In high-risk auto crash criteria, which intrusion distance qualifies as a high-risk indicator?

• A. Intrusion including roof: >12 inches occupant site; >18 inches any site
• B. Intrusion >6 inches occupant site; >12 inches any site
• C. Intrusion >24 inches occupant site; >30 inches any site
• D. No intrusion qualifies

Answer: (D)

The key concept is that intrusion into the passenger compartment flags a high-risk injury in auto crashes. The standard criteria use two thresholds: intrusion into the occupant site greater than 12 inches, or intrusion into any site greater than 18 inches. When either of these is met, it indicates a significant mechanism of injury and prompts higher-priority trauma care.

So the best fit is the criterion that describes intrusion exceeding 12 inches in the occupant area or more than 18 inches anywhere in the vehicle. The other numbers don’t align with these recognized thresholds, and saying no intrusion qualifies would miss a known high-risk indicator.