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

Extent: E+W+S

Where “10” is used as an example numeral, a distance in miles must be expressed as—
(a) “10 miles” (or, where 1 is the numeral, “1 mile”);
(b) “10 m”; or
(c) “10”.

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/18/part/3/paragraph/2 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-18/part-3/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.