Zero fares & car bans reduce traffic congestion & air pollution in Paris

Fare-Free New Zealand: "In March, air pollution in northern France reached dangerous levels and resulted in a strong government response. Public transportation fees were removed and cars were partially banned from the roads. This month, as data are released by Airparif, one can see that this response led to a drop in Paris road traffic of 18% and 6-30% drop in air pollution levels."