Regensburg 2022 – scientific programme
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SOE: Fachverband Physik sozio-ökonomischer Systeme
SOE 15: Traffic Dynamics, Urban and Regional Systems
SOE 15.2: Talk
Wednesday, September 7, 2022, 17:30–17:45, H11
Bimodal transport: Making door-to-door transport sustainable and convenient — •Puneet Sharma1,2, Helge Heuer1, Steffen Muehle1, Stephan Herminghaus1,2, and Knut Heidemann1 — 1Max Planck Institute for Dynamics and Self Organization, Goettingen — 2Georg-August-Universität Göttingen
Decarbonization of passenger transport is essential for fighting climate emergency. While modern cities offer various modes of transportation, considered separately, none of them is both, sustainable and convenient. A taxi service is convenient, in a sense, due to door-to-door service, but is inefficient since it usually serves one customer only. Demand-responsive ridepooling (DRRP) with minibuses is more efficient, but leads to undue competition with line services (LS), which provide even better pooling but are less convenient due to fixed routes and stops. A combination of both modes, DRRP and LS, may provide an ideal solution but is challenging to organize. Here we introduce a model for such bimodal on-demand transportation based on a square-grid geometry. Our model quantifies under what circumstances bimodal public transportation is feasible, both in terms of convenience and ecological footprint. Moreover, the model yields estimates for how to operate (LS frequency, modal split) a bimodal transportation system optimally. Perhaps surprisingly, we find that operating LS at maximum capacity is not necessarily optimal. We also consider the intricate interplay between LS operations and DRRP performance, i.e., detours, waiting times, and occupancy, via simulations.