ORIGINAL RESEARCH article

Front. Sustain. Cities

Sec. Innovation and Governance

Volume 7 - 2025 | doi: 10.3389/frsc.2025.1574300

Smart mobility innovations in regional transport services A systemic view of triggers, approaches and outcomes in Japan

Provisionally accepted
Gregory  TrencherGregory Trencher1,2*Toshihiro  HamanoToshihiro Hamano2Keisuke  ShimonoKeisuke Shimono3Jair  CampfensJair Campfens4Mert  DuyganMert Duygan4,5
  • 1Kyoto University, Kyoto, Japan
  • 2Graduate School of Global Environmental Studies, Kyoto University, Kyoto, Kyōto, Japan
  • 3Institute of Industrial Science, The University of Tokyo, Tokyo, Tôkyô, Japan
  • 4Institute of Architecture, School of Architecture, Civil and Environmental Engineering, Swiss Federal Institute of Technology Lausanne, Lausanne, Geneva, Switzerland
  • 5Interdisciplinary Center for Sustainable Development and Environment (CDE), Faculty of Science and Natural Sciences, University of Bern, Bern, Bern, Switzerland

The final, formatted version of the article will be published soon.

Introduction: Regional urban and rural areas outside major metropolitan centres face escalating mobility challenges driven by declining socio-economic vitality and demographic shifts like population decline and ageing. Smart mobility innovations – including Autonomous Vehicles (AV), Demand-Responsive Transport (DRT), ridesharing and Mobility-as-a-Service (MaaS) – have attracted attention as potential solutions. Yet scholarship on these innovations has focused on user acceptance or theoretical potential, offering limited empirical assessment of actual problem-solving effectiveness. It consequently remains unclear whether these smart mobility technologies can live up to expectations about their benefits, especially in regional settings facing declining socio-economic conditions. Objective and method: We examine the experiences of regional Japan, where declining ridership and revenue – triggered by population aging and shrinkage – are forcing the contraction of public transport services and threatening their financial sustainability. Drawing on evidence from questionnaires and interviews, we comparatively examine the challenges, approaches and outcomes of 67 smart mobility projects implemented in 65 cities, towns and villages across Japan. A key contribution lies in our application of a common, systemic perspective – grounded in systems mapping methods – to analyse transport challenges across larger and smaller municipalities.Results: Findings show that both larger and smaller municipalities are grappling with broadly the same challenges despite vastly differing geographical conditions. Our structural analysis indicates that challenges consist of root causes (driver shortages, declining revenue, poor convenience, downscaling of transport networks) and symptoms (poor access). In terms of effectiveness at tackling these challenges, the analysis reveals a mixed picture. On the one hand, projects reported substantial success in improving convenience, reducing accessibility barriers for users, and filling gaps in transport networks. On the other hand, we find less success at ameliorating other root-cause problems, notably driver shortages and low profitability. Discussion: Our empirics suggest that smart mobility innovations do not provide a panacea for all transport challenges, particularly when macro-level demographic conditions such as population ageing and decline pose a structural impediment to their effectiveness. Japan’s experiences in dealing with the impacts of population ageing and associated socio-economic decline on regional mobility carry high instructive value for other countries facing similar demographic changes.

Keywords: Smart mobility, Evaluation, Regional transport, innovation, regional governance emerging …mart mobility technologies includinglike…AV, ... [25]

Received: 10 Feb 2025; Accepted: 20 May 2025.

Copyright: © 2025 Trencher, Hamano, Shimono, Campfens and Duygan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Gregory Trencher, Kyoto University, Kyoto, Japan

Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.