RESEARCH ON ROAD CONGESTION MECHANISM AND STRATEGIES FROM A SPATIOTEMPORAL BEHAVIOR PERSPECTIVE:A CASE STUDY OF XIANGYIN TUNNEL IN SHANGHAI
Road congestion is a complex issue intertwined with time and space.Within established urban spatial patterns,addressing the often-overlooked time dimension could enhance urban operational efficiency and promote sustainable development.Using Shanghai's Xiangyin Tunnel as a case study,this research utilizes mobile signaling data to analyze the formation mechanism of road congestion from the spatiotemporal behavior perspective and proposes targeted congestion mitigation strategies.The study reveals that traffic flows generated by human activities exhibit complex spatiotemporal superposition and conversion relationships in local road sections.Multiple traffic flows with different origins and destinations overlap after equivalent temporal and spatial conversions.When the overlapped total flow exceeds the road's capacity,congestion peaks are formed.To address this issue,differentiated strategies such as rigid peak shifting and flexible guidance are proposed based on the spatiotemporal characteristics of different population groups'travel patterns.The potential for optimizing these strategies is assessed in different assumed scenarios,providing multi-scenario references for congestion policy formulation.The analytical approach and strategic thinking based on spatiotemporal behavioral characteristics offer insights for road congestion management.Moreover,they can be applied to understand and solve other complex urban issues,providing new ideas for refined urban management and sustainable development.
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