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V2V communications uses on-board dedicated short-range radio communication (DSRC) devices to broadcast messages about a vehicle's speed, heading, brake status, and other information to other vehicles and receive the same information from the messages, with extended range and "line-of-sight" capabilities. V2V's enhanced detection distance and ability to "see" around corners or "through" other vehicles helps V2V-equipped vehicles uniquely perceive some threats and warn their drivers accordingly. V2V technology can also be fused with vehicle-resident technologies to potentially provide greater benefits than either approach alone. V2V can augment vehicle-resident systems by acting as a complete system, extending the ability of the overall safety system to address other crash scenarios not covered by V2V communications, such as lane and road departure. Additionally, V2V communication is currently perceived to become a foundational aspect of vehicle automation.