text: Furthermore, the reduction of air pollution and smog has become a major advantage in the limitation of car usage. After suffering through days of near-record pollution, Paris, France had composed a temporary driving ban in an attempt to clear the air, according to Rober Duffner in "Paris Bans Driving due to Smog". The passage goes further to explain that the ban followed five days of smog that rivalled the likes of Beijing, China, which is widely recognized for being one of the most polluted cities in the world. Exceptions to the ban were made for hybrids and cars carrying three or more passengers, and public transportation was made to be free. Once the smog cleared enough, the ban was lifted and citizens were allowed back to the road, but the reduction of auto usage was what saved the air from becoming overly polluted. Moreover, in Bogota, Colombia, citizens participate in a car-free day, entitled Day Without Cars, once a year to reduce smog in the cities, according to "Car-free Day is Spinning Into a Big Hit in Bogota" by Andrew Selsky. Violators are charged with $25 fines, but, according to Bogota Mayor Antanas Mockus, the people participate, and the turnouts are large. This day without cars, which has begun to spread to other Colombian cities, is a fantastic way to reduce both air pollution and stress, and is a part of a campaign to oversee the construction of 118 miles of bicycle paths, which, according to Mayor Mockus, is the most of any city in Latin America.