A Review on Trust Model in Vehicular Ad Hoc Network

In vehicular ad hoc network (VANETs), the applications mainly focused on the road and making their journey safe and comfortable to fulfill the users' requirements. It is a challenging subclass of Mobile Ad-hoc Network, which empowers smart transmission among vehicles and between vehicles and roadside frameworks. It is an optimistic methodology for the Intelligent Transport System (ITS). There are numerous difficulties to be tended while utilizing VANET. It is flexible and has a high dynamic topology and flexibility which makes the conventional MANET protocols unacceptable for VANET. Trust is a principal element which is used to create a trustful environment to improve the security in vehicular networks. Trust can be calculated by observing the human behavior which creates a trusted communicating environment. In this paper, we define the architecture of VANET, then the communication establishment and various challenges. Some trust models had been defined in this paper to enforce honest information sharing between communicating nodes. Trust establishment is compulsory among communicating vehicles to build a secure messages exchange and reliability.