All of the following are used to reduce traffic congestion in many world metropolitan cities EXCEPT London residents paying a congestion charge to drive downtown during the daytime.
Toronto drivers paying tolls to drive on freeways during congested times.
Singapore residents needing a permit to drive downtown during the busiest times of day.
Copenhagen drivers being banned from driving in portions of central areas downtown.
Los Angeles drivers being prohibited from using major freeways during high congestion times.