text: Another way,that Cities in Europe have started to take part is, banning cars off the streats of Paris. Paris has a large portion of smog than other European Capitals. Congestion was low during the five- day period that automobiles where banned off the streets of paris. Within the five-day period public transportation was free to get people places. The results of this car banning was a success to clear out the smog which is a risk of endangering a person's health.