Alex Mauer wrote: > versus implying it to be oneway=no, there's *probably* a reduction in > the amount of tagging needed, because there are probably more ways with > motorway_link that are oneway=yes than oneway=no. In addition, for a > routing application it increases safety. It's a lot worse to route > someone the wrong way up a one-way motorway_link because it was assumed > to be two-way than it is to send someone on a longer/slower route > because it was assumed to be one-way.
I think that is the best argument FOR a specific default in this case? Even where there are two way sections linking to a motorway I think it would be highly unlikely that there will not be at least a short section of one way working for the actual slip section on and off ( OK SOMEWHERE will break that rule but I would not like to live near that accident spot :( ) so the two way bit will probably be an extra segment - tagged motorway_link! Of cause directions of these segments is as important as the oneway data, but only a routing program may spot an error? -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/lsces/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk// Firebird - http://www.firebirdsql.org/index.php _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk