[mkgmap-dev] avg speed on roads

Sat Apr 24 13:57:21 BST 2010

> On Fri, Apr 23, 2010 at 06:31:42PM +0200, Carlos Dávila wrote:
>> I think there are currently some tools in mkgmap to get a better time
>> estimation. I have the lines below in my points style file, which
>> certainly improve the arrival time estimation:
>> highway=traffic_signals { add mkgmap:road-speed = '-2'; add
>> mkgmap:road-speed-min = '1' }
>
> I found the road speed stuff in the source already. It seems it is in the default
> style hardcoded by street type/classification which should be possible
> to override with some tag i think.
>
> And a maxspeed has nothing to do with what i hav a problem with. All the
> roads i travel dont have a maxspeed set, are primary and thus for the
> time calculation my GPSMap 60 takes something like 80 km/h - which on
> la palma is on some parts more than twice the actual speed one can
> travel ... An its nothing time dependent - its something which depends
> on the physics of the street - tight corners reduce the speed beeing
> traveled ...
>
> Typical speed/ average speed would be more accurate ...

Yes of course. But this is the wrong mailing list for this.
First you have to set up a widely accepted tagging scheme for this. Once 
this has been done it should be no problem to use this data with mkgmap.

WanMil