Modeling Emergency Messaging to Avoid Car Accidents using Ad hoc Networks Punith Bekal, Assistant Professor, Dept. of CS&E, K.V.G. College of Engineering, Sullia, D. K., Karnataka, India, Prasanna Shanbhag, Dept. of CS&E, K.V.G. College of Engineering, Sullia, D. K., Karnataka, India, Amrutha S. G, Dept. of CS&E, K.V.G. College of Engineering, Sullia, D. K., Karnataka, India, Shilpa S, Dept. of CS&E, K.V.G. College of Engineering, Sullia, D. K., Karnataka, India, Abstract - In Vehicular Ad Hoc Network (VANET), the remote Collision Avoidance (CA) framework issues notice to drivers before they achieve a possibly perilous zone on the street. This paper proposes a systematic model for assessing the execution of crisis informing through remote CA frameworks. In the first place, we use the dichotomized progress demonstrate, the braking model to produce vehicular versatility follows for examination. Second, we infer the likelihood of a backside crash between two vehicles that go in the same course when a sudden occasion happens. Third, we evaluate the likelihood of vehicles neglecting to get the crisis message. The model demonstrates that the quantity of auto crashes every mischance is much higher when a remote CA framework is not utilized. We likewise think that it intriguing that the quantity of auto accidents is not straightforwardly relative to the vehicle thickness when the vehicular versatility follows take after the pace thickness relationship. By coordinating stream hypothesis into VANET examination, our model gives valuable experiences for future smart transportation. I.INTRODUCTION A vehicular Ad hoc Network (VANET) uses cars as nodes to create a dynamic network. In VANET every moving cars turns into router, allowing each vehicle can be connected another vehicle approximately from 100 to 300 meters, in turn create a mobile network with wide range. As vehicles moving with different speeds, falls out of the communication range and will be discarded from the network. Similarly other vehicles can join in to the signal range by connecting one vehicle to another so that wide range of vehicular mobile network is created. A.VANET Architecture Vehicular Ad Hoc Network (VANET), as a special of mobile ad hoc network, it contains not only mobile nodes — vehicles, but also stationary Roadside Units (RSUs). In this Network, vehicles communicate through Dedicated Short Range Communication (DSRC) remote gadgets and also Furnished with many brilliant sensors. VANET empowers countless applications, what's more, the real objective is to enhance street wellbeing and transportation productivity by trading information between vehicles. Diverse sorts of VANET applications, each application will have different Region of Interest sizes. Many applications have a medium-sized compelling range which is up to one kilometer. Vehicles need to be mindful of the kinematic status of different vehicles in their quick regions i.e., a couple of hundred meters or the potential for unsafe conditions in a stretch of street that lies ahead. Then again, accommodation applications for the most part oblige a medium-to-extensive viable extent on the grounds that it is imperative for drivers to know the blockage circumstance or movement condition at this extent for settling on choices and outing arrangements. B.Applications of VANETs VANETs are considered as a standout amongst the most noticeable innovations for enhancing the effectiveness and security of modern transportation frameworks. Case in point, vehicles can communicate alternate route, auto collision, and clogging data with adjacent vehicles ahead of schedule to reduce traffic jam close to the influenced territories. VANETs applications empower vehicles to interface with the internet to get continuous news, activity, and climate reports. VANETs additionally fuel the unfathomable opportunities in online vehicle amusements, for example, gaming and document sharing through the Internet alternately the neighborhood impromptus system. Fig 1.1 VANET Architecture The following are the some applications of the vehicular ad hoc networks.  Safety messaging within the vehicles  Alarm messaging application  Video streaming  Web browsing  Video on demand facility  Internet sharing among passengers etc. Vol. 5 Issue 05, May-2016 International Journal of Engineering Research & Technology (IJERT) ISSN: 2278-0181 http://www.ijert.org IJERTV5IS050342 (This work is licensed under a Creative Commons Attribution 4.0 International License.) Published by : 255