The hazardous material routing problem from an origin to a destination in an urban area is addressed. We maximise 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...

In the Vehicle Routing Problem with Deliveries, Selective Pickups and Time Windows, the set of customers is the union of delivery customers and pickup customers. A fleet of identical capacitated vehicles based at the depot must perform all deliveries and profitable pickups while respecting time...

We propose a novel extension of the set covering problem regarding an angular covering structure motivated by the location of surveillance cameras. The aim is to minimize the cost of covering a set of demand points using directional servers installed on facilities. We define preprocessing...