ABSTRACT
With the advent of the modern smart cities, the role of intelligent transportation systems is becoming more and more integral for guaranteeing secure and intelligent traffic flows since they facilitate vehicles to interact with several road entities, including but not limited to, other vehicles in their immediate ambience and vulnerable pedestrians, along with the supporting roadside infrastructure via V2X communication so that both the safety-critical and the non-safety vehicular (i.e., infotainment) applications could be realized. However, entities in such an IoV network are extremely vulnerable and are susceptible to a diverse range of external and internal attacks with the later one unable to be determined by the traditional cryptographic-based security techniques. In Chapter 3, a distributed trust management system has been thus proposed that takes into account the reputation segments ascertained as a result of a trustor's direct interaction with a trustee and through recommendations obtained from the one-hop neighboring vehicles of the said trustee to accurately ascertain its trust score. The envisaged trust management system takes into consideration the attributes of familiarity, similarity, and timeliness to determine the weight for each of the reputation segment. An intelligent trust threshold mechanism has also been proposed for identification and eviction of misbehaving vehicles in an IoV network in an accurate manner.
