motorway links tend to be entering or exiting the motorway at a very >> small angle, and are inherently oneway. Can you post a link to a twoway >> motorway link? Do you suggest that I should remove the oneway=yes from >> the default style? >> >In most cases motorway links are separate oneway roads, but, at least in >Spain, sometimes both directions share the same road. See way 70904729 >in the area below >http://www.informationfreeway.org/?lat=38.107106989860675&lon=-6.2724820671928425&zoom=15&layers=BF00F0
The default style does "add oneway=yes", not "set oneway=yes". You could fix this by adding "oneway=no" to the two-way section of highway=motorway_link. Actually, I see that you already did that, in the initial version: http://www.openstreetmap.org/browse/way/70904726 Unless you can provide an example where a two-way motorway link that is tagged as oneway=no is misbehaving, I think we should leave the default style as is. (A lazy mapper could forget the oneway=yes, assuming that "everyone knows" that motorway links are oneway, and you could get bogus instructions "leave the motorway at the next entry (not exit)".) Best regards, Marko _______________________________________________ mkgmap-dev mailing list [email protected] http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
