# The Traffic Signs Regulations and General Directions 2016, Paragraph 2

Extent: E+W+S

Where the sign is mounted on a bollard—
(a) the bollard must—
(i) be illuminated by means of internal lighting; and
(ii) conform to British Standard BS EN 12899-2:2007; or
(b) in the case of a self-righting bollard, the bollard—
(i) must be illuminated by the use of retroreflecting material; and
(ii) conform to British Standard BS 8442:2015.

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/3/part/5/paragraph/2 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-3/part-5/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.