# The Motor Vehicles (Type Approval of Reduced Pollution Adaptations) Regulations 1998, Paragraph 2


The fitting of the device shall not produce an increase in the level of carbon monoxide, hydrocarbons or oxides of nitrogen emitted by the engine of the vehicle.

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Source: https://www.legislation.gov.uk/uksi/1998/3093/schedule/paragraph/2 (the official version)
Page: https://openlegislation.uk/motor-vehicles-type-approval-of-reduced-pollution-adaptations-regulations-1998/schedule/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.