If an incident lasts ninety (90) minutes, which classification does it fall under according to MUTCD Chapter 6I?

The classification of traffic incidents according to the Manual on Uniform Traffic Control Devices (MUTCD) Chapter 6I revolves around the duration and impact of the incident. An incident that lasts ninety minutes is categorized as an intermediate incident. This is because intermediate incidents typically last longer than minor incidents but do not reach the severity or extended duration associated with major or severe incidents.

Minor incidents are characterized by their short duration, often clearing within a shorter timeframe, while major incidents extend significantly beyond ninety minutes, resulting in more substantial impacts on traffic flow. Severe incidents represent the most serious types of traffic disruptions, often involving extended times and significant resource allocation. Understanding these classifications helps emergency responders effectively manage and communicate the nature and expected impacts of traffic incidents.