Abstract: A key component of Intelligent Transportation Systems (ITS), vehicle-to-vehicle (V2V) communication allows direct wireless communication between automobiles to improve road safety, ease traffic, and facilitate autonomous driving. The development of V2V communication protocols is examined in this literature review, with particular attention paid to updating systems, message distribution, and real-time data dependability. According to studies, efficient traffic management and collision avoidance depend on timely and context-aware message updates. To maximize data delivery in extremely dynamic vehicular environments, a number of models have been proposed, including broadcast-based, cluster-based, and machine learning-enhanced communication frameworks. The main conclusions and approaches are compiled in this review, which also highlights the present difficulties and potential paths forward for reliable V2V communication systems.

Keywords: Intelligent Transportation Systems (ITS), message distribution, Embedded C , ESP32 Microcontroller, broadcast-based

| DOI: 10.17148/IARJSET.2025.12709