The simplified BATT (sBATT) score offers a practical trauma triage tool for use in motor vehicle collisions where monitoring equipment may be unavailable. Derived from the original BATT score and validated on over 70,000 UK patients, the sBATT shows excellent performance in predicting early death using only observable signs. Ideal for lay responders, trapped patients, and low-resource settings, this novel tool could help guide early trauma care and emergency dispatch.