After a short discussion on the italian talk, I would move the discussion in this list. After some tests with OSRM, I missed the availability of a tag to mark the continuos (or discontinued) line that divide the lanes in several single carriageway.
In my opinion this is an important indication to the routers to avoid illegal turns across a road. A typical useful application case is a road with many side road [2]. Actually the problem is solved with several turn restriction relations, one for each side way. Tagging the main way with "divider=solid_line" the problem would have been solved in a easier way, also reflecting the real status of the road. Indeed a "Divider=solid_line" proposal [3] was already presented . I'm would revamp such proposal. What is your opinion ? Is there any router developer here ? Ciao Fabrizio [1] http://map.project-osrm.org/ [2] https://maps.google.it/maps?q=Via+degli+Acquedotti,+Livorno,+LI&hl=it&ll=43.559379,10.339882&spn=93.817658,239.941406&sll=43.581112,10.339097&sspn=0.095626,0.234318&oq=via+degli+acque&t=v&hnear=Via+degli+Acquedotti&z=3&layer=c&panoid=AJFk0KCBWPVtT0itjdDSVw&cbll=43.559379,10.339882&cbp=13,-511.08058985009006,,0,19.495970893735887 [3] http://wiki.openstreetmap.org/wiki/Proposed_features/Divider
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