Luxembourg abolished fares for trains, trams and buses on Saturday in what the government said was a bid to tackle road congestion and pollution, as well as supporting low earners.

All standard-class journeys on public transport in the tiny and wealthy European country are now free of charge, compared to an annual pass worth 440 euros ($485) before. Travellers can still pay for first class, at a cost of 660 euros a year.

Transport minister Francois Bausch said, “The main reason is to have a better quality of mobility, and then the side reason is clearly also environmental issues.”

Luxembourg has just over 600,000 inhabitants, but 214,000 more travel in for work every day from neighbouring Germany, Belgium and France, causing heavy traffic jams as the majority of workers commute by car.

More than half of Luxembourg’s greenhouse gas emissions come from transport.

To cope with the many commuters, Luxembourg plans to invest 3.9 billion euros in railways from 2018-28, upgrade the bus network and add more park-and-ride sites on the border.

Despite these investments, the government expects 65% of commuters to still get to work by car in 2025, down from 73% in 2017.

Luxembourg is the first country to roll out free transport, but some cities, including Estonian capital Tallinn, have also experimented with the idea.