The city of Milan, Italy, has instituted a congestion pricing system.
"The 'eco-pass' is being policed by cameras at 43 electric gates around an 8-sq-km (three-square-mile) inner area."
"The mayor of Milan, Letizia Moratti, launched the charge predicting a 30% cut in pollution levels and a 10% reduction in traffic."
"Electric and hybrid cars are allowed to enter the congestion charge zone without payment."
"On weekdays, between 0730 and 1930, drivers will have to buy a ticket either online or from key points in the city."
"The price of the ticket depends on the vehicle involved and anyone who fails to pay the charge will face a fine of at least 70 euros (£52)."
"Money raised will go towards buses, cycle paths and green vehicles."