Which of the following measures relates directly to the quality of life impact from crashes?

The measure that directly relates to the quality of life impact from crashes is the quality of life crash unit cost. This measure is specifically designed to assess the effects of traffic collisions on individuals' well-being beyond just economic costs. It encompasses factors such as physical injuries, psychological trauma, loss of life, and the broader social implications of crashes on communities, thus providing a more holistic understanding of how accidents impact overall quality of life.

The focus on quality of life allows communities and policymakers to consider not just the financial implications of traffic incidents, but the emotional and social consequences experienced by victims and their families. This understanding is crucial for developing effective safety strategies and interventions that aim to reduce both the frequency and severity of crashes, ultimately enhancing the well-being of the community.

Other measures mentioned may consider various aspects of crashes, but they do not specifically capture the full spectrum of quality of life impacts in the same way that the quality of life crash unit cost does.