# The Traffic Signs Regulations and General Directions 2016, Paragraph 4

Extent: E+W+S

The sign may display four lamps of the size, colour and type shown—
(a) when placed beside the carriageway, in the diagram at item 12 of the sign table in Part 2;
(b) when mounted on a gantry or other structure over the carriageway, in the diagram at item 11 of that table.

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/15/part/4/paragraph/4 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-15/part-4/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.