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[mkgmap-dev] Strange long distance routes on Nüvi

From nwastra nwastra at gmail.com on Wed Jul 26 21:47:31 BST 2017

TMC abbreviation:
Traffic Message Channel (TMC) is a technology for delivering traffic and travel information to motor vehicle drivers. .... have to be superimposed onto maps bymapping the reported location ...


> On 27 Jul 2017, at 1:46 am, Bodo Pfelzer <bodo.pfelzer at web.de> wrote:
> I use a gmapsupp.img generated with a reduced  style derived from the default mkgmap-style . Routing for cars works fine, if the routes are short. But if I try to plan a long journey (1000 km). The route calculation gets stuck for some minutes at lets say 80 percent and finally comes to a result. But the resulting route is something that looks like a concatenation of beelines. My assumption is, that Nüvi contains an overview map of the world (or Europe) that I cannot disable. Could I replace it using --tdbfile in mkgmap? But the option mentions MapSource, I tried to avoid MapSource for now.
> Routing works fine, if I disable Motorways (or toll roads), but the route seems to be somewhat inconvenient.
> Perhaps my questions is a little bit outdated, since there are good smartphone based apps for navigation. But I love my old fashioned Nüvi. This leads to the next question: Is there a chance that there will be TMC information compiled into mkgmap maps       sometimes in the future? As far as I understand, nobody knows where it is stored inside encrypted proprietary maps.
> Best regards
> Bodo
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