Abstract A modal shift away from the private car onto low-carbon transport modes is an essential part of decarbonising the transport sector. The dynamics of modal shifts are, however, not yet well understood. In particular the interrelations between structural and individual dynamics require further investigation. Furthermore, a better understanding is needed of how new transport modes become integrated into existing mobility practices. In this article, we address these questions in a qualitative study of modal shifts in (sub)urban commuting in three major Swiss cities. We analysed the interview data by means of a qualitative content analysis informed by practice theories. We found that modal shifts can arise i) from dynamics related to the conditions of use of different transport modes, ii) the coordination of everyday mobility with other people, iii) the coordination of resources between different daily practices, and iv) from dynamics related to the intrinsic motivation of everyday mobility. We found that these different dynamics are intertwined and that to understand how modal shifts arise, they must be analysed conjointly, rather than in isolation. And we identified three patterns in how modal shifts play out, and which describe different ways in which the new transport mode becomes integrated into everyday mobility practices. The first pattern describes modal shifts which require no adaptation of existing commuting practices. The second pattern describes modal shifts after which a new everyday mobility routine must be built. And the third pattern describes modal shifts that coincide with a lifestyle change. We conclude by discussing the implications of our findings for decarbonising everyday mobility.

中文翻译：

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（郊区）城市通勤模式转变的动态：基于实践理论的实证分析

摘要 从私家车向低碳交通方式的转变是交通部门脱碳的重要组成部分。然而，模态转变的动力学还没有得到很好的理解。特别是结构动力学和个体动力学之间的相互关系需要进一步研究。此外，需要更好地了解新的交通方式如何融入现有的交通实践。在本文中，我们通过对瑞士三个主要城市（郊区）城市通勤模式转变的定性研究来解决这些问题。我们通过基于实践理论的定性内容分析来分析访谈数据。我们发现，交通方式的转变可能源于 i) 与不同交通方式的使用条件相关的动态，ii) 与其他人日常交通的协调，iii) 不同日常实践之间的资源协调，以及 iv) 与日常出行的内在动机相关的动态。我们发现这些不同的动态相互交织，要了解模态转变是如何产生的，必须联合分析，而不是孤立地分析。我们确定了模式转变如何发挥作用的三种模式，它们描述了新交通模式融入日常出行实践的不同方式。第一种模式描述了不需要适应现有通勤实践的模式转变。第二种模式描述了模式转变，之后必须建立新的日常出行程序。第三种模式描述了与生活方式改变相吻合的模式转变。