Which aspect is NOT covered in the CR-100 regarding crash investigations?

The aspect of investigating witness credibility is not specifically covered in the CR-100 regarding crash investigations. This focus highlights the document's emphasis on procedural and operational guidelines rather than delving into the subjective analysis of witness testimonies.

In crash investigations, agencies often prioritize the factual and objective elements of accidents—such as managing minor accidents, ensuring thorough reporting and documentation, and maintaining accurate records of traffic signs and signals involved in the crash. These elements are crucial for establishing a clear, unbiased account of the incident, while the evaluation of witness credibility typically falls outside the scope of procedural training outlined in the CR-100. Therefore, while witness accounts can be important in real-life scenarios, the CR-100 focuses on more tangible aspects of gathering and reporting information during crash investigations.