基于指向惩罚的交通信息发布下随机交通分配  

Stochastic Traffic Assignment in Consideration of Traffic Information Based on the Link-link Penalty

作　　者：李军[1] 谢良惠 黄琳 

机构地区：[1]中山大学工学院智能交通研究中心,广东广州510006 [2]济南市城市交通研究中心,山东济南250101 [3]广州至信交通顾问有限公司,广东广州510030

出　　处：《中山大学学报（自然科学版）》2013年第5期26-30,38,共6页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(51178475)

摘　　要：提出了通过对发布交通拥堵信息的路段进行阻抗惩罚的随机交通分配方法。出行者被分为"随机型"与"信息型"两类并进行logit型的随机路径选择,前者不受交通信息发布的影响,根据正常路阻进行路径选择,而后者会根据发布的信息,改变对下游路网阻抗的认知并根据新的阻抗进行路径选择。通过对发布拥堵信息的路段的路阻施加路段到路段的指向惩罚来反映"信息型"出行者的路阻变化,分别对两组类型的出行者进行随机网络加载,给出了基于混合流量加载的交通分配算法。实例验证了方法的有效性,并分析了交通信息服务的市场占有率和信息的发布方案对信息发布效果的影响。A stochastic traffic assignment method considering the impact of traffic congestion information based on the direction penalty is presented to calculate the traffic flows under traffic congestion informa- tion. The travelers who are assumed to have logit style route choice behavior are divided into two groups named ＂stochastic users＂ and ＂information users＂. The ＂stochastic users＂ are not affected by traffic in- formation and chooses route according to the normal route impedances, while the ＂information users＂ will follow the traffic congestion information to update route impedances and their route choices are based up- dated impedances. A direction penalty is added to the road-road connector to reflect the increased imped- ances by congestion information, a modified Dial algorithm with the consideration of direction penalty is employed for stochastic network loading of different users and method of successive average is used for stochastic traffic assignment. Two numerical examples demonstrate that the proposed method is efficient and robust, and the impacts of acceptance of traffic information and traffic information publishing strate- gies are discussed.

关 键 词：交通工程 交通信息发布 随机交通分配 指向惩罚 市场占有率 

分 类 号：U491[交通运输工程—交通运输规划与管理]