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Public Discourse Toward Older Drivers in Japan Using Social Media Data From 2010 to 2022: Longitudinal Analysis.
Akito Nakanishi1, Masao Ichikawa2, Yukie Sano3
1Graduate School of Science and Technology, University of Tsukuba, Ibaraki, Japan.
JMIR Infodemiology
|June 16, 2025
Summary
Public discourse on older drivers on Japanese Twitter shows increasing negative sentiment and perceived risk, despite declining crash rates. This highlights a need for balanced understanding and policy review regarding older adult mobility.
Area of Science:
- Social Science
- Gerontology
- Transportation Studies
Background:
- Global population aging intensifies concerns regarding older drivers.
- Japanese surveys show persistent negative public sentiment towards older drivers, contrasting with their actual safety record.
- Social media discourse significantly shapes public perceptions of older drivers.
Purpose of the Study:
- To quantify long-term public discourse on older drivers in Japan using Twitter (X) data.
- To analyze sentiments, topics, and their correlations within tweets about older drivers.
- To understand the evolution of public perception versus actual driving safety data.
Main Methods:
- Collected 2,625,807 Japanese tweets related to older drivers from 2010-2022.
- Conducted sentiment analysis using the Linguistic Inquiry and Word Count dictionary.
- Employed non-negative matrix factorization for topic modeling and correlation analyses with crash rates.
Main Results:
- Tweet volume increased over time, with peaks correlating to major traffic crashes.
- Predominantly negative sentiments (62.42%), anger (17.38%), anxiety (18.59%), and risk (58.15%) were identified.
- The 'crash events' topic correlated strongly with negative emotion (r=0.76) and risk (r=0.72).
Conclusions:
- 13-year Twitter data analysis reveals a paradox: increasing negative sentiment and perceived risk despite declining older driver crash rates.
- Findings suggest a need to re-evaluate licensing policies and promote advanced technologies like self-driving systems.
- A more balanced public understanding is crucial to mitigate prejudice and support safe mobility for older adults.
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