What is the role of the Cost Effectiveness Index in evaluating road safety treatments?

The Cost Effectiveness Index plays a crucial role in evaluating road safety treatments by allowing practitioners to compare the costs associated with implementing different safety measures against their effectiveness in reducing accidents or enhancing safety. This assessment helps prioritize safety interventions by determining which options offer the best value for money—essentially identifying those that achieve the greatest positive impact on road safety per unit of expenditure. By focusing on both cost and effectiveness, stakeholders can make informed decisions about where to allocate limited resources, ensuring that funds are used efficiently to maximize safety outcomes. This analytical approach supports the strategic planning of road safety initiatives, aiding in the selection of interventions that yield the highest benefits relative to their costs.