The rapid expansion of new metro systems in the last two decades shows a globally growing interest in urban rail transit infrastructure. Every time a new metro line is opened, it has the potential to change the existing modal split, which is usually dominated by private (car or motorcycle) transport users. For each new or expanding metro system, a feasibility study is conducted, which focusses mainly on existing mobility issues, travel demand, new infrastructure proposed, and environmental and financial aspects of a new metro project. In these documents, specific methodologies are applied, using local parameters and suitable software, for demand forecasting purposes. However, not much attention is usually dedicated to potential users, their modal choice characteristics, willingness to shift to metro and conditions under which such a shift would be encouraging. Therefore, it is often unclear what the actual public perception of a new service is and their interest in using it in the future. As a consequence of various shortcomings in feasibility studies, the actual demand for metro services is often much lower than originally predicted. Hence, a survey targeting a group of potential metro users located close to a planned metro line was designed to investigate people’s willingness to shift to metro and include soft factors that could facilitate such a change. Next, a case study of the Red Line whose final metro stop is at Salaya, Thailand, was selected, and a sample of 667 respondents, both staff and students based at a nearby university campus, was investigated. Results revealed that 90% of the sample is willing to shift to metro (easy and medium shifters) for a future 20-km trip between Salaya and Bangkok, while only 10% remains sceptic (difficult shifters). Moreover, there are some differences in shifters’ priorities, where easy shifters see factors such as reliable timetable, good mode connectivity and seamless station–campus connection as significantly more important than medium or difficult shifters do. Also, there is a significant association between a mode type currently used for Salaya and Salaya–Bangkok commutes, where private transport users (51% of staff and 43% of students) have already shifted to public transport. Based on the outcomes of the study, recommendations are addressed to stakeholders involved in the Red Line, as well as in other new metro projects in Thailand and internationally, and to those who aim to better understand the needs of potential customers in order to facilitate their shift to metro as a preferred mode of transport in the future.

中文翻译：

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通勤者转乘地铁的意愿：以泰国萨拉雅为例

在过去的二十年中，新地铁系统的迅速发展表明，全球对城市轨道交通基础设施的兴趣日益增长。每当新的地铁线开通时，它就有可能改变现有的方式划分，通常由私人（汽车或摩托车）运输用户主导。对于每个新的或正在扩展的地铁系统，都会进行可行性研究，该研究主要集中在现有的出行问题，出行需求，拟议的新基础设施以及新地铁项目的环境和财务方面。在这些文档中，使用特定参数方法（使用本地参数和合适的软件）来进行需求预测。但是，通常不会将太多的精力专门用于潜在用户，他们的模式选择特征，转移到地铁的意愿以及这种转移的条件将令人鼓舞。因此，通常不清楚公众对新服务的实际看法是什么，以及他们将来是否会使用新服务。由于可行性研究存在各种缺陷，对地铁服务的实际需求通常比最初预计的要低得多。因此，旨在针对靠近计划中的地铁线路的一组潜在地铁用户的调查旨在调查人们的转向地铁的意愿，并包括可以促进这种变化的软因素。接下来，选择了红线的案例研究，该红线的最终地铁站位于泰国的萨拉亚（Salaya），并调查了来自附近大学校园的667名受访者，包括工作人员和学生。结果表明，样本中的90％愿意在未来的Salaya和Bangkok之间行驶20公里的过程中转向地铁（轻便和中档），而只有10％的人持怀疑态度（难于选择）。此外，换档者的优先级也有一些差异，易换档者将可靠时间表，良好模式连接以及无缝的站-校区连接等因素视为比中档或困难换档器重要得多的因素。另外，当前用于Salaya和Salaya–Bangkok通勤的交通方式类型之间存在显着关联，那里的私人交通用户（员工的51％和学生的43％）已经转向公共交通。根据研究结果，向红线以及泰国和国际上其他新地铁项目的利益相关者提出建议，