Which factor is NOT a reason for requiring a traffic collision report?

The necessity of a traffic collision report is influenced by several factors, including the severity of the incident and the potential implications for legal accountability and safety. Involvement of a pedestrian is indeed a critical situation often necessitating a report due to the heightened risk of injury or fatality. Therefore, it's not accurate to say that involvement of a pedestrian is a factor that does not require a traffic collision report.

In contrast, serious damage to the vehicle, death of an involved person, and hit-and-run incidents are all clear indications that a report is mandatory. Serious vehicle damage may suggest significant mechanical failure or indicate a severe incident that could affect public safety. The death of a person involved in the collision stands as one of the most serious outcomes, necessitating thorough investigation and documentation. Hit-and-run incidents further complicate the matter, as they involve parties that seek to evade responsibility, making documentation essential for legal proceedings.

The correct answer points to a situation where the necessity of a report is not inherently implied, thus making it less of a criterion compared to the other more critical factors listed.