1,721,014 research outputs found
The evaluation of public investments according to the cost-benefit analysis: An application to the formia-gaeta railway line
No full textNot always a decision-making process involving the transport system leads to making rational choices. There is a syndrome known in the literature as “planning fallacy”, according to which planners overestimate the benefits that an intervention will produce and/or underestimate the costs for its realisation and maintenance. The direct consequence of this syndrome is the implementation of “unnecessary” interventions or less useful and shared than others. In November 2016, the Italian Ministry of Infrastructure and Transport drew up the “Guidelines for the evaluation of investments in public works” which, in line with European guidelines, aim to guarantee more efficient and effective transport planning in Italy. Starting from these considerations, the aim of the study was to apply the recent Italian guidelines for drafting a cost-benefit analysis relating to the redevelopment of the historical Formia-Gaeta railway line located in the tourist area of Lazio region (centre of Italy), which suffers from traffic congestion problems and which is lacking in adequate public transport services
The evaluation of public investments according to the cost-benefit analysis: an application to the historical Formia-Gaeta railway line [La valutazione degli investimenti in opere pubbliche attraverso l'analisi costi-benefici: una applicazione alla riqualificazione della linea ferroviaria Formia-Gaeta]
No full textModelli e metodi per la simulazione della mobilità delle merci e della logistica a scala regionale
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The political-administrative genesis of metro Line 1 in Naples [La genesi politico-amministrativa della Linea 1 della metropolitana di Napoli]
No full textThis paper explores the political-administrative genesis of one of the major Italian public infrastructures of the twentieth century: Naples metro Line 1. It is highlighted in the period of time, the project has suffered, and at the same time, the choices of the different “political seasons” that the third city of Italy has undergone. From the beginning of the national railway system, which has become the best practice in terms of public transport, Line 1 has become, year after year, the heart of the Neapolitan and regional transport system, gaining international notoriety thanks to the so-called “Art Stations” and arriving today to transport over 45 million passengers / year
Renewing Bus Fleet into Diesel Plug-in Hybrid Electric Vehicles: Environmental Implications in a Medium-Size City in Italy
No full textIn urban and metropolitan area, the transport sector significantly contributes in terms of both fuel consumption and pollutant emissions. In this context the ex-ante evaluation (through quantitative methods) and the implementation of sustainable policies must be a central aim for urban mobility. Many papers deal with the importance to take rational decisions to improve the transportation system (.eg. Cascetta et al., 2015). The idea of this paper is to propose an ECO-rational transportation planning, that means acting in the best possible way considering the men’s health and the environment’s benefits (ECO-logocal) and are sustainable for an economic point of view (ECO-nomical). Starting from this definition, the question proposed is: are the so called “common” sustainable transport policies always eco-rational? For example the renewal of vehicle fleet; the use of light goods vehicles for urban distribution, the introduction of a restricted area in the city center, are always rational interventions? In this research I have tried to partially answered to this question, estimating the environmental impacts of using electric and/or plug-in hybrid electric vehicles for renewing the bus fleet for public transport services in an Italian medium size city. Results of the estimation show that updating (renewing) the 30% of the Salerno public transport bus fleet into electric vehicles the fuel consumption and the equivalent CO2 emissions will reduced to-7.2%, while the PM10 will reduced up to-10.0%. By contrast, from an economical point of view, the high acquisition cost for electric buses and the inefficiencies deriving from the low autonomy of the batteries suggest that this scenario is not “eco-rational”. The simulation results deriving from the renewing a percentage of the bus fleet into a diesel plug-in hybrid electric vehicles show comparable environmental impacts (scenario with bus equipped with two batteries for a double autonomy) and is economically sustainable with an investment cost of 4.8 millions of Euro and a payback period of about 10 years. © 2015, World Scientific and Engineering Academy and Society. All rights reserved
Simulation of a container terminal: estimation of equipment handling models and before and after analysis
No full textUn modello ad eventi discreti per la simulazione di un terminale di trasporto marittimo: un’applicazione al terminale contenitori di Salerno
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