ULEZ has cut NO2 levels in the capital significantly, reports the Telegraph. Air quality monitoring at Hither Green Lane and Catford, near Ella Aloo-Kissi-Debrah’s home, show NO2 has fallen by over 50% since 2012, with half that taking place since it became part of the ULEZ. So it seems that ULEZ has helped cut NO2 by about 25%. Not to be sneezed at. But what reductions would Equality Streets have brought? I have claimed that allowing traffic to flow and disperse naturally can cut emissions by at least half, by eliminating the stop-restart motion caused by traffic lights. Despite countless attempts to persuade the authorities to run lights-off trials to test the case, they never agreed. Wouldn’t the job of London Mayor be handy!