Statistical estimation of fatal and serious injuries saved by iRAP protocols in 74 countries

PLoS One. 2024 Apr 16;19(4):e0301993. doi: 10.1371/journal.pone.0301993. eCollection 2024.

Abstract

Objective: Road traffic crashes cause 1.19 million deaths and millions more injuries annually. The persistently high burden has drawn attention from national and international stakeholders worldwide. Unsafe road infrastructure is one of the major risk factors for traffic safety, particularly in low- and middle-income countries.

Methods: Aiming to eliminate high-risk roads in all countries, the International Road Assessment Programme (iRAP) developed a robust and evidence-based approach to support country transportation agencies.

Results: Thus far, the iRAP protocols have been used to collect 1.8 million kilometers of Crash Risk Mapping and 1.5 million kilometers of Star Rating and FSI estimations in 128 countries. Deploying an observational before-and-after (or pre-post) study design, this report estimated the fatal and series injuries (FSI) saved through use of the iRAP protocols. The study is based on 441,753 kilometers of assessed roads from 1,039 projects in 74 countries. Our results show that the implementation of iRAP's proposed countermeasures saves about 159,936 FSI annually. Throughout the lifetime of the implemented countermeasures, a total of 3.2 million FSI could be saved.

Conclusion: While quantifying the success of the iRAP protocols, our results suggest an opportunity to save many millions more lives on the roads through expanding iRAP implementation to more regions and countries.

MeSH terms

  • Accidents, Traffic* / prevention & control
  • Humans
  • Interleukin 1 Receptor Antagonist Protein
  • Observational Studies as Topic
  • Program Evaluation
  • Risk Factors
  • Transportation
  • Wounds and Injuries* / epidemiology
  • Wounds and Injuries* / prevention & control

Substances

  • Interleukin 1 Receptor Antagonist Protein

Grants and funding

The International Road Assessment Programme provided financial support for this study. James Bradford, one of the authors, is an employee of iRAP and contributed to the preparation of the manuscript. The funders had no other role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.