Pontificia Universidad Católica de Chile Pontificia Universidad Católica de Chile
Bronfman A., Marianov A., Paredes-Belmar G. and Lüer-Villagra A. (2015)

The maximin HAZMAT routing problem

Revista : European Journal of Operational Research
Volumen : 241
Número : 1
Páginas : 15 – 27
Tipo de publicación : ISI Ir a publicación


The hazardous material routing problem from an origin to a destination in an urban area is addressed. We maximize the distance between the route and its closest vulnerable centre, weighted by the centre’s population. A vulnerable centre is a school, hospital, senior citizens’ residence or the like, concentrating a high population or one that is particularly vulnerable or difficult to evacuate in a short time. The potential consequences on the most exposed centre are thus minimized. Though previously studied in a continuous space, the problem is formulated here over a transport (road) network. We present an exact model for the problem, in which we manage to significantly reduce the required variables, as well as an optimal polynomial time heuristic. The integer programming formulation and the heuristic are tested in a real-world case study set in the transport network in the city of Santiago, Chile.