Photo: Wikipedia , CC Pay to Play Stockholm, Sweden, has had a congestion charge since January 2006. Cars that enter the city center must pay a congestion tax which varies depending on the time of day (from nothing at night to 20 SEK during rush hour). Now that enough time has passed to gather lots

of data on the impact of the congestion charge, the Stockholm City Traffic authorities have released some interesting numbers: “The Stockholm Congestion Charging System, created by IBM (NYSE: IBM) has signifi… Read the full story on TreeHugger

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Congestion Charge Cuts Waiting Time 50% and CO2 by 18% in Stockholm