What aspect should safety supervisors focus on during witness interviews?

Focusing on witness credibility during interviews is crucial for safety supervisors as it helps in assessing the reliability and trustworthiness of the information provided. When gathering testimonies, determining how credible a witness is can significantly affect the outcome of an investigation. Credible witnesses are more likely to provide accurate and unbiased information, while those lacking credibility might present opinions or narratives that could mislead the investigation.

Safety supervisors use various techniques to evaluate a witness's credibility, such as observing the consistency of their statements, checking their background or potential biases, and considering their relationship to the incident. This process helps ensure that the findings of the investigation are based on factual and trustworthy information.

Other aspects, such as collecting witness credentials, documenting injuries, or reviewing driver statements, are also important in the overall investigation; however, these activities do not directly address the reliability of the witness itself. Establishing credibility is foundational, as it underpins the integrity of the entire witness interview process and contributes to making informed safety decisions.