# The Traffic Signs Regulations and General Directions 2016, Paragraph 38

Extent: E+W+S

The post provided for the mounting of the sign must be coloured in alternate black and yellow bands each 300 mm deep with a black band uppermost below the bottom of the sign face and the yellow bands may be reflectorised.

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/14/paragraph/38 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-14/paragraph-38
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.