Last December, France obtained approval from the European Commission to prohibit short-haul flights with alternatives by rail taking less than 2.5 hours, in a measure aimed at reducing CO2 emissions and combating climate change.
https://www.lifetechnology.com/blogs/life-technology-technology-news/what-effect-will-replacing-short-haul-flights-have-on-carbon-dioxide-emissions-and-international-connectivity
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