Resumen
As a neutral partner, a 4PL is in an ideal position to manage and promote collaboration between transportation networks. The present article aims to quantify the benefits of a horizontal collaboration and thereby evaluate its feasibility for the different parties. The model developed consists of hierarchically structured scenarios to calculate and evaluate benefits in the dimensions of costs and CO2 emissions. The model validation is done using data from four transportation networks managed by a European 4PL. The four transportation networks consist of nearly 4000 supply relations in total with about 3100 shipments per week.