不确定条件下的公交网络公平设计
Equitable Transit Network Design Under Uncertainty
摘要：
提出了一个考虑供给侧不确定性的双层公交网络设计问题。上层问题确定频率设置，同时最大化的效率和公平的措施，这是由减少总的有效旅行成本和最小的减少有效旅行成本的所有OD对，分别定义。下层问题是基于可靠性的公交分配问题，该问题反映了供给方的不确定性对乘客路径选择行为的影响，数值研究表明：1）Pareto边界可能不是凸的; 2）同时提高效率和公平目标是可能的; 3）增加班次会恶化公平性;（4）旅客的风险态度影响两个目标之间的替代率。
英文摘要：
This paper proposes a bilevel transit network design problem considering supply side uncertainty. The upper level problem determines frequency settings to simultaneously maximize the efficiency and equity measures, which are defined by the reduction in the total effective travel cost and the minimum reduction in the effective travel cost of all OD pairs, respectively. The lower level problem is the reliability based transit assignment problem that captures the effects of supply-side uncertainty on passengers route choice behavior.Numerical studies demonstrate that 1) the Pareto frontier may not be convex; 2) it is possible to improve the efficiency and equity objectives simultaneously; 3) increasing the frequency could worsen the equity measure; 4) passengers risk attitude affects the rate of substitution between the two objectives.
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