The congestion charge exemption for sub-75 g/km vehicles ends in Oct 2021, and from 2025, zero emissions cars will lose their exemption too. Sadiq Khan’s rationale? Traffic pollution damages health and development. We know that. But zero emissions cars emit zero emissions, so what’s the rationale for excluding them? Meanwhile, those weapons of mass distraction, danger and delay – traffic lights – continue to multiply emissions by a factor of up to 29 times.