Table 3 Definition of trust in VANETs

The belief that an entity has about other entities, from past experiences, on knowledge about the entity’s nature, and/or on recommendations from trusted entities.

Trust mechanisms not only help in node behavior detection, but also improve network performance because honest nodes can avoid working with untrustworthy nodes.

Trust is a relation among entities that is established based on the observations of historical interactions.

Trust is the key element in creating a trusted vehicular environment which promotes security in vehicular networks.

A trust value is introduced in order to support the rating of intersecting nodes as benign or malicious.

Trust can be described as the expectation and belief about future behavior, based on experiences and evidences collected in the past, either direct or indirect.

Trust describes the level to which an entity accepts the dependence on another one.