Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79898
Title: Optimal design of intersecting bimodal transit networks in a grid city
Authors: Fan, WB 
Mei, Y 
Gu, WH 
Keywords: Bimodal transit network
Continuum models
Optimal design
Transit route choice
Issue Date: 2018
Publisher: Pergamon Press
Source: Transportation research. Part B, Methodological, May 2018, v. 111, p. 203-226 How to cite?
Journal: Transportation research. Part B, Methodological 
Abstract: The urban transit system in a real city usually has two major components: a sparse express (e.g. rail) network and a dense local (e.g. bus) network. The two networks intersect and interweave with each other throughout the city to furnish various route options for serving transit patrons with distinct ODs. The optimal design problem of this bimodal transit system, however, has not been well explored in the literature, partly due to the difficulty of modeling the patrons' complex route choice behavior in the bimodal networks. In light of this, we formulate parsimonious continuum models for minimizing the total cost of the patrons and the transit agency for an intersecting bimodal transit network in a grid city, where the perpendicular local and express lines intersect at transfer stops. Seven distinct route types are identified in this network, which represent realistic intra- and inter-modal route options. A lower-level assignment problem between these routes is embedded in the upper-level network design optimization problem. We develop an efficient method to find near-optimal designs of the intersecting network. Numerical results unveil a number of insightful findings, e.g., that sizable cost savings are observed for the intersecting bimodal design as compared to the single-mode designs for moderate to high demand levels, and that only moderate benefits are observed as compared to the trunk-feeder designs under certain operating conditions. We also show that the conventional practice of designing the local and express networks separately would greatly undermine the benefit of the bimodal system.
URI: http://hdl.handle.net/10397/79898
ISSN: 0191-2615
EISSN: 1879-2367
DOI: 10.1016/j.trb.2018.03.007
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

3
Citations as of Jan 14, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.