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Vehicular Ad Hoc Network (VANET) networks are very likely to be deployed in the coming years and thus become the most relevant form of mobile ad hoc networks. They provide wireless communication among vehicles and vehicle-to-road side equipment. The communication between vehicles is used for safety, comfort and for entertainment as well. The performance of communication depends on how better the routing takes place in the network. Routing of data depends on the routing protocols being used in network. In this article, we investigated different routing protocols for VANET. The main aim of our study was to identify which routing method has better performance in highly mobile environment of VANET.