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Dynamic evaluation of traffic flows on city roads
Author(s): 
Pages: 16-22
Year: Issue:  4
Journal: Engineering Sciences

Keyword:  dynamic evaluation of road network traffic V/C evaluation deferred conduction effect "five-dimension"congestion index;
Abstract: This paper presents an analysis of the random fluctuations, deferred conduction effect and periodicity of road traffic based on the basic features of road networks. It also discusses the limitations of road network evaluation theories based on road "V/C". In addition, it proposes a set of theoretical and technical methods for the real-time evaluation of traffic flows for entire road networks, and for solving key technical issues, such as real-time data collection and processing in areas with no blind zones, the spatial-temporal dynamic analysis of road network traffic, and the calibration of key performance index thresholds. It also provides new technical tools for the strategic transportation planning and real-time diagnosis of road traffic. The new tools and methodology presented in this paper are validated using a case study in Beijing.
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