Abstract :
[en] Despite the central role of travel satisfaction in transport research, debates remain regarding the optimal instruments for its measurement, balancing conceptual depth with operational simplicity. This study delivers the first direct comparison of three established scales: the Satisfaction with Travel Scale (STS) and two concise measures, the Net Promoter Score (NPS) and Customer Satisfaction Score (CSAT), within a unified empirical framework. Drawing on a large-scale, post-pandemic survey of bus and train users in Flanders, Belgium, we systematically evaluate scale reliability, dimensionality, and explanatory power across 25 service quality indicators and socio-demographic controls. Findings reveal the STS operates as a single-factor construct in this context, questioning the necessity of its multidimensional framing. NPS and CSAT exhibit strong internal alignment and higher sensitivity to key service attributes, such as punctuality and reliability, with CSAT explaining the greatest variance in satisfaction outcomes. These results indicate that while STS remains valuable for capturing the cognitive and affective underlying nuances of travel, NPS and CSAT provide effective and lower-burden alternatives for routine satisfaction monitoring. This study offers new empirical evidence to guide the choice of satisfaction measures in transport research and policy evaluation.
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