Mesh routers based routing for saving human life in vehicular adhoc network. G Mary Valantina 1* , S Jayashri 2 1 Department of Telecommunication Engineering, Sathyabama University, Chennai, India 2 Adhiparasakthi Engineering College, Melmaruvathur, Kanchipuram District, Tamil Nadu, India Abstract Saving human life is the most important task than anything else. Day to day life faces loss of life due to accidents which can be avoided. Biologically inspired communication on road could save lots of life. A mesh sensor which is developed based on a combination of mesh router and wireless sensor can be used for communication between vehicles in a better way and could save human life. Vehicular Ad hoc Network (Vanet) enhances safety; comfort and entertainment services to human life.Vanet are a super class of Mobile Adhoc Network (MANET) with some unique characteristics. To disseminate traffic warning message to various receivers a multihop broadcast protocol is required. While doing this broadcast message overhead reduction is an important issue since it could directly have an effect on the packet collision probability and MAC layer contention time at each node. Already for VANETs there are some broadcast protocols in existence. But, most of them are designed under the assumption of the presence of the global positioning system (GPS).This paper proposes a broadcast protocol which does not require position information. This protocol includes mesh routers in the network that reduces the broadcast storm problem and increases the dissemination ratio. The efficiency of the proposed protocol is proved over some of the existing protocols in terms of Packet dissemination ratio, End to end delay, Number of packets broadcast and Mac overhead per node. Keywords:Human life, Collision probability, Broadcast storm, Mesh routers, GPS. Accepted on August 02, 2016 Introduction Rapid growth in the automobile industry makes a way for communication between vehicles which leads to Intelligent transportation system (ITS). More number of mobile users which is capable of acting as standalone devices are deployed to handle [1] some situations like establishing communication for emergency situations, rescue operations, natural calamities and secured services networks [2]. VANETs are super class of MANETs with some distinctive characteristics. Moving vehicles share information among them confined to the road infrastructure. A vehicle mounted with onboard communication unit can act as a node in the vehicular adhoc network. An accurate estimate of vehicle’s position can be made available through GPS systems or on-board communication unit. Communication in vanets can happen between the vehicles on road or between the vehicles and the road side units [3]. Figure 1 shows the connected car scenario. Communication between Vehicles requesting for nearest gas station, nearby parking lot, restaurant, hospital, multimedia exchange etc. This type of application mostly uses point to point routing protocol. Vehicle to Roadside infrastructure Communication based applications, such as the over speed warning, curve warning, change in the lane warning also uses point to point as well as broadcasting [4-6]. Emergency related messages like a sudden change in diversion of road due to some blockage in the road, accidents, sudden protests, bad weather etc will be broadcasted to all the approaching vehicles [7,8], Both in academia and industry, routing is the current area of research in VANET. Due to frequently disconnecting link nature of the nodes, there arises a need for a routing protocol which provides enhanced information delivery without route breakage [9-13]. Figure 1. Communication in vanets, V2V: Vehicle to Vehicle communication, V2R: Vehicle to Roadside unit communication. Biomedical Research 2016; Special Issue: S210-S216 ISSN 0970-938X www.biomedres.info Biomed Res- India 2016 Special Issue S210 Special Section: Computational Life Science and Smarter Technological Advancement