I suggest you to read this article titled
London, Transportation Fees, & EV Adoption — An Equation To Lower Air Pollution
https://cleantechnica.com/2022/10/13/london-transportation-fees-ev-adoption-an-equation-to-lower-air-pollution/
It illustrates the congestion and air pollution policies in place in London. It is a useful addition to my presentation of the case of Milan. I added some slides about it in the powerpoint.
Best regards,
Romeo Danielis