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Much good work has been done in recent years by the National Highway Traffic and Safety Administration (NHTSA) in the design, specification, and testing of potential future Vehicle-to-vehicle (V2V) safety systems that will provide early warning of impending hazards to drivers. During this same time, Industry has been hard at work developing autonomous crash avoidance systems, based solely on data gathered from in-vehicle sensors. This paper proposes a fusion of V2V cooperative safety systems and in-vehicle sensor-based systems to increase the effectiveness of both systems and provide incentive to speed adoption of Dedicated Short Range Communication (DSRC) based V2V safety systems. The proposed solution may be used to provide many of the benefits of V2V safety applications while simplifying the deployment of these systems significantly as it does not require the robust infrastructure of the complete NHSTA proposed system currently under test.