[Routing] Leave motorway, turn onto track

[Robert (Jamie) Munro]

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Frederik Ramm wrote:
> Hi,
> 
>     it is not uncommon in Germany for a track (highway=track) to be  
> connected to a motorway in such a fashon that you could theoretically  
> turn onto the track from the motorway if you were travelling at 10  
> mph or so.
> 
> It isn't allowed of course, and that should perhaps be modelled  
> through appropriate turn restrictions.
> 
> I wonder if it would nevertheless make sense for routing engines to  
> implicitly disallow leaving a motorway on anything else than a  
> motorway_link (or at least not on something as small as a track).

Certainly in the UK, where motorways end, they may join directly to
another road without a motorway_link, so you need to be a bit careful
with this.

http://www.openstreetmap.org/?lat=51.56051&lon=-0.48726&zoom=16&layers=B000FTF
http://www.openstreetmap.org/?lat=51.4279&lon=0.24058&zoom=16&layers=B000FTF
http://www.openstreetmap.org/?lat=54.4654&lon=-1.66696&zoom=16&layers=B000FTF

etc.

Robert (Jamie) Munro

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