Major incidents are generally classified based on what key factor?

Major incidents are primarily classified based on the duration of the incident. This classification helps responders and agencies understand the impact and resource needs of a particular event. For example, an incident that lasts several hours may require more significant resources and long-term planning than a brief incident, which can be cleared quickly.

Duration encompasses the complexity of the incident, the level of disruption to normal traffic flow, and the extent of response required. Prolonged incidents often indicate a need for more comprehensive management strategies, including traffic control, rehabilitation of the scene, and coordination among multiple agencies. Understanding the duration assists responders in allocating appropriate resources and effectively managing the incident to minimize its effects on public safety and traffic flow.