This study investigates the effects of driving on air quality and road safety by exploiting exogenous variation in traffic flows associated with the Swiss franc's appreciation. It shows that the higher mobility along the border increased the nitrogen oxides concentration during peak hours on working days and the risk of car accidents during the late morning on nonworking days. The elasticity of both variables of interest with respect to the number of cars turns out to be larger than one. This suggests the need for programs that treat traffic congestion, air quality, and road safety jointly and has implications for optimal road use pricing.

中文翻译：

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驾驶的环境成本和事故外部性：来自瑞士法郎升值的证据

本研究通过利用与瑞士法郎升值相关的交通流量的外生变化来调查驾驶对空气质量和道路安全的影响。结果表明，沿边界较高的流动性增加了工作日高峰时段的氮氧化物浓度和非工作日上午晚些时候发生车祸的风险。两个感兴趣的变量相对于汽车数量的弹性结果证明都大于 1。这表明需要共同处理交通拥堵、空气质量和道路安全的计划，并对最佳道路使用定价产生影响。