text: In Paris, durring 2014 Paris repetitively reached almost record breaking levels of polution and smog. As a result of all of that smog, the city of Paris regulated the use of automobiles, this action came as a surprise to the nearly four thousand people that were fined $32 and twenty-seven people's cars were impounded due to how they reacted to the tickets. And as a result of this regulation, typically paris would have about 147 micrograms of PM (particulate matter) per cubic meter average per week, and because they regulated driving the smog levels nearly halved in Paris.