text: Congestion in the streets of France seem to be a mayor problem. Also "smog" has occured in the air because of various motor vehicles. In Source Two: "Paris bans driving due to smog" after ordering people with even-numbered license plates to leave their cars at home the congestion of smog and traffic went down by 60 percent. Since cars with certain license plates weren't allowed on the street certain days people were given free public transportation,"public transit was free of charge from Friday to Moday". which has also reduced pollution.