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September 8, 2026SustainabilityOpen Access

Development of Composite Road Safety Risk Indices Through Multicriteria Weighting and Spatial Analysis

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Authors

GTGermán Vinicio Roblez TorresYGYasmany García-RamírezFDFabián Díaz

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Overview

Spatial modeling study reveals consistent cantonal road safety risk rankings across weighting schemes, indicating robust territorial prioritization for sustainable transportation planning.

Key Points

  • To develop a spatial decision-support framework using composite risk indices and multicriteria weighting to improve territorial road safety planning and intervention prioritization.
  • Analyzed official 2025 traffic crash records across cantons in Ecuador, aggregating demographic exposure, territorial exposure, crash counts, injuries, and fatalities into three distinct indices.
  • Applied Min–Max normalization and constructed composite indices for crash severity, spatial risk, and hotspot concentration using both theoretical and entropy-based weighting schemes.
  • Evaluated ranking stability and framework robustness through sensitivity analysis, 1,000-iteration Monte Carlo simulations, and Spearman rank correlation.
  • Theoretical and entropy-based weighting schemes showed near-perfect ranking agreement for crash severity (ρ = 0.993) and spatial risk (ρ = 0.993).
  • Hotspot concentration rankings maintained strong consistency across alternative weighting methods (ρ = 0.965), demonstrating the stability of territorial hazard prioritization.

Cite This Study

Torres et al. (2026) studied this question.

synapsesocial.com/papers/6aa0091858e84d0ff5b47aechttps://doi.org/10.3390/su18179179
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