The main aim of Vehicular Adhoc Network (Vanet) is to incorporate drivers with ease and safety while driving on roads. Now-a-days many technologies are introduced which include different entertainments and improve protection against drivers for road safety by using many useful traffic services. One of the most important solutions is by sending alert messages to nearby vehicles regarding any emergency issues. The main goal of different dissemination schemes is to reduce the latency of message delivery as soon as any emergency situation occurs. As many dissemination schemes are available, it is very difficult to find an appropriate dissemination scheme for a particular scenario. In this paper, we have provided a comparative study on different multi-hop dissemination schemes under different view. This helps the researcher to narrow down their research work and provide an in-depth study in their area of interest.

Keywords : VANET, Dissemination, Rebroadcast, Mitigate, Relay, Protocol, Topology