. A popular example of opportunistic routing is the “delay tolerant” forwarding to vanet nework when a direct path to destination does not exist. The evaluation of this work is twofold. We implemented two prototypes on off -the-shelf hardware to show the technical feasibility of our opportunistic network concepts. Also, the prototypes were used to carry out a number of runtime measure- ments. Then, we developed a novel two-step simulation method for opportunistic data dissemination. The simulation combines real world user traces with artificial user mobility models, in order to model user movements more realistically. We investigate our opportunistic data dissemination process under various settings, including different communication ranges and user behavior pattern In this use Conventional routing in this case would just “drop” the packet. With opportunistic routing, a node acts upon the available information ,In this thesis optimize the routing by centrality information then refine by ant colony metaheuristics.In this method validate our approach on different parameter like overhead, throughput