# The Traffic Signs Regulations and General Directions 2016, Paragraph 9

Extent: E+W+S

A symbol provided for in Part 20 may be varied when used on a directional sign by the addition of a white border around the symbol to ensure adequate contrast between the symbol and the background of the sign.

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/12/part/19/paragraph/9 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-12/part-19/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.