A Review: Position based Routing Protocols in VANET

VANET is a type of mobile ad hoc networks (MANETs). The main difference between VANET and MANET is the mobility, and changing topology. However, it is not effective to apply the existing routing protocols of MANETs into VANETs. Vehicular Adhoc Network (VANET) uses vehicle to vehicle (V2V and V2I) communication to inform about the location of other vehicles and the traffic density. There are many routing protocols described in VANET. Research study shows that Position-based protocols are best suited in highly dynamic topology environment. In this study, we are mainly focusing on significant features, summarizing the advancements of the VANET position-based routing protocols and discussing the advantages and disadvantages of these routing protocols and compare them with other well known position based protocols.