Section 205IAC1-5-3. Color and reflectivity requirements

   Color and reflectivity.

(1) The spectrophotometric color values of the yellow-orange fluorescent material shall have a dominant wave length of 590-610 millimicrons and a purity of 98 percent before test. After Durability Test, paragraph 6.2, the dominant wave length of the fluorescent material shall not change more than 10 percent.

(2) The reflective material shall have minimum intensity values of each of the angles listed per Table 1. After Durability Test, paragraph 6.2, the minimum reflective intensity values for the reflective material shall not change more than 20 percent from the values specified in Table 1.

TABLE 1─MINIMUM REFLECTIVE INTENSITY VALUES, R*
Divergence Angle, deg	Incidence Angle, deg	Reflective Intensity, R
0.2	0	10
0.2	15	7
0.2	30	5
0.5	0	5
0.5	15	4
0.5	30	2
* [Measurements shall be conducted in accordance with photometric testing procedures for reflex-reflectors as specified in Society of Automotive Engineers Standard, SAE J594, Reflex Reflectors, and using 50, + 5 sq. in. (322.6, + 32.3 sq. centimeters) of reflective material. The maximum dimension of the test surface shall not be greater than 1.5 times the minimum dimension. The Reflective Intensity (R) is computed from the equation.]

where
	R	=	reflective intensity, candlepower per incident foot-candle per square foot
	Lr	=	illumination incident upon receiver at observation point, foot-candles
	Ls	=	illumination incident upon a plane perpendicular to the incident ray at the test specimen position, foot-candles
	d	=	distance from test specimen to source of illumination (100 ft. as specified in SAE J594), feet
	A	=	area of test surface, square feet

(Indiana Criminal Justice Institute; Rule 5.3; filed Mar 4, 1968, 2:15 p.m.: Rules and Regs. 1969, p. 360; readopted filed May 31, 2002, 3:28 p.m.: 25 IR 3462; readopted filed Nov 24, 2008, 10:14 a.m.: 20081210-IR-205080769RFA; readopted filed Dec 2, 2015, 2:53 p.m.: 20151230-IR-205140408RFA) NOTE: Transferred from the Office of Traffic Safety (150 IAC 1-5-3) to the Indiana Criminal Justice Institute (205 IAC 1-5-3) by P.L.39-1993, SECTION 12, effective July 1, 1993.