Journées de l'optimisation 2009 Optimizations days

We review the requirements to design, plan, and evaluate City Logitics systems. We focus on the physical design of two-tier systems: locating the various types of facilities and selecting, eventually, the access network, while accounting for the routing activities taking place at the two levels of the system. We identify problem settings, present models, and discuss algorithmic perspectives.

In two-tier City Logistics systems, two types of facilities are used: City Distribution Centers and satellite platforms. In this paper, we focus on the problem of routing city freighters, the vehicles that move goods between satellites and final customers, which involves the combination of several routes from different satellites. We propose decomposition-based heuristics to solve the problem.

In two-tier City Logistics we consider freight transportation demand with origin and destination located in the city itself, bringing in this way elements of uncertainty in the Day Before Planning problem. We address this more complex problem by enriching an already proposed hierarchical problem decomposition with a new decision level and solving it by a sampling-based method