SafeTRIP: A Bi-Directional Communication System Operating in S-Band for Road Safety and Incident Prevention. - Massimo Celidonio; Dario Di Zenobio; Ermanno Fionda; Guillermo Grau Panea; Sebastien Grazzini; Bernhard Niemann; Lorenzo Pulcini; Sandro Scalise; Emanuele Sergio; Sabino Titomanlio (VTC Spring, 2012)