A Model for Road Traffic State Analysis Based on Fuzzy Comprehensive Evaluation
Maolei Zhang · Journal of Highway and Transportation Research and Development · 2010
Combined the characteristics of traffic flow,the parameters which have sensitive response and high accuracy to traffic state changes were selected as the indicators to discriminate road traffic condition.Considering all the circumstances,maximum phase saturation of intersection approach,ratio of the average maximum queue length at approach and average vehicle speed were selected as the characteristic parameters.A model for road traffic state analysis based on fuzzy comprehensive evaluation was designed,and the abovementioned methods were simulated via validation with VISSM4.20.The experimental result shows that the traffic state discrimination result from a single parameter is volatile and inaccurate.The discrimination result has good stability and accuracy after fuzzy comprehensive evaluation,and the proposed algorithm can enhance the effect of discriminating the real-time traffic status.