The overall effectiveness of the roadway safety management process relies on a robust method for identifying and ranking sites with major potential for safety improvements. In Brazil, guidelines for hotspot identification are usually based only on crash frequency and Crash Rate as safety performance measures. This study presents a comparative analysis of safety performance measures, considering its limitations of applicability in a sample of signalized intersections from Fortaleza city, Brazil. The performance of each measure to rank the sample intersection was obtained through the rank difference between each safety performance measure and the Excess Expected Average Crash Frequency with EB Adjustment (EEB). In addition, it has taken a temporal analysis based on the consistency of safety performance measures during subsequent time periods. The results have suggested a reasonable matching between the most comprehensive safety performance measure (EEB) and very simple safety performance measures such as crash frequency and Crash Rate. It is recommended to investigate the consistency of the results for longer observation period as well as for a different jurisdiction in Brazil.
Road deaths phenomenon suggests the development of studies that consider the complex causal relationship between the factors that influence it at the compatible level with the definition of road safety policies. This paper analyzes the influence of 48 road safety performance indicators on the mortality rate of 175 World Health Organization Member States in 2016. Structural equation models were proposed to evaluate the proposition and use of latent variables that represent five major road safety policy areas and the influence on mortality rates. The proposed model structure indicated that management has a strategic role in public policies, having an indirect influence on reducing the mortality rate through safe vehicles, user safety, and safe roads and mobility. The results indicated that policies aimed at encouraging users’ safe behavior were the ones that had the greatest influence in reducing road deaths followed by policies in safer vehicles, road safety management, safer roads and mobility, and post-crash response.
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