Vehicular ad hoc networks are studied with increasing interest for the many possible applications they have. Equipping vehicles with wireless devices primarily allows to design protocols and mechanisms to improve street safety. But also distributed applications for cooperative work, fleet management, passengers entertainment, could be supported. However, novel network protocols must be designed to make the deployment of vehicular networks possible. We propose a novel position-based routing algorithm that is able to exploit both street topology information achieved from geographic information systems and information about spatial distribution of vehicles along street and vehicular traffic, in order to perform accurate routing decisions. Vehicular ad hoc network, is used in many applications such as assisting driver with signage, road traffic reporting, telling the way, etc. Since VANET has highly dynamic topology and various vehicle densities, developing a routing protocol that can satisfy above applications requirements is a great challenge. we present an efficient Road and Traffic-aware Routing Protocol , in which the best path to transmit data packets is calculated,also we present weather situations of road.

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VANET data forwarding scheme routing protocol traffic-aware density-aware