On the analysis of two new models for transporting hazardous materials

This paper considers two new decision-making problems in the context of transporting hazardous materials (HM). These problems are motivated by the fact that many practical situations only have a finite number of shipments of HM to be made and that shipments are likely to be suspended after a threshold number of accidents. Both problems are nonlinear, constrained shortest path problems. Exact solution methods are proposed and computational results are reported for the case where the threshold number of accidents is one. Extension of the methodology for higher values of the threshold number of accidents is also outlined.