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Abstract
New generation hybrid and electric models of mail delivery vehicles (quadricycles) were analyzed in terms of their environmental emissions and energy consumption. The aims of the present work are to compare on an environmental and energy point of view two recharge modalities (electric vehicle with a range extender installed on a specific ground station and hybrid vehicle with on-board range extender) and to evaluate the performance of a KERS (kinetic energy recovery system) system for the employment of the quadricycles for the postal service.