Vehicular ad hoc network (VANET) has gained much attention recently to improve road safety, reduce traffic congestion, and\nenable efficient traffic management because of its many important applications in transportation. In this paper, an early warning\nintelligence broadcasting algorithmis proposed, EW-ICAST, to disseminate a safety message forVANETs.Theproposed EW-ICAST\nuses not only the early warning system on the basis of time to collision (TTC) but also the intelligent broadcasting algorithm on\nthe basis of fuzzy logic. Thus, the EW-ICAST resolves effectively broadcast storm problem and meets time-critical requirement.\nThe performance of EW-ICAST is evaluated through simulation and compared with that of other alert message dissemination\nalgorithms. From the simulation results, we know that EW-ICAST is superior to Simple, P-persistence, and EDB algorithms.
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