• July 1st, 2018

The overall objectives of this research were to identify and explore alternative safety data sources and analysis perspectives, and demonstrate the potential utility of these alternative approaches in increasing understanding of precipitating events and predisposing factors for crashes occurring on horizontal curves and at unsignalized intersections along rural two-lane roads. The project team executed the research through a series of nine tasks occurring across two project phases. The team used three different work plans and a white paper at selected points in the project to identify alternative research directions and select priorities. Following a review of published literature that they used to identify and define relevant terminology and assess the state of knowledge related to models of crash causation, the project team carried out research activities in five main areas:

  • Conceptual crash models
  • Safety data availability and quality assessments
  • Precipitating events and causal type groupings
  • Enhanced datasets of predisposing factors
  • Estimating exposure