Advancements in computational techniques used to simulate human impact injury response, coupled with those in computer hardware, bring the idea of detailed injury assessment closer to reality. Consequently, next - generation (G2) injury assessment processes are being explored to potentially augment or replace methods using dummy-based, empirically-derived, gross injury risk relationships. These processes use computational models that give more detailed injury response resulting from dummy-measured loading. This paper discusses the development of an initial version of such a next - generation injury assessment tool called SIMon:​ A Simulated Injury Monitor, as it is applied to the assessment of brain injury.