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Title:

City Logistics: Freight Management with Time-Dependent Travel Times and Application to Large-Scale Networks

Accession Number:

01476540

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In this paper, the authors address freight management in large, congested urban settings. Congestion creates a substantial variation in travel time (speeds) during morning peak and evening peak periods. Urban route designs that ignore these significant variations are often found to be inefficient or even infeasible within a congested traffic environment. This limitation may lead to delays, higher operational costs, and inferior customer service. To take account of the dynamics of traffic conditions, the proposed modeling framework includes an underlying dynamic network traffic simulation-assignment (DTA) model which is able to compute time-dependent shortest paths (TDSP) and simulate individual vehicles on a more realistic representation of the urban road network elements, including signalization, ramp metering, and other operational controls. An intuitive and efficient heuristic solution algorithm is proposed, which combines the classical k-opt exchanges to improve the solution and a procedure to reduce the number of vehicles out for service. No parameter tuning is required and no random choice is made. The integrated modeling framework is capable of addressing time-dependent vehicle routing problems (TDVRP) of practical sizes on a real world urban network, demonstrated here on the Chicago area network, with problem instances of up to 500 customers with TDSP updated at 10-minute intervals.

Supplemental Notes:

This paper was sponsored by TRB committee AT025 Urban Freight Transportation.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-2963

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Jiang, Lan
Mahmassani, Hani S

Pagination:

21p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Dynamic networks

Geographic Terms:

Chicago (Illinois)

Subject Areas:

Administration and Management; Freight Transportation; Planning and Forecasting; I10: Economics and Administration; I72: Traffic and Transport Planning

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-2963

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:36PM