“…However, recent work suggests some of these criteria, particularly in regard to motor vehicle crashes, add little to the process of correctly choosing which patients should become a ''trauma code'' (evidenced by death in the ED, admission directly to the operating room or ICU) and which may safely be seen in the normal routine of the ED. 2 What we want are readily available, on-scene data points that improve both the sensitivity and specificity of trauma team activation for victims of motor vehicle crashes who do not otherwise meet physiologic criteria. The work reported by Newgard et al 4 in this issue of Annals is a first step toward improving our understanding of the effect of mechanism in determining injury severity and upgrading our ability to accurately identify those apparently ''stable'' motor vehicle occupants who need the resources of trauma team activation.…”