A case study regarding an Italian LSP company is proposed in order to validate the simulation model. The LSP manages a medium size distribution center: upstream customers (i.e. the producer in the simulation model) and downstream ones (i.e. the retailer in the simulation model) are located in the proximity (i.e. the distance is less than 200 km) of the LSP distribution center: thus, deliveries from/to producer and from/to retailer could be carried out within a workshift (8 h).