ISO 6742-2 regulation of reflector for bicycle (2)

Photometry requirement

Table 4 – Coefficients of luminous intensity, CIL, for conventional reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±5° ±20°
White	0°20’		1200	800	400
White	1°30’		20	11.2	10
Yellow	0°20’		750	500	250
Yellow	1°30’		12.5	7	6.25
Red	0°20’		300	200	100
Red	1°30’		5	2.8	2.5

Table 5 – Coefficients of luminous intensity, CIL, for conventional reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±0° ±20°
White	0°12’		2500	1650	850
White	1°30’		26	18	11
Yellow	0°12’		1560	1030	530
Yellow	1°30’		21	15	10
Red	0°12’		625	410	210
Red	1°30’		9	6	4

Table 6 – Coefficients of luminous intensity, CIL, for wide angle reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±0° ±20°	±0° ±30°	±0° ±40°	±0° ±50°
White	0°20’		1800	1200	610	540	470	400
White	1°30’		34	24	15	15	15	15
Yellow	0°20’		1125	750	380	335	290	250
Yellow	1°30’		21	15	10	10	10	10
Red	0°20’		450	300	150	135	115	100
Red	1°30’		9	6	4	4	4	4

Table 7 – Coefficients of luminous intensity, CIL, for wide angle reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±0° ±20°	±0° ±30°	±0° ±40°	±0° ±50°
White	0°12’		2500	1650	850	750	650	550
White	1°30’		26	18	11	11	11	11
Yellow	0°12’		1560	1030	530	465	405	340
Yellow	1°30’		21	15	10	10	10	10
Red	0°12’		625	410	210	185	160	135
Red	1°30’		9	6	4	4	4	4

Table 8 – Coefficients of luminous intensity, CIL, for pedal reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±0° ±20°
Yellow	0°20’		300	200	100
Yellow	1°30’		12	9	6

Table 9 – Coefficients of luminous intensity, CIL, for pedal reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±5° ±20°
Yellow	0°12’		450	700	400
Yellow	1°30’		30	20	10

Table 10 – Coefficients of luminous intensity, CIL, for high values reflectors

Colour	Observation angle α	Entrance angle β(in degree)
Colour	Observation angle α	Vertical V Horizontal H	0° 0°	±10° 0°	±5° ±20°
Red	0°20’		1000	700	400
Red	1°30’		30	20	10

“ISO 6742-2 Cycles-Lighting and retro-reflective devices-Part2: Retro-reflective devices”