Jul 2026· TOP - An Official Journal of the Spanish Society of Statistics and Operations Research· 0 citations· 17 references
Abstract
This paper addresses the challenge of congestion in time-expanded networks, focusing on a case study related to maritime evacuations. The problem is made complex by an endogenous relationship between inputs and outputs, where the assignment of flow to an edge leads to increased congestion, which reflects in later arrivals and changes on the overall network topology. This dynamic interaction between flow and congestion is central to the problem, as it results in a feedback loop that complicates the identification of optimal evacuation paths. The study presents an iterative algorithm inspired by the network-simplex method, designed to handle the evolving nature of congestion while minimizing evacuation time. While the primary case study involves cruise ship evacuations, the approach is generalizable to other cases where congestion and nonlinear flow dynamics are significant factors. By considering lifeboat capacity, passenger mobility restrictions, and the impact of congestion on network structure, this work provides a practical initial plan for an evacuation off-shore, considering a congested, time-expanded network setting.
In response to the issue of nonlinear mutations and increased vulnerability of urban traffic networks caused by disturbances such as emergencies, traditional allocation methods based on expected travel time or deterministic impedance are unable to reflect the differentiated preferences of travelers for reliability and...
Lei Wu, Jinglong Dai· The 2026 International Confe...· 0 citations
A demand-driven signal control strategy is developed to allocate green time based on real-time vehicle demand, eliminating wasted signal phases and providing a scalable and intelligent solution for modern smart city traffic systems.
Friday Idakwo David, S. T. Apeh, Oduware Okosun· E3S Web of Conferences· 0 citations
This paper addresses morning commute congestion caused by concentrated school-related trips in urban networks. We propose a bi-level optimization framework for regulating school start times in a multi-region urban network characterized by Macroscopic Fundamental Diagrams (MFDs), explicitly coupling system-level regulat...
A. Georgantas, S. Timotheou, C. Panayiotou· 0 citations
Traffic congestion in urban centres is a persistent challenge with long-term socioeconomic, environmental, and health consequences. Lagos, Nigeria, one of Africa's fastest-growing megacities, faces severe gridlock across its road network managed by the Lagos State Transport Authority (LAMATA), which serves over twenty...
Anthony O. Adekoya, W. Adedeji, S. Oyelami et al.· R E M (Rekayasa Energi Manuf...· 0 citations
The safe and secure operation of power system networks remains a significant challenge due to the ever-increasing demand for electrical energy. In deregulated environments, there is a strong emphasis on the optimal and efficient utilization of existing resources. This work aims to address line congestion by optimally r...
Jayesh G. Priolkar, G. Kunkolienkar· International Journal of Ele...· 0 citations
Addressing the issue of road network vulnerability caused by the failure of critical transportation nodes, this study focuses on traffic flow reconstruction and adaptive optimization of the public transportation system following a major bridge collapse. The study first constructs a traffic flow model for urban transpor...
Yunhao Hao, You-Bang Wang, Huixin Zhao et al.· International Conference on...· 0 citations
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