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Vehicular Ad-hoc NETwork (VANET) is becoming a promising technology in which moving vehicles are able to exchange information between them without the need of infrastructure. The original idea of VANET is for the safety purposes such as warning the drivers when there is an accident happened in the front of the road. Nowadays, VANET is extended to offer more services like downloading emails transfer, assessing Internet and Global Positioning System (GPS) services. To make sure that information transmitted correctly, an efficient routing protocol is crucial and indispensable for coping with the rapid topology changes. In this paper, we developed an OPNET model to evaluate the VANET performance of Ad-hoc On-demand Distance Vector (AODV) and Dynamic Source Routing (DSR) protocols in the city with different scenarios. We found out that AODV outperforms DSR protocol in VANET with increasing vehicles.