As a major result of the rapid population growth around the world, the number of road users, vehicles, drivers, passengers and pedestrians has increased dramatically, resulting in the need for a rapid development in transport systems to deal with everyday challenges to provide a safe, reliable, comfortable and efficient environment. In this paper, we explore the background of V2I, I2V communications and CNs/UMTC, and highlight some of the past research that has been conducted to examine priority-based communication in vehicular communication. We introduce a Priority-Based Vehicle-to-Infrastructure Communication (PV2I) protocol which forms a set of rules in both Network and MAC layers which offers a level of control over the transmission of data in the road environment, in terms of the amount of priority that should be given to a certain vehicles over others. PV2I will make use of two approaches: the ACCESS Services Class (ASC) in the UMTS Random Access Channel (RACH) to provide a dynamic priority assignment and the IP QoS Precedence attribute to provide a fixed priority for nodes at all time. Simulation and experiments will be conducted, using the QualNet simulator, to investigate PV2I applicability in a real traffic environment.