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The overall goal of the Federal Highway Administration’s (FHWA’s) Roadway Departure (RwD) Program is to improve the safety of the Nation’s highways through the reduction of RwD crashes. RwDs continue to account for more than half of U.S. roadway fatalities annually and nearly 40 percent of serious injuries, making such crashes a significant safety concern.

Connected vehicles and automated vehicles are complementary technologies with the potential to improve safety. The purpose of this research is to explore the role of highway infrastructure in enabling these technologies to reduce the number and severity of RwD crashes. This report identifies initiatives for FHWA and its State partners to consider and investigates how infrastructure may need to be adjusted to accommodate these technologies. This report includes a literature review on RwD crashes and conventional countermeasures. A series of Web meetings with interested stakeholders examined the gap between the state of the art of these technologies and their ultimate effective deployments. This document is intended for traffic engineers, highway designers and planners, and other transportation professionals to acquaint themselves with potential infrastructure changes that could accommodate these emerging vehicle technologies.

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