Vehicular Ad-hoc Networks routing protocols play an important role for communication between vehicles and road side units. We can’t use protocols of MANETs for VANETs because of different characteristics of VANETs like speed of movement of nodes, direction of movement and dynamic topology etc. Similarly VANETs routing protocols for highway network may not work well for urban areas because of different characteristics of highway network and urban area network. An efficient VANETs routing protocol should be able to send message to accurate destination with minimum delay and minimum overhead. Some routing protocols for VANET uses multicast approach and some uses broadcast approach. In this paper we will study various VANET broadcast routing protocols and will study their performance by comparing various parameters network reachability, received distance, transmission overhead and reception overhead.

Routing protocols, wireless networks, connectivity

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