HBRP Publication Page 1-10 2020. All Rights Reserved Page 1 Journal of Sensor Research and Technologies Volume 2 Issue 3 A Review of Vehicular Ad hoc Network Broadcasting Techniques K. Thamizhmaran Department of ECE, GCE Bodi, Theni, Tamilnadu, India Corresponding Author E-Mail Id: tamil10_happy@rediff.com ABSTRACT VANET is a form of network that provide vehicle to vehicle and vehicle to infrastructure communication. The main goal of VANET is to provide the road safety. Various wireless communication technologies used for VANET, the IEEE 802.11p is to support the medium range communication characteristics of vehicular environments. One of the main issues of VANET is handover process. It can be commendably accomplished through FHP mechanisms .The handover algorithm for IEEE 802.11p depend on the vehicular communications. It is also characterized as autonomous, self-configured wireless network which has dynamic topology, variable network size and also constrained mobility. Due to these characteristics it needs an effective and efficient routing protocol to fit into an environment. The emergency alert message information are transferred through V2V communications, so the parameters like hub determination, delay, high mobility and frequent data disconnections plays vital role for communications. There are numerous VANET data dissemination strategies were applied, however it truly doesn't give sufficient transmission speed emergency oriented data transmission administrations. In a large portion of the circumstances it prompts sudden traffic congestion and accidents. To limit the equivalent, VANET network need insightful and powerful routing protocols for intra vehicle communication. The different data dissemination procedures used to share the information in highway and urban climate with great nature of services, rebroadcast and the confirmation of message when it arrives at the destination are considered and assessed with various exploration authors papers. It covers application areas, challenges, different dissemination techniques and security issues widespread in the VANET. Keywords: wireless communication, network, ad hoc network, VANET, routing INTRODUCTION A Vehicular Ad Hoc Network (VANET) utilizes cars as mobile nodes in a MANET to make a mobile network. VANET are expected to be key enabling technology for the delivery of wide range of services. VANET turns every participating vehicle into a wireless router or node, approximately covers a distance of 100 to 300 meters of each other to connect and create a network with a wide range. Thus communication are possible between vehicle to vehicle (V2V) and from vehicle to infrastructure (V2I) based network. In a VANET environment this devices are stations (STAs) installed in vehicles as On Board Unit (OBU) or access points (APS) located in fixed points along the road and usually referred to as road side units (RSU). The Traffic congestion and accidents are rapidly increasing with the increase in the usage of vehicles around the world. As per the united nation study report, India loses 3% GDP in road accidents. VANETs are the best solution to enhance transport features such as safety, traffic congestion and infotainment, where a large number of event driven messages need to be disseminated in a scheduled way within the infrastructural network. In Wireless networks, VANETs are created by applying the principles of MANETs to