text: A usual sight to see in busy cities and on main streets is the amount of cars that jam the street alway the way up during certain hours of the day. This can become increasingly annoying to some people that can be on their way to school or job. A car-free day has had a very succesul turn out in Bogota, Colombia. Source number 3 described the streets of the capital of Colombia to be "Eerily devoid of traffic jams." on that day. So many people might have participated because violators would be fined $25. This car-free day was intentionally placed to promote alternative transportations such as biking or public buses and to also reduce smog. Another example of a type of car limiting was seen in Paris, France. Paris was near a record amount of smog in the air with "147 micrograms of particulate matter (PM) per cubic meter compared with 114 in Brussels and 79.7 in London." - Source 2. Paris took action to try and reduce smog with this simple method: Leave cars with even-numbered license plates at home or face a $31 fine. They proceeded on to the next day with the same concept but this time instead of even-numbered plates, it was odd-numbered plates. This reduced congestion by 60 percent in the capital of France.