Abstract:

In order to establish proper toll discount rate and thus adopt and popularize the ETC(Electronic Toll Col-lection)technique reasonably,in this paper,the disaggregate method is applied to respectively analyze the rela-tionships between the fare discount rate and the selection of ETC technologies,average delay of the system, as well as the ratio of cost increment to benefit increment.Based on the analyses.an optimized model of fare discount rate is proposed,which minimizes the average delay and the ratio of cost increment to benefit increment. Moreover.an optimization algorithm on the basis of golden section method is presented.Thus, the optimum discount rate in an ETC system with certain roadway configuration can be calculated.

Key words: toll, discount rate, disaggregate method, golden section method, electronic toll collection system