Abstract
Urban public transport systems must be economically efficient and additionally environmentally sustainable. Available decision support systems, including multiple criteria decision models, allow identifying which urban public transport vehicles are acceptable and those that should no longer be used in efficient and environmentally friendly cities. Previous research has ranked urban public transport vehicles by applying analytic hierarchy process multi-criteria decision-making models, from economic and non-polluting perspectives. However, until now, the types of vehicles acceptable for fleet renewal have not been identified. This study proposes a consistent combination of the ELECTRE TRI multiple criteria decision sorting method and the DELPHI procedure, the objective of which is to identify which urban public transport vehicles are acceptable, taking into consideration a suggested sustainable threshold, which includes economic and environmental strict requirements. The proposed model is based on 2020 Madrid urban public road transport data, published by Madrid City Council, which were compiled by the authors, and assessed by a panel of 20 experts to identify criteria and factors included in the model. Findings help local administrations to identify which urban public transport vehicles should be progressively replaced by those classified as economically efficient and additionally environmentally sustainable.
Highlights
IntroductionThe motivation of this research is to apply multi-criteria decision analysis to help policy makers solve the problem of selecting acceptable urban public transport vehicles to replace those that have become obsolete and need to be replaced for reasons of economic inefficiency and/or environmental unacceptability
The motivation of this research is to apply multi-criteria decision analysis to help policy makers solve the problem of selecting acceptable urban public transport vehicles to replace those that have become obsolete and need to be replaced for reasons of economic inefficiency and/or environmental unacceptability.It is not easy for policy makers to decide what type of vehicles to use in their public transport systems because the most environmentally sustainable technologies are the most expensive
The originality of this study is to propose a new application of the combination of ELECTRE TRI multiple criteria decision sorting method and DELPHI procedure, the objective of which is to identify which urban public transport vehicles are acceptable, taking into consideration a suggested sustainable threshold
Summary
The motivation of this research is to apply multi-criteria decision analysis to help policy makers solve the problem of selecting acceptable urban public transport vehicles to replace those that have become obsolete and need to be replaced for reasons of economic inefficiency and/or environmental unacceptability It is not easy for policy makers to decide what type of vehicles to use in their public transport systems because the most environmentally sustainable technologies are the most expensive. Urban public transport vehicles with more environmentally sustainable technologies are in demand by citizens, but they are much more expensive because they have a much higher purchase price and need complementary facilities for their operation, which are not always affordable in economic terms given the budgetary constraints of public administration This work solves this important problem by helping public transport managers to make balanced decisions on the type of vehicles that should be part of their fleet, taking into account both environmental and economic criteria from an efficiency point of view. The results of the study make it possible to decide how to replace more polluting but cheaper vehicles with less polluting but more expensive ones in a gradual and balanced way
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