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为了研究拥堵收费政策在大规模路网内应用的潜在效果,利用微观仿真平台Paramics建立仿真模型,对北京市四环内不同收费区域大小、不同收费费率、不同交通方式分担下的多种拥堵收费方案进行评估.仿真结果表明,在不考虑交通方式转移时,选择较大的收费区域可以有效地减少车辆行驶里程并增加政策收入,但无法显著改善覆盖收费区域内外范围的整体路网的平均速度.当纳入交通方式分担的变化后,收费区外的平均速度会增加,广义成本也有望降低.“,”In order to study the potential effect of congestion charging policy in large-scale road network,a micro-simulation platform Paramics is used to establish a simulation model within Beijing fourth ring road.On this basis,multiple congestion pricing scenarios are assessed in consideration of charging zones size,charging rate,and travel mode shift.When the travel mode shift is put aside,the analysis shows that selecting a larger charging zone is more effective on reducing vehicle kilometers of travel and may increase the total charge revenue.However,congestion pricing appears no potential to significantly affect the average speed of the entire network.Further,taking the travel mode shift into consideration,the speed of external area can be improved and the generalized cost is expected to reduce.