The law came into force two years after lawmakers had voted to end routes where the same journey could be made by train in under two-and-a-half hours.
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France’s Citizens’ Convention on Climate, which was created by President Emmanuel Macron in 2019 and included 150 members of the public, had proposed scrapping plane journeys where train journeys of under four hours existed.
Comparing emissions per passenger per km travelled from different modes of transport