[GraphHopper] Source of higway and surface speed for bicycles

[Dominic Keller]

Thank you for your information, Peter.

If I get some nice results, I will inform you!

I dont know anything about useful gps-tracks available online, so I am
collecting data myself. The gps-tracks on planet GPX do not have timestamps
and no information about travelling mode, do they?

Kind regards,
Dominic

2015-04-30 11:14 GMT+02:00 Peter <graphhopper at gmx.de>:

>  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 B
> ikeCommonFlagEncoder.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
>
>
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