3 papers
math.OC2026
Flexible and Reliable Network Design for Emerging Transportation Services: Multi-stage Stochastic Programming Approach
Riki Kawase, Koki Satsukawa, Toru Seo
This paper proposes a general framework for flexible and reliable network design problems (FR-NDPs). The framework enables planners to change infrastructure investments in response…
math.OC2026
Queue Replacement Approach to Dynamic User Equilibrium Assignment with Route and Departure Time Choice
Takara Sakai, Takashi Akamatsu, Koki Satsukawa
This study develops a hybrid analytical and numerical approach for dynamic user equilibrium (DUE) assignment with simultaneous route and departure time choice (RDTC) for homogeneou…
math.OC2026
A bottleneck model with shared autonomous vehicles: Scale economies and price regulations
Koki Satsukawa, Yuki Takayama
This study examines how scale economies in the operation of shared autonomous vehicles (SAVs) affect the efficiency of a transportation system where SAVs coexist with normal vehicl…