The Haddon Matrix is best described as which use?

• A. Scheduling maintenance windows
• B. Measuring crash frequency
• C. Identifying potential causal factors at various points of the crash event
• D. Estimating travel time

Answer: (C)

The main idea here is that the Haddon Matrix is a planning tool used to map out factors that can cause or influence a crash across three time periods (before, during, after) and three domains (human, vehicle, environment). This structure helps you identify where interventions can reduce risk or injury by looking at potential causal factors at each stage of the crash and in each domain. That's why identifying potential causal factors at various points of the crash event is the best description of its use. For example, before the crash you might look at driver behavior or road design; during the crash you examine vehicle safety features and occupant protection; after the crash you consider emergency response and post-crash care. It isn’t about scheduling maintenance windows, measuring crash frequency, or estimating travel time.