This paper studies the impact of speed limits on local air pollution using a series of date-specific speed limit reductions in Oslo over the 2004–2011 period. We find that lowering the speed limit from 80 to 60 km/h reduces travel speed by 5.8 km/h. However, we find no evidence of reduced air pollution as measured next to the treated roads. Our estimates suggest an annual time loss of the speed limit reductions of 66 USD per affected vehicle. Our findings imply that policy makers need to consider other actions than speed limit reductions to improve local air quality.

中文翻译：

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快速发展还是绿色发展？挪威环境限速的证据

本文通过使用一系列特定日期的2004-2011年奥斯陆限速降低来研究限速对当地空气污染的影响。我们发现将速度限制从80 km / h降低到5.8 km / h。然而，我们发现没有证据表明在经过处理的道路旁可以减少空气污染。我们的估算表明，每辆受影响的车辆每年限速降低的时间损失为66美元。我们的发现表明，决策者需要考虑降低速度限制以外的其他措施来改善当地空气质量。