text: The city of love may not be so lovely if it's so smoggy you can barely see. Paris was gaining so much air pollution from the amount of gas that was released from driving hta tthey put a ban on driving. This ban consisted of a few new rules to help prevent the smog from overpowering the beauty of the city. On Mondays, even numbered license plates were not allowed to use theie car for anything. This same rule applied to the odd numbered license plates on Tuesdays. This helped limit the amount of driving, in return limiting the amount of smog. Smog is created when the area has cold night weather and warm day weather, causing the air to trap car emission. Diesel can be a big contributer to this and is the main gas type in France. France favors diesel because of their taxing system, but it seems they don't care too much about their environment.