Vehicular network became one of the most active and emerging fields of research during last decade. Its use in diversified applications (for example safe driving, congestion avoidance and even entertainment) will soon bring revolutionary changes in transportation system. However, researchers came with different solutions to support different applications of vehicular network. In this paper, we have designed novel system architecture and developed a generic priority based communication protocol for vehicular network. We have also presented an effective mechanism to alert drivers about upcoming accidents and congestion information.