# Road to Efficiency: V2V Enabled Intelligent Transportation System
## 1 Introduction  
Intelligent Transportation Systems (ITSs) are revolutionizing the transportation industry by integrating advanced wireless communications systems to improve efficiency, security, and sustainability. These systems aim to reduce traffic congestion, shorten travel times, improve safety, and minimize environmental impacts [1]. An ITS encompasses electronic toll collection, dynamic route planning, autonomous vehicle technology, and real-time public transportation tracking. These developments support daily mobility and contribute to social objectives like emission reduction, energy conservation, and better urban planning [2; 3]. The emergence of technologies like IoT and 5G connectivity has accelerated the acceptance of ITSs. Vehicular Ad-hoc Networks (VANETs), vehicle-to-vehicle (V2V), and Mobility Prediction are significant ITS applications designed to enhance vehicle movement and alleviate traffic congestion [4]. V2V communication represents a paradigm shift in vehicular connectivity, enabling real-time information exchange between nearby vehicles [5]. As automotive technology continues to evolve, the integration of V2V communication becomes increasingly crucial for enhancing road safety, traffic efficiency, and the overall driving experience. The fundamental premise of V2V communication revolves around vehicles acting as intelligent entities capable of sharing crucial data, including speed, position, and status, with nearby vehicles [6; 7]. This shared information forms the basis for proactive decision-making, contributing to creating a connected and cooperative vehicular ecosystem. This study aims to establish the significance of V2V communication in the broader context of intelligent transportation systems. By providing a contextual framework, we set the stage for a focused exploration of the infrastructure components that play a pivotal role in shaping the effectiveness and reliability of V2V communication. Recently, V2V communication technologies have becomeessential in ITS development, potentially transforming road safety, traffic flow, and the driving experience. The paradigm shift is driven by progress in wireless communication, edge computing, artificial intelligence, and blockchain technologies [8]. These advancements are focused on improving vehicle connections and facilitating real-time data exchange between vehicles [9]. As more connected cars become available, assessing and comparing the effectiveness of different V2V communication protocols in various situations and environments is crucial [10]. This enables stakeholders to make informed decisions and develop strong and adaptable solutions to the complexities of modern transportation conditions. In the era of smart and connected transportation systems, the effectiveness of V2V communication hinges on the intricate interplay of advanced infrastructure components [11]. It is imperative to recognize the pivotal role that infrastructure components play in realizing the full potential of this paradigm [12]. Moreover, the effectiveness of V2V communication depends on the deployment of specific infrastructures, including roadside units, onboard units, and communication gateways. These components are the backbone of a connected ecosystem, facilitating the seamless transmission and reception of critical data among vehicles. Understanding and optimizing these infrastructure elements are essential for unlocking the full potential of V2V communication, ensuring not only enhanced sustainable road safety but also contributing to the development of ITSs [13; 14]. Therefore, V2V communication technology offers several advantages that can help reduce traffic congestion, enhance road safety, and lessen the negative impact on the environment. By providing vehicles with real-time information, V2V communication enables proper traffic flow, increased awareness among drivers regarding potential dangers, and improved traffic flow on the roads [15].