Photometry.
S7.10.13 Photometry. Each DRL must have a luminous intensity not less than 500 cd at test point HV, nor more than 3,000 cd at any location in the beam when tested according to the procedure of S14.2.4 as specified by this section, unless it is:
(a) A lower beam headlamp intended to operate as a DRL at full voltage, or a voltage lower than used to operate it as a lower beam headlamp, or
(b) An upper beam headlamp intended to operate as a DRL, whose luminous intensity at test point H–V is not more than 7,000 cd, and whose mounting height is not higher than 864 mm.