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SUMMARY:NETWORK-WIDE TRANSFER SYNCHRONIZATION STRATEGIES IN A PUBLIC BUS S
 YSTEM
DTSTART:20260331T110000
DTEND:20260331T120000
DTSTAMP:20260416T025332Z
UID:96d9e240332f0cccfbbda153bf00521de05cab7c72444784e79fbf33
CATEGORIES:Conferences - Seminars
DESCRIPTION:Antoine Legrain is a professor at Polytechnique Montreal in t
 he Department of Mathematics and Industrial Engineering since 2019. His re
 search focuses on real-time operations management (online and stochastic o
 ptimization applied to dynamic problems) to improve access to healthcare s
 ystems and manage on-demand and multimodal transportation services.\nThis 
 talk presents a scalable methodology for real-time transfer synchronizatio
 n in urban bus networks\, using online stochastic optimization (OSO). The 
 approach integrates three key components. First\, an offline arc-flow mode
 l captures all control tactics—hold\, speedup\, and skip-stop—for a ma
 in line and its feeder connections\, using at graph-based representation o
 ver a fixed control horizon. Second\, the REGRET algorithm operates in rea
 l time within an OSO framework\, leveraging the offline model to evaluate 
 multiple stochastic scenarios and to select robust control tactics. Third\
 , a network-wide simulator (NWS) integrates the full OSO framework and re-
 optimizes decisions dynamically at each bus departure from any stop\, allo
 wing the coordination of multiple interconnected lines. The NWS is applied
  to the transit network of Laval\, Canada\, using historical vehicle posit
 ions and smart-card validations to replicate real-time stochastic conditio
 ns. Results show significant improvements in both passenger travel and tra
 nsfer times across a variety of network structures\, highlighting the scal
 ability and applicability of real-time transfer synchronization for urban 
 multi-line transit networks.\n 
LOCATION:GC C2 413 https://plan.epfl.ch/?room==GC%20C2%20413
STATUS:CONFIRMED
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