Abbasi Mohammadhossein, Mamdoohi Amir Reza, Ciari Francesco, Sierpiński Grzegorz
Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, Montreal, QC, H3T 1J4, Canada.
Sci Rep. 2024 Oct 7;14(1):23276. doi: 10.1038/s41598-024-74024-0.
The integration of shared and autonomous mobility has led to the emergence of shared autonomous vehicles with ride-sharing services (SAVWRS), which have the potential to significantly reduce private car usage and promote sustainable transportation. Despite numerous studies on this topic, there is still no research examining the impact of all dimensions of perceived risk theory on usage intention. Therefore, we aim to investigate these relationships and gain deeper insights by examining the mediating effect of trust and the moderating effect of generation (Millennials vs. Baby Boomers) to address potential disparities across generations. To gather insights, we design an online survey that was completed by a random sample of 723 individuals in 2021. The estimation results of the structural equation model reveal that all perceived risk dimensions (social, performance, time, physical, security, and financial risks, in descending order) are negatively related to consumers' intention. Additionally, trust fully mediates the relationships between performance, physical, financial, and security risks and usage intention, whereas it partially mediates the relationships between social and time risks and the intention to use. Furthermore, moderation analysis revealed that Millennials are less concerned about most dimensions of perceived risk theory, except for social and time risks. In conclusion, our study contributes to a deeper understanding of the complex relationships between perceived risk dimensions, trust, and usage intention in SAVWRS. Our findings suggest that policymakers and industry stakeholders should consider strategies to address these concerns to promote widespread acceptance of SAVWRS.
共享出行与自动驾驶的融合催生了具备拼车服务功能的共享自动驾驶汽车（SAVWRS），这类汽车有潜力大幅减少私家车的使用，并推动可持续交通的发展。尽管针对这一主题已有大量研究，但仍未有研究考察感知风险理论的各个维度对使用意愿的影响。因此，我们旨在通过研究信任的中介作用以及代际（千禧一代与婴儿潮一代）的调节作用来探讨这些关系，以深入了解不同代际间可能存在的差异。为了获取相关见解，我们设计了一项在线调查，该调查于2021年由723名个体的随机样本完成。结构方程模型的估计结果显示，所有感知风险维度（按降序排列依次为社会风险、性能风险、时间风险、身体风险、安全风险和财务风险）均与消费者的使用意愿呈负相关。此外，信任在性能风险、身体风险、财务风险和安全风险与使用意愿之间的关系中起完全中介作用，而在社会风险和时间风险与使用意愿之间的关系中起部分中介作用。此外，调节分析表明，除社会风险和时间风险外，千禧一代对感知风险理论的大多数维度的担忧程度较低。总之，我们的研究有助于更深入地理解SAVWRS中感知风险维度、信任和使用意愿之间的复杂关系。我们的研究结果表明，政策制定者和行业利益相关者应考虑采取策略来解决这些问题，以促进SAVWRS的广泛接受。
