WIT Press


On Performance Sensitivity Of Urban Transportation Networks

Price

Free (open access)

Paper DOI

10.2495/UT080101

Volume

101

Pages

9

Page Range

101 - 109

Published

2008

Size

218 kb

Author(s)

A. Di Febbraro & N. Sacco

Abstract

The continuous increase in traffic, intended as interacting vehicles using a common infrastructure, leading to traffic congestion whenever mobility demand exceeds the infrastructure capacity itself, has put into evidence many needs in transportation. In this framework, the choice of the optimal solution is a difficult problem to tackle with, especially when uncertainties are taken into account. Therefore, the main effort of this paper is to define a selection criteria which helps in resource planning and in decision making, based on a sensitivity matrix computed for an a-priori chosen transportation performance index. Keywords: urban traffic networks, resources planning, performance index, sensitivity matrix. 1 Introduction The continuous increase in traffic, intended as interacting vehicles using a common infrastructure, leading to traffic congestion whenever mobility demand exceeds the infrastructure capacity itself, has put into evidence many needs in transportation. On the other hand, the limited economic and spatial resources are major reasons why the expansion of the already existing civil infrastructures has to be carefully evaluated. This is one of the reasons for which, in the last decades, communication and information technologies for the optimisation of the existing resources had found many applications in transportation. In effect, nowadays it is evident that the request of an efficient, safe, secure and less polluting transportation has to be faced generally by means of integrated solutions, including both the expansion of the infrastructures and the introduction ITS devices for traffic optimisation.

Keywords

urban traffic networks, resources planning, performance index, sensitivity matrix.