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High level Programmed Impact Cautioning (AACN)

The replacement for Automatic Collision Notification is Advanced Automatic Collision Notification (AACN) (ACN). The Centers for Disease Control and the CDC Foundation have teamed up with OnStar and the GM Foundation to create protocols that will assist emergency medical personnel in determining if a driver needs treatment at a trauma center following a car accident.


Through this collaboration, CDC carried out a vehicle telematics campaign to create evidence-based guidelines for the use of automotive telemetry data by the emergency medical community. These data will aid in lowering the number of deaths and injuries among victims of automobile crashes by allowing rescuers to identify, diagnose, and treat injuries more rapidly. A panel of specialists in public safety, automotive safety, trauma surgery, emergency medicine, and other fields was assembled by the CDC as part of this program.

The panel discussed how real-time crash data from the advanced automatic crash notification (AACN) vehicle telematics system and similar systems can be used to determine whether injured patients require trauma center treatment. Vehicle telemetry systems, such as AACN, use a collection of sensors to send crash data to an advisor if a vehicle is involved in a moderate or severe front, rear, or side-impact crash.

The data may contain details regarding the intensity of the incident, the direction of the impact, air bag deployment, numerous impacts, and rollovers, depending on the type of system (if equipped with appropriate sensors). In order to swiftly select the ideal combination of emergency people, equipment, and medical facilities, advisors can send this information to emergency dispatchers.

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