[talk-au] Roundabouts and routing

[Ross Scanlon]

> Well, I would rather represent geometrical reality than play tricks for routers.
> 
> Take a comparative example:
> 
> http://www.nearmap.com/?ll=-28.0917,153.3945&z=19&t=k
> http://www.openstreetmap.org/?lat=-28.0917&lon=153.3945&zoom=18&layers=B000FTT
> 
> You can see that to get from S to W, W to N and N to E it's a graceful sweep
> left, more or less tangential to the roundabout.  Whereas from W to S, there's
> the left bend into the roundabout, a bit of right bend in the roundabout,
> before turning left again out of the roundabout.
> 

Wrong, on everyone of these you have to enter the roundabout and then take the next exit, it is not a graceful sweep.

We are creating a map, not a geometrical reality picture.  The ways we enter need to be topographically correct and in this case they are not.

Your also looking at it as if the roundabout joins the roads, where as the roads join the roundabout.

-- 
Cheers
Ross