John Smith wrote: >> No, Roy wants to tag the semantics of the stop-sign. If this really >> simplifies the task of the data consumers, it's all the better. > > It seems the problem Roy is trying to solve is to seperate lanes out, > of a dual direction way by use of a relation and pitting it against a > near by junction, where this isn't the problem the needs to be solved, > each lane may have individual restrictions of one sort or another, now > instead of having 1 hacked up solution we now have 2, to describe how > a stop sign effects one lane out of a pair. > > The problem that needs to be solved is tagging individual lanes on a > way, regardless if the issue is a stop sign, different lanes have > different speed limits, different lanes having turn restrictions or > what ever the case may be, the problem is needing to tag individual > lanes.
This does bring up a few more combinations that are not currently covered. I've had a couple of runs over to Milton Keynes in the last couple of days, and GETTING into the correct lane even to go straight on can be a problem, with the outside lane of a pair forcing a right turn. Slip lanes, splitting from 3 to 4 lanes with left and right filter lanes and road markings that give different priority depending on which direction you enter the junction from are all a lot more complex than the simple stop sign problem :) Traffic navigation that can warn you that you need a particular lane would have prevented a couple of potentially nasty incidents! But then there will still be people who can't wait anyway and will just plough into the rest of us :( Now is probably the time that we need to lay out a set of guidelines for micro-mapping the complexities of the road system ( and I have already ranted about the pedestrian aspects of that ) from a simple country crossroads where there is a single main road, and a minor cross road with stop signs ( and no separate pedestrian areas ) through to the 6 or more road roundabouts with complex slip/giveway and traffic lights along with identified pedestrian routes through the junction. Relations may be useful in some instances, but I don't think that they replace the need to BE ABLE to more accurately map the situation on the ground? And we may be approaching the situation where lanes=2 -> lanes=3 is simply not an answer and every lane will need to be mapped? ( And I still think that complimenting highway=trunk with footway=? in this micromapping level makes more sense than additional highway=path for the pedestrian element of this ) -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/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
