"The congestion charge initially contributed to reducing the level of car traffic in inner London. However, the regained space was quickly filled by taxis and o

"The congestion charge initially contributed to reducing the level of car traffic in inner London. However, the regained space was quickly filled by taxis and other service vehicles, which benefit from exemptions. Cars and taxis represent about three-quarters of London’s road traffic. The number of miles driven by cars and taxis has progressively decreased by about 6% or 1 billion vehicle miles since 2000; in turn, the traffic of light commercial vehicles increased by 1 billion vehicle miles. Overall, the level of London’s road transport has thus remained fairly stable over the past two decades, ranging around 20 billion vehicle miles per year. The road pricing schemes are an important instrument for raising additional income for greening London’s transport system. According to the Annual Report and Statement of Accounts 2021/22 of Transport for London, congestion charge net revenues reached £307 million in 2021/22. The ULEZ and LEZ generated a net income of £111 million and £34 million in 2021/22, respectively." https://www.oecd.org/climate-action/ipac/practices/london-s-congestion-charge-and-its-low-emission-zones-c6cd48e9/ https://www.oecd.org/climate-action/ipac/practices/london-s-... Take from that what you will