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A portfolio approach for optimal fleet replacement toward sustainable urban freight transportation
Institution:1. Centre for Research and Technology Hellas (CERTH), Hellenic Institute of Transport (HIT), 6th km Charilaou-Thermi, 57001 Thessaloniki, Greece;2. Centre for Research and Technology Hellas (CERTH), Hellenic Institute of Transport (HIT), Egialias 52, Marousi 15125, Athens, Greece
Abstract:Recently, the use of more sustainable forms of transportation such as electric vehicles (EVs) for delivering goods and parcels to customers in urban areas has received more attention from urban planners and private stakeholders. To provide some insights toward the use of EVs, this work develops an optimization framework using portfolio theory, which takes into account the cost and the risks associated with some input parameter uncertainties, for determining an optimal combination of EVs with internal combustion engine vehicles (ICEVs) in urban freight transportation (UFT) over some planning time period. This model can assist an urban freight operator to choose the best investment strategy for introducing new vehicles into its fleet while gaining economic benefits and having positive impacts on the urban environment. When taking into account the risks that are involved, the numerical results show that EVs have the potential to compete with ICEVs in UFT.
Keywords:Urban freight transportation  Electric vehicles  Portfolio theory  Risk analysis
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