Hi all,
I am currently stuck with a problem when using the KraussPS model to simulate bicycle traffic in a hilly area.
When I use the KraussPS model, the speed of cyclists is always capped at either their
maxSpeed or desiredMaxSpeed value (these values are for a flat surface, according to the documentation and logic), even though it should be higher on
downhills. There are also some weird speed drops or constant values when using different parameters for the
maxSpeed or desiredMaxSpeed.
So, I tried replicating the logic of the KraussPS model in Traci (recreated the formulas for acceleration on the slope and further speed calculation) while using the default Krauss model to compare the results. And I found out that the formulas
work better in Traci, and the speed on a big downhill is higher than the
maxSpeed or desiredMaxSpeed limits. (Although still not as high as it should be based on the real-world experiment data, but that’s another story.)
So, my question is – is there a bug in the KraussPS model, and something is still restricting the speed to cross the limits for the flat surface, even when the surface is not flat?
The speed comparison graph from our simulation is attached, along with the files used for simulating KraussPS and KraussPS replicated in Traci.
Thank you very much.
Cheers,
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Danil Belikhov, M.Sc.
Research Associate
Bergische Universität Wuppertal
Fakultät für Architektur und Bauingenieurwesen
Fachzentrum Mobilität und Verkehr
Lehr- und Forschungsgebiet Radverkehr
Univ.-Prof.
Dr.-Ing. Heather Kaths
University of Wuppertal
School of Architecture and Civil Engineering
Center for Mobility and Transport
Chair of Bicycle Traffic
Pauluskirchstraße 7, 42285 Wuppertal
Tel.: +49-202/439-4432
radverkehr.uni-wuppertal.de/en/
