[OSM-talk] Divided roads proposal

[Steve Bennett]

On Fri, Dec 4, 2009 at 12:40 AM, Nick Whitelegg <Nick.Whitelegg at solent.ac.uk>
wrote:
> Agreed, while it's sensible for two ways in a dual carriageway, it seems
> OTT to have two ways for a road simply because it's got white lines down
> the middle. It seems to me to be introducing unnecessary complication, not
> to mention increasing required storage size and bandwidth for transmitting
> the data or the need for pre-processing tools to remove it if you're not
> interested in it for your purposes.

Ok, so no one has raised objections so far. What's the next stage to getting
this adopted? Open the RFC? Work on the proposal itself more first?

For example I'm not sure I see the need for the relation - but maybe I'm not
understanding it. As I see it, when there's a junction:

      |
======+======
      |

Either the N-S street can go through, or it can't. That's a simple flag best
set on the node (junction=*). By default I'd say it doesn't go through, it's
two separate side streets each feeding into a street with a median strip.

Incidentally, I've uploaded a pic showing three types of divider:
http://wiki.openstreetmap.org/wiki/Proposed_features/Divided_road

I was just mapping out a new suburb, and really realising how ridiculous it
is to make two lanes every time there's a divided street. I really hope we
can get this implemented. It would also be useful at roundabouts, where the
streets are briefly divided when they meet the roundabout.

Steve
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