Example Haddon Matrix

Vehicular Violence (Homicide/Suicide)

Factors

Host

Agent/Vehicle

Physical Environment

Social Environment

Pre-Event

·     Driver experience

·     Alcohol/drug impairment

·     Mental State

·     Pre-convictions

·     Fatigue

·     Speed

·     In vehicle safety devices

·     Ease of control

·     Obstructed view

·     Weather conditions

·     Roadway markers

·     Inadequate barriers

·     No vehicle zones

·     Obstructed view

·     Convictions less severe

·      Public tolerance of mental instability

·     Law not prohibiting at risk individuals to obtain access to vehicle

Event

·     Failure in wearing safety belt

·     Age

·     Sex

·     Bone density

·     Safety systems failed to engage

·     Vehicle size

·     Air bags deployment

·     Poor design in safety barriers

·     Police identification of intentionality

Post-Event

·     Preexisting condition

·     Social environment and situation

·     Poor design crush zone or other parts of vehicle

·     Emergency readiness to location

·     Judicial sentencing