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A Conceptual Model for Analyzing the Risks Involved in the Transportation of Hazardous Goods: Implementation in a Geographic Information System

The transportation of hazardous goods by road implies a risk for both humans and the environment, in that an accident involving a vehicle transporting this kind of material may cause extensive material and environmental damage and might even endanger lives. For this reason, both public and private entities (e.g., insurance companies) have a growing interest in studies that assess the risks associated with hazardous goods transportation This article describes a method for calculating these risks. The risk is determined on the basis of a calculation of the probability of the occurrence of an accident and the gravity of the damage, which is in turn a function of the potential damage inherent in the goods being transported taken with the vulnerability of the environmental medium in which the accident takes place. The mathematical model proposed is easily implemented in a geographical information system that will produce risk maps delimiting the more potentially conflictive stretches of roadway.