"The city of Dunkirk in northern France launched a revamped bus system last year with a twist – it’s completely free. A new study shows that the programme is not only revitalising the city center but also helping the environment. (...) In this largely working-class city, “people of limited means say they’ve rediscovered transport” – a prerequisite to finding a job, maintaining friendships or participating in local arts and culture."
https://www.france24.com/en/20190831-france-dunkirk-free-transportation-bus-success-climate-cities