Recently Published: Carrion, Carlos and David Levinson (2012) Value of travel time reliability: A review of current evidence. Transportation Research Part A: Policy and Practice 46(4) 720–741.[doi]

Travel time reliability is a fundamental factor in travel behavior. It represents the temporal uncertainty experienced by travelers in their movement between any two nodes in a network. The importance of the time reliability depends on the penalties incurred by the travelers. In road networks, travelers consider the existence of a trip travel time uncertainty in different choice situations (departure time, route, mode, and others). In this paper, a systematic review of the current state of research in travel time reliability, and more explicitly in the value of travel time reliability is presented. Moreover, a meta-analysis is performed in order to determine the reasons behind the discrepancy among the reliability estimates.
Keywords: Variability; Reliability; Travel time; Scheduling; Meta-analysis