This paper studies the need for individualizing vehicular communications inorder to improve collision warning systems for an N-lane highway scenario. Byrelating the traffic-based and communications studies, we aim at reducinghighway traffic accidents. To the best of our knowledge, this is the firstpaper that shows how to customize vehicular communications to driver'scharacteristics and traffic information. We propose to develop VANET protocolsthat selectively identify crash relevant information and customize thecommunications of that information based on each driver's assigned safetyscore. In this paper, first, we derive the packet success probability byaccounting for multi-user interference, path loss, and fading. Then, by Montecarlo simulations, we demonstrate how appropriate channel access probabilitiesthat satisfy the delay requirements of the safety application result innoticeable performance enhancement.
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