In the last decade it was possible to observe a strong pressure from public opinion to reduce the accidents with environmental consequences and road collisions. Several multinational companies, Non Governmental Organizations, as well as Governments have invested great amount of resources for this aim. Alpha, an oil company, with large operation in Central America, made an enormous carriers reduction in this region, with the objective of being able to manage, in a suitable manner, their contractors and work altogether in the search of accident minimization. Thus, in the lapse of three years the company cancelled its relation with almost one hundred of road transport contractors, and restructured its operation of contracted transport. In order to have only one fraction of the contractors, in relation to what the company had before, a great variety of techniques of analysis for carriers was used. Techniques such as electronic negotiation by Internet, and a multi-criteria decision method developed by the company. Each of these stages was reviewed and compared with the academic bibliography that corresponded. This made possible the comparison of models only written in the bibliography relating their practical application. The results show that the case studied, besides having managed to reach its objective, is a case of success, bringing valuable contributions to the academic bibliography.