# Motor Vehicles (Construction and Use) Regulations (Northern Ireland) 1999, Paragraph 9: Trailers


(1) Where a trailer is used for the carriage of a gas cylinder, a reducing valve shall be fitted on the trailer.
(2) A pipe used for conveying gas from a trailer to the engine of a vehicle shall not contain compressed gas.

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Source: https://www.legislation.gov.uk/nisr/1999/454/schedule/4/paragraph/9 (the official version)
Page: https://openlegislation.uk/motor-vehicles-construction-and-use-regulations-northern-ireland-1999/schedule-4/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.