Three-quarters of all vehicles that entered the Ultra-Low Emission Zone were compliant in the first month of its operation.

The Mayor of London, Sadiq Khan, said in the first month of operation the compliance rate with the ULEZ standards was 74% in a 24-hour period, and 71% in congestion charging hours, up from 61% in March 2019.

The mayor added 9,400 fewer non-compliant vehicles were seen in the zone on an average day a reduction of 26%.

On an average day in the scheme’s first month of operation around 32,100 non-compliant vehicles were detected in the zone.

ULEZ - London Signpost Image

Around 17,400 (54%) paid the charge, including 4,900 ULEZ Fleet charge payments, around 3,000 (9%) were in contravention of the scheme and issued with a warning notice on the first offence and around 11,700 (37%) were not required to pay the daily ULEZ charge as they are eligible for a 100 per cent discount or exemption.

In the run-up the ULEZ going live TfL contacted 6,000 fleet managers and operators to ensure they were aware of the zone.

The Ultra-Low Emission Zone initially covers the same area as the Congestion Charge zone and is in operation 24/7. Pre-Euro6 diesel and pre-Euro4 petrol cars and vans are subject to a daily £12.50 charge on top of the £11.50 C-Charge fee. However, the ULEZ is set to expand to cover the North and South Circular roads in October 2021, impacting significantly more drivers.

“It’s early days, but it’s great to see Londoners and businesses are doing their bit to make a difference, with nearly three quarters of the vehicles driving into central London each day now meeting the standards required to turn around this public health crisis,” said Khan. “It’s vital this compliance is sustained to truly make a difference to our air quality, and as time goes on we will publish more research into the impact of the ULEZ, progressing this ground-breaking, life-saving work even further.”