Congestion Charge Has Reduced Air Pollution

"The first evidence that London's air is cleaner and safer since the congestion charge came in has been unveiled by the Mayor. Ken Livingstone told a Commons committee levels of pollution had fallen significantly since the £5 charge reduced traffic in the city. Levels of particulates - tiny smoke and dust molecules which can cause cancer and breathing problems - have dropped by 12 per cent in the charging zone, he said."