摘要
针对交通规划软件常用的BPR公交流量延误函数在饱和度接近或大于1时,计算值与实际值相差急剧增大的不足,提出一种锥形流量延误函数,并分析了其对公交行程时间的影响,进而通过等式关系实现模型在交通仿真软件EMME/3中的实用化。相关的案例分析显示,在公交行程时间拟合方面,锥形流量延误模型较传统的BPR曲线模型误差均值降低5.57%,误差的波动降低50.60%,效果显著。
For BPR volume delay function which is used in classical traffic planning software, when saturation ratio approaches 1 or over 1, the error between the calculation value and the real one becomes worse sharply. To overcome this disadvantage, a conical volume delay function is presented as a replacement, and its influence on transit travel time is also analyzed. Furthermore, the model utilization in traffic planning software EMME/3 is finished with equal relations. The result of the case study shows that the mean error of conical volume delay model has 5.52% decrement in the fitting of transit travel time compared with conventional BPR volume delay function, and reduction of its error fluctuation is 50.60% , which is remarkable.
出处
《公路交通科技》
CAS
CSCD
北大核心
2014年第4期120-124,共5页
Journal of Highway and Transportation Research and Development
基金
上海市一流学科项目(S1201YLXK)
2012年上海高校青年教师培养资助计划(slg12009)
上海理工大学大学生创新创业计划(XJ2013116)
关键词
交通工程
公交行程时间
锥形流量延误函数
交通分配
traffic engineering
transit travel time
conical volume delay function
traffic assignment
