# The Road Vehicles (Construction and Use) Regulations 1986, Paragraph 9

Extent: E+W+S

Every gauge connected to a gas container or to a pipeline shall be so constructed as to be unlikely to deteriorate under the action of the gas used or to be used and shall be so constructed and fitted that—
(a) no gas can escape into any part of the vehicle as a result of any failure of the gauge, and
(b) in the event of any failure of the gauge the supply of gas to the gauge can be readily stopped.
Provided that the requirement specified in sub-paragraph (b) above shall not apply in respect of a gauge fitted as an integral part of a gas container.

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Source: https://www.legislation.gov.uk/uksi/1986/1078/schedule/5/paragraph/9 (the official version)
Page: https://openlegislation.uk/road-vehicles-construction-and-use-regulations-1986/schedule-5/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.