MMUCC Training

C6. First Harmful Event


The first injury or damage-producing event that characterizes the crash type.

Collision with Person, Motor Vehicle, or Non-Fixed Object
Collision with Fixed Object
  • Impact Attenuator / Crash Cushion
  • Bridge Overhead Structure
  • Bridge Pier or Support
  • Bridge Rail
  • Cable Barrier
  • Culvert
  • Curb
  • Ditch
  • Embankment
  • Guardrail Face
  • Guardrail End
  • Concrete Traffic Barrier
  • Other Traffic Barrier
  • Tree (standing)
  • Utility Pole / Light Support
  • Traffic Sign Support
  • Traffic Signal Support
  • Other Post, Pole, or Support
  • Fence
  • Mailbox
  • Other Fixed Object (wall, building, tunnel, etc.)
  • Unknown

Needed for uniformity in reported motor vehicle crash statistics, understanding crash causation, and identifying possible crash avoidance countermeasures. For analytic purposes it may be desirable to collect and use information about subsequent events, some of which may be harmful. (See Sequence of Events V20)