text: Parin,France is the city that has the most smog out of all cities in Europe. This means that the pollution rate is higher. Thats why acording to source 2 ,Paris enforeced a partial driving ban to help clear the air in the city. Citizens were ordered to leave there vehicles at home or pay a fine of $31. But this did not stop people from using cars almost 4,000 drivers were fined after this ban was enforced. The reason Paris had for doing this is because after five days of intensive smog the congestion was down by 60 percent. By enforcing this ban Paris was able to clear out the smog in 3 days and be back to normal on Tuesday.