A paper titled Estimating the Necessary Amount of Driving Data for Assessing Driving Behavior authored by Anna-Maria Stavrakaki, Dimitrios Tselentis, Emmanoul Barmpounakis, Eleni Vlachogianni and George Yannis has been published in Sensors. The study aims to  provide a methodological framework for estimating the amount of driving data that should be collected for each driver in order to acquire a clear picture regarding their driving behavior. Detailed data collected from smartphone sensors were used to test the proposed methodology. The findings suggest that here is no specific time point or number of trips after which driving behavior stabilizes for all drivers and/or all metrics examined. The driving behavior stabilization is mostly affected by the duration of the trips examined and the aggressiveness of the driver.