Which of the following is NOT identified as critical data for road safety?

• A. Weather data
• B. Traffic volume
• C. Crash records
• D. Driver history

Answer: (A)

This item tests which data are considered essential for assessing road safety performance. In many road safety analyses, the core data types are exposure, outcomes, and risk indicators. Traffic volume provides exposure data—how much driving is happening, which is needed to normalize crash rates. Crash records supply the actual safety outcomes, showing where and when problems occur. Driver history offers insight into individual risk factors that can explain why crashes happen and whom to target for interventions. Weather data, while influential on driving conditions and useful for context or model adjustment, is treated as an environmental factor rather than a primary data pillar, so it isn’t identified as critical data in this framework.