time-dependent vehicle routing problem is one of the most applicable but least-studied variants of routing and scheduling problems. in this paper, a novel mathematical formulation of time-dependent vehicle routing problems with heterogeneous fleet, hard time widows and multiple depots, is proposed. to deal with the traffic congestions, we also considered that the vehicles are not forced to come...

Reliable message propagation is an important means of communication in mobile ad hoc networks (MANETs), and serves as a fundamental component for various applications, such as mobile advertising, inter-vehicle safety message propagation, alert propagation to defend against cyber-attacks in MANETs. Reliable message propagation requires that a message can be delivered to a large percent (e.g. 90%...

This paper presents a methodology for solving the Periodic Vehicle Routing Problem (PVRP). Customer locations each with a certain daily demand are known, as well as the capacity of vehicles. In this work, the problem is solved by means of a two-phase heuristic. The first phase is the itinerary assignment to visit each customer, and in the second phase the routing is done for each day of the iti...

Nowadays, logistic companies are dealing with the pressure of a highly competitive environment and trying to reduce operational costs. At same time, customers requiring not wait so long get their delivery pickup demands satisfied. In this study, these two factors considered a-static-periodic solution strategy. The problem is modelled as Dynamic Vehicle Routing Problem Simultaneous Pickup Delive...