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Title:

Solution Attributes of the Static Deterministic Traffic Assignment Problem with Unique Route Flows Determined by the Condition of Proportionality

Accession Number:

01371069

Record Type:

Component

Abstract:

The solution of the static, deterministic, user equilibrium (UE) traffic assignment problem uniquely determines total link flows but not route flows. In 2010, Bar-Gera proposed a computationally efficient algorithm, Traffic Assignment by Paired Alternative Segments (TAPAS), to determine route flows uniquely by incorporating a behaviorally justifiable condition of proportionality. Although TAPAS has been successfully applied to various scales of transportation networks, detailed solution attributes of the Pairs of Alternative Segments (PASs) that comprise the solutions of the UE model that have not been explored. This paper examines the attributes of PASs found by solving the traffic assignment problem with the condition of proportionality for three single-class congestion scenarios for Chicago regional network. Exploratory, descriptive analyses using graphical and map representations of selected PASs are used to illustrate findings and substantiate conclusions, and to provide a detailed examination of the structure of the route flow solutions yielded by TAPAS. An improved understanding of the results from TAPAS will assure transportation planning practitioners a concrete basis for their analyses especially when UE route flow solutions are required.

Supplemental Notes:

This paper was sponsored by TRB committee ADB30(2) Network Equilibrium Modeling

Monograph Accession #:

01362476

Report/Paper Numbers:

12-1434

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Aungsuyanon, Aroon
Boyce, David
Ran, Bin

Pagination:

15p

Publication Date:

2012

Conference:

Transportation Research Board 91st Annual Meeting

Location: Washington DC, United States
Date: 2012-1-22 to 2012-1-26
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Maps; References; Tables

Geographic Terms:

Chicago (Illinois)

Subject Areas:

Highways; Planning and Forecasting; I72: Traffic and Transport Planning

Source Data:

Transportation Research Board Annual Meeting 2012 Paper #12-1434

Files:

TRIS, TRB

Created Date:

Feb 8 2012 5:02PM