Hurry up! Transport in Paris is free during 3 days! From Friday to Monday use metro, buses and trams in the French capital free of charge!
Earlier the government created Velib (a free bike rental) and Autolib (a free electromobile rental).
The main objective of these measures is to reduce air pollution in Paris region which appeared because of the steady hot weather during last week. According to forecasts, the situation should improve next week.