Road safety science and practice: Portrait of an unwanted divorce

Alonso, Francisco · 2012 · Crossref

DOI: 10.1007/s12615-012-9051-2

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Summary

This editorial by Francisco Alonso addresses the critical disconnect between road safety science and practice, characterizing it as an "unwanted divorce" that hinders progress in the field. The author argues that while road safety work is motivated by the goal of saving lives and improving quality of life, advancement is severely slowed by the lack of integration between theoretical research and practical application. Specifically, Alonso notes that practical interventions often exceed scientific production in volume but frequently fail to adhere to scientific principles, and in some cases, actively violate them. This gap is particularly detrimental during economic crises, where reduced resources make the efficiency and efficacy of interventions paramount. The core problem identified is the pervasive "culture of non-evaluation." Although stakeholders acknowledge the necessity of evaluating measures and countermeasures, rigorous assessment is rarely conducted in practice. Alonso posits that practice should feed data back into science through rigorous evaluation, which would unlock unprecedented levels of knowledge and improve the utility of interventions. However, this feedback loop is broken by two primary enemies: scientists who maintain rigid boundaries to protect their territory rather than engaging with practitioners, and professionals, executives, and politicians who fear that rigorous evaluation might invalidate their work or expose ineffective practices. Additionally, the administrative fragmentation of road safety responsibilities, such as multiple highway administrations within a single state, leads to knowledge silos where insights generated by one group remain inaccessible to others. Alonso critiques the current state of evaluation, noting that many implemented actions have negligible impact on accident rates, whereas reallocating resources toward rigorous evaluation could significantly maximize utility. He warns against simplistic evaluation methods, such as relying solely on accident rates, which are flawed due to issues like underreporting and the failure to isolate the effects of specific measures. Instead, he advocates for the adoption of robust methodological concepts, including confounding factors, regression to the mean, and empirical Bayesian methods. The significance of this work lies in its call for systemic reform to bridge the science-practice divide. Alonso proposes several concrete steps: facilitating publication access for practitioners, improving access to published scientific information, training more researchers in applied fields, and standardizing evaluation procedures. He emphasizes that avoiding evaluation due to fears of poor quality or resource constraints is a self-perpetuating excuse driven by a fear of truth. Ultimately, the editorial argues that integrating rigorous, scientifically sound evaluation into road safety practice is essential for improving outcomes for professionals, scientists, and society at large.

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• regulatory evaluation

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• Applied Guidance: countermeasure evaluation