# The Traffic Signs Regulations and General Directions 2016, Paragraph 8

Extent: E+W+S

In relation to each aspect of performance specified in column 2 of an item in the table below, a cone or cylinder must comply with the requirement or test specification of British Standard BS EN 13422:2004+A1:2009 specified in column 3.
(1)
Item
(2)
Aspect of performance
(3)
Requirement or test specification and class
1
Daylight chromaticity co-ordinates and luminance factors
Retroreflective material: Class LB in Table 2
Non-retroreflective exterior surfaces: Table 3.A
Non-retroreflective interior surfaces : Table 3.B
2
Coefficient of retroreflection
Dry conditioned : Class R1B or R2B in Table 4.B
Wet conditions: Class WT1 in Table 6
3
Height and minimum weight (cones)
Class W3 in Table 1

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