01592734

Component

Network design is a challenging research topic which aims to optimize system performance by modifying network configurations. The objective of this study is to propose novel approaches to incorporate equity considerations into transportation Network Design Problems (NDP) from the perspective of link performance with energy consumption. First, an aggregated equity measure is analysed and defined mathematically as a function of link travel time and energy consumption along with free flow traffic conditions. The authors demonstrate that a Braess Paradox situation under the proposed equity metrics exists. Second, the authors formulate a bi-level programming model for the Link-based Equitable NDP ( 𝐿𝐸 -NDP). Specifically, the upper level is a multiobjective optimization program, which aims at minimizing the total system travel time and optimizing equity levels with respect to both travel time and energy consumption. The lower level represents the demand response under user equilibrium conditions. The authors estimate the price of fairness within the proposed 𝐿𝐸-NDP model. Third, a tailored solution methodology is developed to solve the proposed multiobjective 𝐿𝐸-NDP. The proposed algorithm uses an 𝜀-constraint method to identify Pareto efficient solutions, and constraint optimization formulations are presented to solve the resulting single-objective programs. Finally, systematic evaluation of the behaviour of the model and solution algorithm is conducted on two synthesized networks with varying parameters. The results highlight that the proposed approach is capable of generating more balanced solutions when the equity metrics are considered, and present the trade-offs between travel time and equity, and between different equity metrics.

This paper was sponsored by TRB committee ADB30 Standing Committee on Transportation Network Modeling.

01584066

16-3252

English

24p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; References; Tables

Alternatives analysis; Design; Energy consumption; Equity; Metrics (Quantitative assessment); Network links; Optimization; Travel time

Network design problem

Design; Energy; Highways; Planning and Forecasting

Transportation Research Board Annual Meeting 2016 Paper #16-3252

TRIS, TRB, ATRI

Jan 12 2016 5:26PM