Abstract:This paper presents a methodology for appraisal of congestion level for traffic control on expressways using fuzzy logic. The congestion level indicates the severity of congestion and is estimated using speed and density, being the basic traffic parameters that describe state of a traffic stream. Formulation of the fuzzy rule base is made based on knowledge on traffic flow theory and engineering judgments. Field data on a segment of the Pan-Island Expressway of Singapore were used to estimate the congestion le… Show more
“…They are both quantitative measures that characterize operational conditions of a traffic stream on the expressways. The use of both of speed and density is necessary to better represent the operational conditions of expressway traffic [25,41].…”
“…They are both quantitative measures that characterize operational conditions of a traffic stream on the expressways. The use of both of speed and density is necessary to better represent the operational conditions of expressway traffic [25,41].…”
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