Vehicle park management through the Goal Programming model

The "Ministere des transports du Quebec" has a fleet of equipment to maintain the roads of the province of Quebec. The management of the fleet is the responsibility of the "Centre de Gestion de l'equipement Roulant". They decide whether an old item of equipment will be sold, replaced or maintained. Several factors, sometimes conflicting, come into play in the decision making process. They include reducing the fleet by 20%, respecting the budget, meeting the customer requirements, and maintaining and renovating certain aspects of the equipment. As a management tool, we propose Goal Programming model with the integration of the decision-maker's preferences.