[Routing] Journey time prediction/traffic flow

[camaj]

--- Stefan de Konink <skinkie at xs4all.nl> wrote:

> camaj schreef:
> > --- Stefan de Konink <skinkie at xs4all.nl> wrote:
> > 
> >> Isn't this just the implementation of a dynamic
> cost
> >> function?
> > 
> > Maybe, I haven't the foggiest idea what a "dynamic
> > cost function" is!
> 
> 
> 
>
http://www.google.nl/search?q=dijkstra+dynamic+cost+function&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
> 
> 
Ok, well I haven't got the time to read all of that
but from what I can gather (it's geared to a
mathematically literate audience) it's essentially
what I'm talking about. However the software, as I
understand it, already exists, it's just not part of
OSM. 

Any use of an algorithm like this is going to be the
same whether your measuring time or distance

I notice Google maps has a very similar tool, but only
in the US (which is why I didn't mention it) and only
as an overlay (doesn't use during routing). In fact
I'd already seen a similar thing for the UK on, I
think, the highways agency website. Both limited
themselves to motorways though.

There's also a traffic system on Microsoft live maps
but either they've removed it or it's only accessible
to US visitors.

This NY Times article discusses their methods and
they're similar to what I proposed
http://www.nytimes.com/2008/04/10/technology/10maps.html?_r=1&oref=slogin


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