New Insights from the Analysis of Free Flow Vehicular Traffic in Highways - Serrano Yañez-mingot, Pablo; Hernandez Gutierrez, Jose Alberto; Calderon Pastor, Maria Carmen; Bernardos Cano, Carlos Jesus; Gramaglia, Marco (12th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2011), 2011)