# The Town and Country Planning (Control of Advertisements) Regulations 1992, Paragraph 2

Extent: E+W

(1) Subject to sub-paragraph (2), the permitted limits of luminance for advertisements falling within Class 4A or 4B are, for an illuminated area measuring not more than—
(a) 0.5 square metre, 1,000 candela per square metre,
(b) 2 square metres, 800 candela per square metre,
(c) 10 square metres, 600 candela per square metre,
and for any greater area, 400 candela per square metre.
(2) For the purposes of calculating the relevant area for the permitted limits—
(a) each advertisement, or in the case of a double-sided projecting advertisement, each side of the advertisement is to be taken separately;
(b) no unilluminated part of the advertisement is to be taken into account.

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Source: https://www.legislation.gov.uk/uksi/1992/666/schedule/3/paragraph/2 (the official version)
Page: https://openlegislation.uk/town-and-country-planning-control-of-advertisements-regulations-1992/schedule-3/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.