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Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation

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Published on: February 1, 2020

Road safety risk evaluation and target setting using data envelopment analysis and its extensions.

Yongjun Shen¹, Elke Hermans, Tom Brijs

¹Transportation Research Institute (IMOB), Hasselt University, Wetenschapspark 5 bus 6, 3590 Diepenbeek, Belgium. yongjun.shen@uhasselt.be

Accident; Analysis and Prevention

|June 6, 2012

Summary

Data envelopment analysis (DEA) offers a robust method for comparing road safety performance across countries. This approach provides a clearer picture of road safety efficiency and identifies actionable targets for improvement.

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Area of Science:

Road Safety
Transportation Science
Performance Measurement

Background:

International road safety comparisons are crucial for identifying best practices and setting policy targets.
Traditional risk indicators (fatalities per capita/vehicle/distance) lack consistency, leading to divergent country rankings.
A unified approach is needed to accurately assess and benchmark national road safety performance.

Purpose of the Study:

To apply Data Envelopment Analysis (DEA) for a comprehensive evaluation of road safety performance across European Union (EU) countries.
To assess if road safety outcomes align with expected levels based on exposure data.
To identify best-performing countries and provide specific benchmarks for underperforming nations.

Main Methods:

Utilized the DEA-based road safety (DEA-RS) model with exposure measures as inputs and fatalities as outputs.
Employed cross-efficiency methods for robust country ranking.
Applied categorical DEA and clustering analysis to identify country-specific performance and benchmarks.

Main Results:

Calculated road safety efficiency scores for 27 EU countries using the DEA-RS model.
Ranked countries based on cross-efficiency scores, highlighting performance variations.
Identified best-performing and underperforming countries within clusters, providing specific learning targets.

Conclusions:

DEA provides a consistent and comprehensive method for evaluating and comparing national road safety performance.
The study offers practical targets for underperforming countries, facilitating evidence-based policy development.
Benchmarking through DEA enables targeted interventions to improve overall road safety across the EU.