[GraphHopper] Source of higway and surface speed for bicycles

[Peter]

Hi Dominik,

yes, just guesses from developers on the road and no literature used.
Would love to see some more solid ground for this e.g. using OSM planet GPX

Keep in mind that these speeds are not max speeds but average speeds.
The maxspeed tag is handled differently in applyMaxSpeed.

Kind Regards,
Peter

On 30.04.2015 11:06, Dominic Keller wrote:
> Hi all,
>
> I am writing my master thesis about the influence of the
> infrastructure on bicycle speed. Beside doing on-road experiments I
> would like to give an overview, how routing algorithm calculate the
> speed of bicyclist.
>
> I have seen, that graphhopper uses a list of maxspeed parameter in
> BikeCommonFlagEncoder.java
> <https://github.com/graphhopper/graphhopper/blob/master/core/src/main/java/com/graphhopper/routing/util/BikeCommonFlagEncoder.java>,
> like
>
>     setSurfaceSpeed("gravel", 12);
>     setHighwaySpeed("service", 14);
>
> How did you defined these values? Are they just guesses? How did you
> guessed them? Or could you find them somewhere in literature?
>
> Thank you for your information!
> Regards, Dominic
>
>
> _______________________________________________
> GraphHopper mailing list
> GraphHopper at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/graphhopper

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/graphhopper/attachments/20150430/ffe0c36b/attachment.html>