The issue of bus routes, so it falls into the category of complex issues (NP-Hard). And finding answers to some of the bus routes, with appropriate techniques, thus solving the heuristic model as a tool to solve the problem.
Problems of the route is therefore categorized as a complex problem (NP-Hard) and to find answers to the route to be appropriate have the technical solutions heuristic than a tool. fix the problem
Vehicle routing problem, therefore, is classified in category complex problems (NP-Hard). And in finding the answers of the route to be appropriate to take a heuristic problem solving techniques as a tool to solve the problem.