[OSM-talk] Lightning fast car routing built on OpenStreetMap data, with draggable routes

[John F. Eldredge]

Nick Whitelegg <Nick.Whitelegg at solent.ac.uk> wrote:

> 
> I tried the route we went on holiday as a family in the 80s...
> Fernhurst, W Sussex, to Münstertal in Germany. Impressively fast.
> 
> The route was much as I remember as far as Reims... but then, rather
> than routing you along the A4 autoroute to Strasbourg and then down
> the German autobahn (forget the number) to Freiburg, it routed you
> much further south along French "N" roads. Is the motorway weighting
> high enough?
> 
> Nick
> 
> -----Jean-Marc Liotier <jm at liotier.org> wrote: -----
> To: talk at openstreetmap.org
> From: Jean-Marc Liotier <jm at liotier.org>
> Date: 17/03/2012 02:01PM
> Subject: Re: [OSM-talk] Lightning fast car routing built on
> OpenStreetMap data, with draggable routes
> 
> On 03/17/2012 02:17 PM, Philip Barnes wrote:
> > The Inverness to Athens route does seem a bit bizarre. Not what I
> > would have expected.
> > 
> > Crossing the Pennines on the A66 is strange, continuing on the M6 is
> > the more normal route. Also crossing from the M2 to M20 to get to
> > Dover is strange, for a car the M2-A2 directly to Dover is quicker.
> > Most routing software does seem to prefer the tunnel over the ferry.
> > 
> > http://open.mapquest.co.uk, which also uses OSM mapping provides
> > more normal routing, certainly for the UK stage. Although it does
> > seem to struggle with routing in South Eastern Europe.
> > 
> > Google takes you through Italy and across the ferry to Greece, am
> > not sure of the relative merits of this route, over traveling
> > overland but it does start to ring alarm bells of real border
> > crossings and the need for additional insurance.
> 
> I went to Istanbul from France through the Croatian coast and Greece
> on
> the way in and through Italy on the way out. Apart from the touristic
> merits of either, Italy is certainly a faster way.
> 
> Strangely, OSMR won't give me a route through the Igoumenitsa-Brindisi
> ferry though the Mapnik render does show a ferry line between them...
> I'll have to take a look at the data. Without that ferry crossing, the
> route through Italy is not as short - which might explain the routing
> service's preference for the continental route.
> 

>From what you and others have said, it sounds like the software is seeking for the shortest distance, rather than the shortest travel time.

-- 
John F. Eldredge --  john at jfeldredge.com
"Reserve your right to think, for even to think wrongly is better than not to think at all." -- Hypatia of Alexandria