Vanet Challenges of Availability and Scalability

In this large growing world, vehicles on the road have increased in recent years. Due to the huge volume of these vehicles on the road, potential threats and the road accidents are also increasing day by day. To overcome these threats, wireless technology called VANET (Vehicular Ad hoc Network) has been designed. Through this wireless technology, vehicles exchange some messages to avoid bad circumstances. In VANET, a warning message can be generated and propagated to the other vehicles to notify their drivers about the congestion zone or about an accident.   There are many issues in the VANET which need to be improved to make the communication fast, secure and effective. In this paper, we have analyzed many issues of VANET including security, scalability, mobility and different types of attacks. In our proposed solution, we have used GSM (Global System and Mobile Communication) technology in combination with WiFi technology to resolve the mobility and scalability issue. We have also implemented AAA (Authentication, Authorization and Accountability) model in our proposed solution