What are the 3 classes of Traffic Incidents?

• A. Major, Intermediate, Minor
• B. Primary, Secondary, Tertiary
• C. Critical, Moderate, Light
• D. Severe, Moderate, Minor

Answer: (A)

Traffic incidents are evaluated by how big and how complex they are, which guides how you respond and manage the scene. The three classes you’ll use are major, intermediate, and minor.

A major incident involves a large impact on traffic and safety: long duration, significant hazards, and the need for a large, multi-agency response with multiple units and extended lane closures. An intermediate incident is more substantial than a simple crash but not as sprawling as a major one—there are several responding units, some lane closures, and notable hazards that require organized on-scene management. A minor incident is quick and straightforward, with minimal hazards, few resources, and little or no lane closure, allowing for a simple, short-duration response.

This classification helps you tailor traffic control, rescue priorities, and resources, ensuring safety for responders and the public. Other labelings like primary/secondary/tertiary or severe/moderate/minor aren’t the standard three-class system used in this context, so they don’t align with how traffic incidents are categorized here.