What is the primary purpose of the matrix that determines possible contributing factors?

The primary purpose of the matrix that determines possible contributing factors is to identify contributing factors during different crash phases. This matrix serves as a structured framework for analyzing various elements that can lead to a crash, categorized by the multiple stages of an incident—such as pre-crash, crash, and post-crash phases. By understanding how different factors interact within these phases, safety professionals can pinpoint specific issues that contribute to roadway incidents. This identification can then inform targeted interventions and strategies to enhance road safety and reduce the likelihood of future crashes. Evaluating various crash phases allows for a comprehensive assessment of situational variables that play a critical role in contributing to collisions.