USING SIMULATION TO ASSESS INFRASTRUCTURE PERFORMANCE IN MULTICRITERIA EVALUATION OF RAILWAY PROJECTS

2nd International Conference on Road and Rail Infrastructure (CETRA 2012)

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Title USING SIMULATION TO ASSESS INFRASTRUCTURE PERFORMANCE IN MULTICRITERIA EVALUATION OF RAILWAY PROJECTS
 
Creator Giovanni Longo; University of Trieste - Dept. of Civil Engineering and Architecture
Giorgio Medeossi; University of Trieste - Dept. of Civil Engineering and Architecture
Elio Padoano; University of Trieste - Dept. of Civil Engineering and Architecture
 
Subject multicriteria evaluation, AHP, railway traffic simulation
 
Description Economic evaluation of projects of new railway infrastructures is a typical step of feasibility studies, but it is rather common to take into account other than transport aspects of projects such as their environmental or land use outcomes. Multicriteria methodologies may support decision makers during the process of evaluation and choice of candidate projects; notwithstanding a large part of the applications in the railway sector carry out a careful analysis of the negative impacts of the alternatives, but the reasons for the actual realization of the project are neglected. In fact, a railway infrastructure project aims to improve an existing situation by means of expected positive effects on, for example, accessibility or travel times. Nonetheless, the economic revenues, the positive effects on the social sphere or the specific transportation–related matters that a project might generate are often left in the background. The authors propose a model that includes different attributes that can characterize a railway infrastructure, e.g. the flexibility rate, the comfort offered to travellers, the access times to stations, the vehicle maintenance savings, the served population, the ticketing revenues. Thus the aim of this paper is to introduce a new structure for the decision problem that includes criteria related to the positive outcomes of each alternative project as well as its negative effects. It is worth noting that positive outcomes are, to a great extent, measurable directly or they can be assessed by means of simulation models. Some of the transport–related criteria are indeed related to the inputs and outputs of stochastic simulation, which can reproduce most processes involved in rail traffic, including deterministic aspects and human factors. This is particularly relevant in order to simulate traffic under realistic conditions, considering variability at border, various driving styles and stop times..
 
Publisher CETRA 2012
 
Contributor
 
Date 2017-02-28 17:37:12
 
Type Peer-reviewed Paper
 
Identifier http://master.grad.hr/cetra/ocs/index.php/cetra/cetra2012/paper/view/228
 
Source CETRA 2012; 2nd International Conference on Road and Rail Infrastructure
 
Language en
 
Rights <p>Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure II" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.</p>
 

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