The though was proposed to evaluate comprehensively the effects of on-ramp chaos control in freeway using weighted principal component analysis(WPCA). Through system analysis, the synthetic evaluation indices of on-ramp chaos control in freeway were determined. The comprehensive evaluation model of on-ramp chaos control in freeway was established by using WPCA. The results of the concrete engineering example show that the evaluation indices 'weights of on-ramp users should be larger than that of mainline users in order to maximum efficiency and balance social equity if the mainline upstream traffic volume and ramp demand are large. Otherwise, the weights should be same for realizing mainly maximal efficiency and balancing social equity by way of parenthesis. The correctness of the condition, by which the chaos control signal is inputting rapidly and is canceled appropriately, and the validity of the comprehensive evaluation method were proved.
Journal of Hebei University of Technology
intelligent transportation system(ITS)
weighted principal component analysis(WPCA)