# The Traffic Signs Regulations and General Directions 2016, Part 7: Performance classes

Extent: E+W+S

Table 1
(1)
Item
(2)
Aspect of performance
(3)
Requirements or classes for colour
(4)
Requirements or classes for colour
(5)
Requirements or classes for colour
(6)
Requirements or classes for colour
(7)
Requirements or classes for colour
1
White
Yellow
Green
Red
Blue
2
Colour Chromaticity Area
Area 10
Area 9
(Yellow C2)
Area 11
(Green C2)
Area 7
(Red C2)
Area 12
(Blue C2)
3
Luminance
L1
L1
L1
L1
L1
L3
L3
L3
L3
L3
4
Luminance Ratio (On Axis)
R3
R3
R3
R3
R3
R1
R1
R1
R1
R1
5
Beam Width
Narrow
B1
B1
B1
B1
B1
Wide
B3
B3
B3
B3
B3
Table 2
(1)
Item
(2)
Aspect of Performance
(3)
Requirement or Class
1
Temperature
T1
2
Pollution
D1
3
Protection
P2
Table 3
(1)
Item
(2)
Visual performance parameter
(3)
Class designation - Level 1
(4)
Class designation - Level 2
1.
Colour
C2
C2
2.
Luminance
L3
L1
3.
Luminance ratio
R3
R1
4.
Beam Width
B1 or B3
B1 or B3
Table 4
(1)
Item
(2)
85percentile approach speed (mph)
(3)
Class designation
1.
Up to and including 50
1 or 2
2.
Over 50
1

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Source: https://www.legislation.gov.uk/uksi/2016/362/schedule/16/part/7 (the official version)
Page: https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-16/part-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.