# The Traffic Signs Regulations and General Directions 2016, Paragraph 1

Extent: E+W+S

A cone is to consist of a conically shaped device—
(a) the base of which is—
(i) of any single colour; and
(ii) a polygon having not more than eight sides, which would be contained wholly within a circle with a diameter of three quarters of the height of the cone; and
(b) which conforms to the provisions of British Standard BS EN 13422:2004+A1:2009 set out in paragraph 8.

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/13/part/8/paragraph/1 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-13/part-8/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.