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Mathematical Problems in Engineering
Volume 2015, Article ID 848915, 8 pages
Research Article

An Intelligent Broadcasting Algorithm for Early Warning Message Dissemination in VANETs

School of IT Engineering, Catholic University of Daegu, Gyeongsan 712-702, Republic of Korea

Received 2 January 2014; Revised 14 October 2014; Accepted 14 October 2014

Academic Editor: Valentina Emilia Balas

Copyright © 2015 Ihn-Han Bae. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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