Heuristics for the multi-vehicle covering tour problem

The multi-vehicle covering tour problem is de"ned on a graph G"(<X=, E), where= is a set of vertices that must collectively be covered by up to m vehicles. The problem consists of determining a set of total minimum length vehicle routes on a subset of <, subject to side constraints, such that every vertex of= is within a prespeci"ed distance from a route. Three heuristics are developed for this problem and tested on randomly generated and real data.