Comparison of various routing algorithms for VANETS

Vehicular ad hoc networks (VANETs) technology is growing very fast which provides the communication between moving vehicles on the road and the road side units without using any infrastructure. VANET is a subclass of MANET but with a different property of having vehicles as nodes. These networks are key component for ITS and self-organized in nature. Due to highly dynamic topology and frequent disconnection properties of VANET, it is not easy to design an efficient algorithm. No routing protocol is efficient for all the scenarios of VANET, so it is required to review the existing protocols and find their advantages and disadvantages. This research paper contains the study of VANET and its routing protocols. This paper also presents the comparison of AODV, DSR, DYMO and OLSR routing protocols for VANET with their advantages and disadvantages.