[mkgmap-dev] [PATCH] turn restrictions - alpha code for testing

Tue Feb 24 12:52:14 GMT 2009

> Well, "correctness" is in the eye of the beholder. People have
> different agendas and expect different things from the map. In this
> situation there is a conflict between the visual look of the map and
> the need to express some constraint about how traffic may be routed.

I agree.  If the map was purely intended to support Garmins, with
whatever limitations are in their routing functions, then I think it
would be a change worth making.  But another group (Tomtom, etc) might
have a router that supports ways as the via, so they would be able to
make the most of a map that looks good _and_ has correct routing data.

> So, for the garmin, I am not sure that restrictions that have a Way for the
> 'via' member can ever be supported. Put it this way, if I knew how to
> implement it, I would do it anyway even if it wasn't actually very useful.

It'd be a real shame if it wasn't possible, even if there's only a
small number of realistic cases.  I wonder how the Garmin paid-for
mapping solutions model the same situation?

<...goes off to think about it some more...>

Keep up the good work.

Alan