A study by researchers at Lund University in Sweden — published in the journal Case Studies on Transport Policy and available via Science Direct — highlights some of the ways that car traffic can be reduced in city centers. Among the most effective are the introduction of a congestion charge, as well as the creation of car-free streets and segregated bike lanes. Drastically reducing the number of cars on the roads in cities is first and foremost an attempt to improve air quality and, with it, quality of life. After completing their study, the researchers came up with no less than 12 measures…