Vehicular Ad-hoc networks (VANET) become an emerging technology due to the varity of their applications in intelligent transportation systems (ITS). It is a self-organizing network that is established between vehicles together, or between vehicles and infrastructure. The primary goal of these networks is to provide safety and comfort for drivers and passengers. By creating the vehicle network, each vehicle can exchange information to inform drivers of other vehicles about the current state of the road flow or in the event of any emergency to avoid accidents and reduce them, and reduce congestion on roads that affect people's living conditions, interruptions in their work and interests. The smart cities best environment to applay V2V communication where have and good infrastructure with artificial intelligence components for communication process between vehicle to vehicle. In this paper, Vehicular Ad-hoc Network technology, its challenges and its most important components will be presented. There are three main types in VANET: Vehicle-to-Vehicle (V2V), Vehicle-to-Infrastructure (I2I) and Infrastructure-to-Infrastructure (I2I). The paper’s objectives and method of implementation will be clarified by using hardware tools that address some of the road’s problems, including the sudden brake of the front vehicle, and the passing without prior consideration.
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