When did major transportation companies first widely adopt sentiment analysis technology to improve passenger experiences?

In the fast-evolving transportation industry, technology adoption can make or break companies. This trivia question explores how sentiment analysis technology has been implemented by transportation providers to revolutionize customer experiences. Understanding the timeline of these innovations provides insight into how passenger feedback has shaped modern transportation services and operational decisions.

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2015-2017, following the rise of social media customer service interactions
2008-2010, during the global economic recession to improve efficiency
2019-2020, as part of pandemic-related service adjustments
2004-2006, pioneered by airline loyalty programs