Using a route choice experiment with embedded travel time variability, this study empirically estimates car commuters' risk attitudes and taste preferences within a nonlinear mixed logit model. In addition to the identified overall risk‐taking behaviour, we find that risk attitudes covary with some sociodemographic characteristics, that is, older commuters are more risk‐taking than young ones and higher‐income commuters are less risk‐taking than low‐income ones. The implications of accounting for systematic risk attitude heterogeneity for valuing travellers' willingness to pay for travel time improvement are also discussed. [ABSTRACT FROM AUTHOR]

中文翻译：

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关于风险承担和风险溢价的社会经济差异的实验证据*

本研究使用带有嵌入式旅行时间可变性的路线选择实验，在非线性混合 logit 模型中凭经验估计汽车通勤者的风险态度和口味偏好。除了确定的整体冒险行为，我们发现风险态度与一些社会人口学特征相关，即年长通勤者比年轻通勤者更冒险，高收入通勤者比低收入通勤者承担风险小. 还讨论了考虑系统风险态度异质性对评估旅行者为改善旅行时间支付意愿的影响。[作者摘要]