Darrin Smith wrote: > On Thu, 11 Dec 2008 21:58:25 +1100 > Matt White <[EMAIL PROTECTED]> wrote: > > >> This is probably a can of worms that needs opening - there are a >> number of AU specific things that I think most of us apply a >> "best-fit" approach to, that really need further discussion so we can >> come up with some level of standardisation. Roundabouts are one, >> seasonal closures a second, and personally I think the edit war >> around surface/smoothness/usability has relevance to AU mappers given >> the prevalence of unmade roads once you are outside the suburban >> areas. Add to that things like placarded load restrictions for >> tunnels, roads requiring permits (eg: Arnhem Land), emergency boom >> gates across roads where there aren't train lines and suddenly you >> start to appreciate the limitations of the UK centric system we are >> using (or perhaps it's the richness of the AU road system). >> > > You really make it sound like we have too much fun getting around > here. ;) Haven't seen any emergency boom gates like you suggest, sounds > interesting, what are they for? > > There are emergency boom gates across the EastLink and CityLink tunnel entrances (well, back aout 300m), used to stop traffic entering the tunnels in an emergency, or when there is an accident in the tunnel. I believe they wer put in after the Burnley tunnel fire a couple of years ago. >> My two cents on roundabouts: Given the existing defintion on the >> wiki, it's probably a coin toss as to the better way - personally, I >> think mini_roundabout is fine. For standard suburban roundabouts in >> Melbourne, it about correct, and drawing a diamond shape to make a >> roundabout is just butt ugly. At least with a single node, you can >> choose to do something decent renderer wise ( a nice pretty circle or >> icon or whatever). The core idea, which is the fact that there is a >> roundabout at that point, is represented either way. >> > > And with 4 points and a flag saying junction=roundabout an intelligent > renderer can easily beautify it up also, making an ellipse which best > fits the 4 points (And there's roundabouts around where an ellipse fits > better than a circle anyway). The other core idea that you can't > drive straight across the junction or pull a standard right turn any > more is broken however if you use a mini. > True - in the end, both approaches work for a small circular concrete structure, and for larger ones, you do have to actually draw the ways correctly.
All we need is a more definitive set of instructions on the wiki, and we are away (ideally after at least some constructive discussion). I've no personal preference either way (it they are obvious from my GPS trace, they get the full berries, otherwise, min-roundabout it is. What we need now is a sub-committee to determine the terms of reference for the committee to determine the way roundabouts are mapped (with it's attendant oversight and audit committees). If we are lucky, I might even be able to organise some cake to help the ruminations ;-) (There really is a cetain amount of anarchy in this whole OSM thang that i quite like...) Matt _______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au
