Which type of incidents involves fatalities, injuries, or hit-and-run cases?

The most accurate classification for incidents that involve fatalities, injuries, or hit-and-run cases is Major Traffic Crashes. This category specifically denotes serious traffic-related events where the consequences are significant. Major Traffic Crashes are characterized by their severity, primarily focusing on incidents where individuals sustain serious injuries or lose their lives as a result of the crash.

This classification helps in prioritizing responses from law enforcement and emergency services due to the life-threatening nature of these occurrences. It is essential to manage these incidents with a more comprehensive investigation and response strategy to address the serious implications involved.

While the other options may each refer to different aspects of traffic events, they do not fully encompass the severity indicated in the question. For instance, Traffic incidents can refer to a wide range of occurrences that may not necessarily involve serious injuries or fatalities. Minor Traffic Incidents typically involve less severe situations that do not result in serious harm. Casualty-related traffic events could imply incidents with victims, but the term might not specifically highlight the gravity of fatalities and serious injuries that Major Traffic Crashes explicitly denote. Therefore, the focus on severity and the inclusion of hit-and-run scenarios solidly place Major Traffic Crashes as the appropriate categorization for the described incidents.