ABSTRACT
However, the main application of DSRC is safety, and it is necessary to establish how to deliver the quality of service-that is, low latency and high availability-necessary to enact an OBE-to-OBE or OBE-to-RSE/RSE-to-OBE wirelessly delivered safety message. In this case, the entire network need not be accessible; rather, the edge of the network car-to-road or road-to-car can exchange detailed in-vehicle information that can be displayed in a nearly immediate and indeed urgent manner to the driver. Imagine an intersection that warns the inattentive driver that the yellow phase will imminently turn to red-and prevent a red light violation; imagine a car that brakes hard or conversely one that brakes moderately, with that safety information communicated via DSRC to the car or string of cars behind such that onboard processors and displays could provide or not provide a warning; imagine again the wealth of services that could enhance safety and along the way also increase transportation e ciency.1
