Drivers of the most polluting cars will face an additional daily charge when entering central London, as the city is battling air pollution.
Starting on Monday, gas and diesel cars are facing a toxicity charge of 10 pounds a day, in addition to the congestion charge of 11.5 pounds they are already paying every time they enter the central part of the city.
The new rules apply primarily to cars registered before 2006 and may include some registered before 2008.
London Mayor Sadiq Khan said more than 9,000 premature deaths are caused by poor air quality annually, and the T-Charge will encourage people to give up polluting, harmful vehicles.
"We have more than 9,000 deaths pr