Sadiq Khan should look to the French and impose driving restrictions in the capital during periods of high ozone pollution, the leader of the Green Party on the London Assembly has said. Heatwaves can push up the levels of ozone pollution. Advertisement AdvertisementAdvertisement AdvertisementLondon has already seen three high ozone alerts this year, including two during June's heatwave. Earlier this month, motorists across the Île-de-France were told that speed restrictions were now 20km/h lower than usual when ozone pollution crossed a certain threshold. Ozone pollution is just another element of the pressure on our health when we have these heatwaves.