为分析先进出行者信息系统(advanced traveler information system,ATIS)对交通均衡的影响,建立一个考虑多用户多准则的交通均衡模型.在模型中,根据ATIS市场占有率和用户收入水平差异将出行者分为4类,对每一类出行者,基于出行时间和出...为分析先进出行者信息系统(advanced traveler information system,ATIS)对交通均衡的影响,建立一个考虑多用户多准则的交通均衡模型.在模型中,根据ATIS市场占有率和用户收入水平差异将出行者分为4类,对每一类出行者,基于出行时间和出行费用线性组合的出行成本,根据Logit模型进行路径选择.以中国深圳市梅林关的一个起讫点(origin-destination,OD)进行实证分析,发现市民出行成本与路段拥堵系数不能同时降低.在现今经济水平下,ATIS可减少人们平均出行成本.随着经济水平的提升,人们才会慢慢利用ATIS选择可以减少平均拥堵系数的路径.最后,对模型参数进行了灵敏度分析.展开更多
Compared with standard logit-based stochastic user equilibrium assignment model,the C-logit model describes route choice behavior in a more realistic way by considering the overlapping effect between routes.This paper...Compared with standard logit-based stochastic user equilibrium assignment model,the C-logit model describes route choice behavior in a more realistic way by considering the overlapping effect between routes.This paper investigates the inefficiency upper bounds of this model against the deterministic system optimum and the C-logit stochastic system optimum in terms of the total network travel time.It is found that the commonality factor of overlapping routes significantly affects the inefficiency bound,besides link congestion degree,total demand and the number of feasible routes.If the commonality factor is not considered,the efficiency loss resulting from selfishly stochastic travel behavior will be to large extent underestimated.展开更多
文摘为分析先进出行者信息系统(advanced traveler information system,ATIS)对交通均衡的影响,建立一个考虑多用户多准则的交通均衡模型.在模型中,根据ATIS市场占有率和用户收入水平差异将出行者分为4类,对每一类出行者,基于出行时间和出行费用线性组合的出行成本,根据Logit模型进行路径选择.以中国深圳市梅林关的一个起讫点(origin-destination,OD)进行实证分析,发现市民出行成本与路段拥堵系数不能同时降低.在现今经济水平下,ATIS可减少人们平均出行成本.随着经济水平的提升,人们才会慢慢利用ATIS选择可以减少平均拥堵系数的路径.最后,对模型参数进行了灵敏度分析.
基金supported by the National Basic Research Program of China under Grant No.2012CB725401the National Natural Science Foundation of China under Grant Nos.71271001 and 71401083the Program for New Century Excellent Talents in University under Grant No.NCET-13-0025
文摘Compared with standard logit-based stochastic user equilibrium assignment model,the C-logit model describes route choice behavior in a more realistic way by considering the overlapping effect between routes.This paper investigates the inefficiency upper bounds of this model against the deterministic system optimum and the C-logit stochastic system optimum in terms of the total network travel time.It is found that the commonality factor of overlapping routes significantly affects the inefficiency bound,besides link congestion degree,total demand and the number of feasible routes.If the commonality factor is not considered,the efficiency loss resulting from selfishly stochastic travel behavior will be to large extent underestimated.
