Traffic State Evaluation System Based on Cloud Model and Its Application
Gao Ya-ju · Journal of Highway and Transportation Research and Development · 2013
To evaluate road traffic state accurately and monitor road in real-time to improve the urban road traffic efficiency,through analyzing the establishment principles of evaluation system and selecting the evaluation indexes appropriately,the traffic state evaluation system based on cloud model is built. In the process of a comprehensive evaluation by cloud model which regards bus average speed,crowd coefficient and average velocity gradient as the evaluation indexes of evaluation system,membership function is constructed by using the method of gold partition rate to realize the conversion from quantitative variable to qualitative variable. According to the weighted average value of the maximum membership,the corresponding road traffic state evaluation result is obtained. Finally,using the bus electronic station board as means,a web designing platform is used for dynamic system demonstration of road traffic state,which verified the validity and applicability of the comprehensive evaluation method based on cloud model. An example of evaluating road traffic congestion effectively is given.