Part 7 Performance classesI1

England, Wales and Scotland

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
3	Luminance		L3	L3	L3	L3	L3
4	Luminance Ratio (On Axis)		R3	R3	R3	R3	R3
4	Luminance Ratio (On Axis)		R1	R1	R1	R1	R1
5	Beam Width	Narrow	B1	B1	B1	B1	B1
5	Beam Width	Wide	B3	B3	B3	B3	B3

Table 2

(1)

Item

(2)

Aspect of Performance

(3)

Requirement or Class

Temperature

Pollution

Protection

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

(1)

Item

(2)

85percentile approach speed (mph)

(3)

Class designation

Up to and including 50

1 or 2

Over 50

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