# Motor Vehicles (Construction and Use) Regulations (Northern Ireland) 1999, Paragraph 1


This Part of this Schedule applies to a vehicle if, when the engine is running without load at a normal idling speed, the carbon monoxide content of the exhaust emissions from the engine exceeds the relevant percentage of the total exhaust emissions from the engine by volume.

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Source: https://www.legislation.gov.uk/nisr/1999/454/schedule/10/paragraph/1 (the official version)
Page: https://openlegislation.uk/motor-vehicles-construction-and-use-regulations-northern-ireland-1999/schedule-10/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.