International Journal of Environmental Research

International Journal of Environmental Research

A Partial Linearization Method for Multi-Objective Continuous Network Design Problem with Environmental Considerations

Authors
Sh. Afandizadeh 1
N. Kalantari 1
H. Rezaeestakhruie 2
1 Faculty of Civil Engineering, Iran University of Science and Technology, Iran
2 Faculty of Civil Engineering, Sharif University, Iran
10.22059/ijer.2012.505
Abstract
Nowadays, the environmental impact of transportation project and, especially air pollution
impacts, are major concerns in evaluating transportation projects. Based on this concern, beside definition of traditional objective functions like total travel time and total investment cost, different type of environmental related function is considered as objective function in urban network design. In this paper, the continuous network design problem (CNDP) is formulated as a multi-objective bi-level optimization problem. The objective function of the upper level problem is a weighted combination of total travel time, total investment cost and total vehicular emission in the network. The lower level problem is the traffic assignment problem which would predict the vehicular flow on each link in the network. A new solution algorithm is proposed for solving
the bi-level optimization problem by the partial linearization of the lower level problem. The solution algorithm was applied to the city of Sioux Falls, a well known transportation network.
Keywords
Environmental impact
Transportation network design
Bi-level optimization
Partial linearization
International Journal of Environmental Research
Volume 6, Issue 2 - Serial Number 2
Spring 2012
Pages 381-390