2012/4/21 Philip Barnes <p...@trigpoint.me.uk>: >> You can Tag lanes:forward= and lanes:backward= > Would this make sense? > Lanes=3 > Lanes:forward=2 > Lanes:backward=2
No, it wouldn't. This was one of the reasons, why I suggested an additional suffix "both-ways" in the original version of the lanes proposal (see [1]). With this suffix you would tag this as follow: lanes=3 lanes:forward=1 lanes:backward=1 lanes:both_ways=1 What you are now missing is the information, what exactly can be done on the both_ways-lane: is it a passing, median or reversible lane? Originally I suggested an additional tag "reversible" for this. But this was ambiguous so when I wrote a proposal for this I changed the tag to "two_way_lane" (see [2]). Then you could either use the lanes suffix or the both_ways suffix to specify the kind of lane. Using the both_ways suffix we would add the following to the aforementioned tags: two_way_lane:both_ways=passing Now it is defined, that the lane in the middle is a passing lane. But there are two reasons, why I think, that two_way_lane is not a good solution: 1) "two_way_lane:both_ways" is awful and two_way_lane makes only sense with both_ways, but not with forward or backward. 2) A more generic tag could be better readable and at the same time provide more information with amore compact style. So I am thinking of renaming two_way_lane to lane_kind. This tag then should specify the kind of lane, e.g. passing, reversible, median but also directional for "normal" lanes, and some more. If we have a road with four lanes and two of them are reversibles, we would tag them as follows: lanes=4 lanes:forward=1 lanes:backward=1 lanes:both_ways=2 lanes_kind:both_ways=reversible We would need the tags with the lanes suffix then only in such cases, where we really need the layout of the lanes, e.g. on junctions. In this context the values of lane_kind for "normal" lanes then would be helpful. But this all is off-topic right now: for the lanes article I will add a statement, that this issue is currently unresolved. Martin [1] http://wiki.openstreetmap.org/wiki/Proposed_features/lanes_General_Extension/ProposalPreVoting#Center.2Fmedian_turn_lanes [2] http://wiki.openstreetmap.org/wiki/Proposed_features/two_way_lane _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging