Key Problems and Research Progress of Urban Road Traffic Examination
With the increasing occurrence of traffic issues,including congestion,accidents,emission,and energy consumption,it is important to prevent and manage them by improving the capacity and modernization of urban traffic governance.Focusing on urban road traffic,urban road traffic examination(URTE)is a critical foundation and effective section for traffic governance.It aims to identify and diagnose urban road traffic issues timely and accurately by monitoring the health status of traffic in the context of urban examination.With the rapid development of digitization,informatization,and automation,the technology for acquisition and analysis of traffic data has changed.URTE has already become a research focus,but is still in its infancy.In this study,based on an analysis of its connotation,extension,and basic theory,the concept and system structure of URTE are introduced,including the research and application system.According to the research system,the related fundamental theory and key technologies of URTE are reviewed.Relevant traffic data's essential features,application value,and corresponding traffic parameter calculation methods,including model-driven and data-driven,are summarized.Subsequently,characteristics of holistic urban road traffic,identification and corresponding features of traffic issues,and methods of indicator construction are reviewed.Furthermore,the causes of urban road traffic issues were analyzed from traffic planning,design,management,and control perspectives.Although the research on URTE has started to progress,a comprehensive review of this topic has revealed some key challenges that need to be addressed,including the construction of the URTE index system,diagnosis of the traffic health status,and analysis of traffic issue causes.Therefore,future research directions are proposed accordingly to provide a reference for URTE research.
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