The London Mayor on Tuesday cancelled the £25-a-day central London congestion charge for the most polluting cars.
Boris Johnson was elected to the new post in May, fighting on a platform which included opposing the proposed charge which would have seen residents of the charging zone pay £25 a day to use the dirtiest cars.
Analysts said the end of the £25 fine for vehicles that generate more than 225 grams of CO2 per kilometre also entails the end of a judicial review application by car manufacturer Porsche, which challenged the proposal at the High Court, saying it was unfair and would increase pollution.
Mr Johnson said the plans, backed by predecessor Ken Livingstone, would have meant many of the cars would be ordinary large family cars.
The least-polluting vehicles will pay no congestion charge at all in central London.
"I am delighted that we have been able to scrap the £25 charge, which would have hit families and small businesses hardest,'' Mr Johnson.
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