# The Vehicle Emissions Trading Schemes Order 2023, Paragraph 17: Monitoring emissions of CO2: modifications relating to aerodynamic drag


Where this paragraph applies, the manufacturer of the base vehicle may replace Af with—
(a) the frontal area of the vehicle representative of the road load matrix family; or
(b) the mean value of the frontal area of vehicle H and of vehicle L.

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Source: https://www.legislation.gov.uk/ukdsi/2023/9780348252453/schedule/3/paragraph/17 (the official version)
Page: https://openlegislation.uk/draft-vehicle-emissions-trading-schemes-order-2023/schedule-3/paragraph-17
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.