text: Lastly, it's obvious to say that with less car usage, the more likely it is to have a decrease in number of traffic jams. To further explain, Bogota, Columbia has a program in which people do not use vehicles to get where they need to go. Andrew Selsky states, "...millions of Colombians hiked, biked, skated or took buses to work during a car-free day.. leaving the streets of this capital city eerily devoid of traffic jams." It's a positive thing to have "car-free day" because less accidents mean less people getting injured.