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A methodology for assessing the urban supply of on-street delivery bays

Green Energy and Intelligent Transportation 2022年第3期1卷 63-72页

作者： antonio comi JoséLuis Moura Sara Ezquerro University of Rome Tor Vergata RomeItaly University of Cantabria SantanderSpain

The loading and unloading operations carried out by transport and logistics operators have a strong impact on city mobility if they are not performed *** loading/unloading bays,i.e.,delivery bays(DB),are not available for freight vehicle operations,operators may opt to double park or park on the sidewalk where there is no strong enforcement of these laws,with significant impact on *** paper proposes a methodology for verifying and designing the number of delivery bays needed for freight vehicles for not interfere with cars or *** methodology consists of two stages:in the first stage,an initial estimation is made using queueing ***,in the second stage,using such tentative scenario,in order to take into account the system stochasticity involving different entities,a discrete event simulation is performed to more realistically verify and upgrade(if necessary)the number of delivery bays to obtain the expected *** methodology was applied in the inner area of Santander(Spain).The study area was subdivided into 29 zones where the methodology was applied *** results indicated that none of these zones currently have an optimal number of delivery bays to satisfy *** some zones,there is an excess of delivery bays,although in most of them,there is a deficit which can cause significant impacts on *** method proposed can be an effective tool to be used by city planners for improving freight operations in urban areas limiting the negative impacts produced in terms of internal and external costs.

关键词： Urban freight transportation On-street delivery bays Discrete event simulation City logistics Urban goods movements

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A Delivery Approach Modeling for Urban Freight Restocking

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Journal of Civil Engineering and Architecture 2012年第3期6卷 251-267页

作者： Agostino Nuzzolo Umberto Crisalli antonio comi Department of Enterprise Engineering "Tor Vergata" University of Rome Italy

This paper proposes a modeling system developed in order to analyze the urban freight transport and logistics within urban and metropolitan areas. A review of models developed to simulate this segment of mobility is also reported. The review analysis highlights the limits of models for the ex-ante assessment of city logistics measures. For this reason this paper proposes a new modeling system approach for the assessment of city logistics measures. It is made of different steps approaching problems related to quantity OD （Origin-Destination） flows, restocking type OD flows, delivery OD flows, delivery OD flows for time slice and vehicle type, and vehicle OD flows. This modeling system has been specified and calibrated using some surveys carried out in the inner area of Rome where more than 500 truck drivers and more than 600 retailers have been interviewed.

关键词： Urban goods movements urban freight demand model delivery approach city logistics assessment.

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