Selecting exposure measures in crash rate prediction for two-lane highway segments.

  title={Selecting exposure measures in crash rate prediction for two-lane highway segments.},
  author={X. Victor Qin and John N. Ivan and Nalini Ravishanker},
  journal={Accident; analysis and prevention},
  volume={36 2},
A critical part of any risk assessment is identifying how to represent exposure to the risk involved. Recent research shows that the relationship between crash count and traffic volume is non-linear; consequently, a simple crash rate computed as the ratio of crash count to volume is not proper for comparing the safety of sites with different traffic volumes. To solve this problem, we describe a new approach for relating traffic volume and crash incidence. Specifically, we disaggregate crashes… CONTINUE READING
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