Using the Grades Mechanism to Differentiate the Users in Vehicular Ad hoc Network (VANET)

End user is the key module of a future vehicular network and safety and non safety applications mostly focuses on the user’s safety and comfortable during the journey. Security of these applications are very significant and these life saving messages cannot be altered by any attacker. The behavior of the user plays a vital role whiles communicating with other users in a network. Trusted users are those people who behave in a trusted manner while sending and receiving safety or non safety messages in the network. If users change their behavior from a trusted user to a malicious user, it would be harmful for other users of the network. In this paper, the role of the end user in a vehicular network will be discussed in detail and three levels of trust grades for users will be proposed. It is necessary for secure vehicular communication that the user’s role in the network should be in a positive direction, and other users should take more benefits from this new future technology. KeywordsSafety and non Safety applications, Attacker, Trusted user, Behavior, Malicious User, trust grades.