Abstract

The 9th International Conference on City Logistics, Tenerife, Iles Canaries, ESPAGNE, 17-/06/2015 - 19/06/2015; The aim of this paper is to study the location of the parcel industry, and its place in the spatial organization of logistics activities in the Paris Region. In particular, we wish to compare the location of the parcel industry to the location of other logistics activities. In order to do this, we review in part one the existing factors that determines the location of logistics activities. We use this literature review to draw initial conclusions on the distinctive characteristics of the parcel industry. In part two, we use existing data on the location of establishments in the Paris Region to study the dispersion of the parcel industry compared to the dispersion of other logistics activities. Finally, in part three, we provide a partial explanation for this difference: a spatial hysteresis of the big stakeholders of the parcel industry, and the emergence of innovative logistics solutions. Document type: Conference object

Abstract

In this paper, we present an improved distribution plan supporting an urban distribution center (UDC) to solve the last mile problem of urban freight. This is motivated by the need of UDCs to satisfy daily demand in time under a high service level in allocated urban areas. Moreover, these demands could not be satisfied in individual cases because the delivery rate can be less than daily demand and/or affected by random failure or maintenance actions of vehicles. The scope of our work is to focus on a UDC, which needs to satisfy demands in a finite horizon. To that end, we consider a distribution policy on two sequential plans, a distribution plan correlated to a maintenance plan using a subcontracting strategy with several potential urban distribution centers (UDCs) and performing preventive maintenance to ensure deliveries for their allocated urban area. The choice of subcontractor will depend on distance, environmental and availability criteria. In doing so, we define a mathematical model for searching the best distribution and maintenance plans using a subcontracting strategy. Moreover, we consider delay for the next periods with an expensive penalty. Finally, we present a numerical example illustrating the benefits of our approach. Document type: Article