An optimal allocation of societal resources for life saving activities is guaranteed by deriving acceptance criteria for risk to life from efficiency considerations based on the marginal life saving costs principle. The Life Quality Index (LQI) can be used to quantify the societal willingness to pay for a marginal increase in life safety. The LQI net benefit criterion is the state-of-the-art method to establish quantitative risk acceptance criteria, being applicable to all areas where resources for life saving activities have to be allocated. Yet for the