text: Second, walking or taking a bus lowers air pollution. In France, air pollution was so bad, the government set a one-day ban on driving motorvehicles. Instead, residents could take public busses free of charge, or walk. Anyone who decided to drive their vehicle on the day they were banned, faced a $31 fine. Another city in Colombia also started a similar campaign. Government officials in Bogota, Colombia set a one day ban in the city called "the Day Without Cars". The turnout was large, people rode busses, rode bikes, or walked to wherever they needed to go. This eliminated traffic james, and lowered air pollution. Violaters of the ban had to pay a $25 fine. Other countries surely will soon do the same thing.