Key information
Request reference number: MGLA060223-9369
Date of response:
Summary of request
Your request
Please advise under FOI whether the ULEZ level of 0.08g/km of NOx is calculated on ;
- Urban environment (i.e. around town)?
- Extra-urban environment (i.e. a highway)?
- Combined cycle or complete cycle i.e. around town and highway?
And whether a vehicle qualifies if it is
- equal to 0.08g/km of NOx or
- less than 0.08g/km of NOx.?
Our response
The GLA does not hold the information you requested.
Emissions of nitrogen oxides (NOx) and particulate matter (PM) from vehicles are regulated by the Euro standards, which require vehicle engines to be designed to meet emission limits for these pollutants. Compliance with these limits is precisely tested and measured by national approval authorities before engines can be put on the market.
The Vehicle Certification Agency (VCA) is the designated UK Type Approval Authority. You can read more about the process of vehicle type approval on the VCA website. For more information, we suggest you contact them at : https://www.vehicle-certification-agency.gov.uk/vehicle-type-approval/