2011, Volume 13, Issue 1
Strategic Study of CAE >> 2011, Volume 13, Issue 1
Real-time dynamic evaluation of urban netword
Beijing Transportation Research Center, Beijing 100055
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Abstract
This paper analyzes the dynamic nature of real-time traffic network performance measurement, with particular focus on random traffic flow fluctuation, traffic deferred conduction effect and traffic periodicity. The limitations of the traditional traffic network evaluation methods based on traffic V/C is discussed; followed by the presentation of a novel approach for real-time traffic network performance evaluation, which solves the previous technical issues such as data collection and processing with no blind region, dynamic spatial-temporal traffic network performance analysis and evaluation threshold calibration. The proposed approach is validated in a case study using the Beijing traffic network, which proves its rationality, efficiency and practicality. The implications of the research and methodologies presented in this paper provide new theories and perspectives for infrastructural planning, dynamic road network performance evaluation, etc.
Keywords
real-time traffic performance evaluation ; V/C evaluation ; traffic deferred conduction effect ; “five-dimensional” congestion index
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References
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