SubLGT
Flashlight Enthusiast
What is the minimum legal mounting height (in the USA) for an (aftermarket LED) DRL lamp?
Looking through Standard No.108 all I found was a specification for maximum height: 1.067 meter.
reference: https://www.law.cornell.edu/cfr/text/49/571.108
Looking through Standard No.108 all I found was a specification for maximum height: 1.067 meter.
S7.10 Daytime running lamps (DRLs).
S7.10.1 Number. See Table I-a.
S7.10.2 Color of light. See Table I-a.
S7.10.3 Mounting location. See Table I-a.
S7.10.4 Mounting height. See Table I-a. and S7.10.13(b)............
Not more than 1.067 meters above the road surface if not a pair of lamps required by this standard or if not optically combined with a pair of lamps required by this standard
See S7.10.13(b) for additional height limitation.............
S7.10.13 Photometry. Each DRL must have a luminous intensity not less than 500 cd at test point H-V, 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:
(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.
reference: https://www.law.cornell.edu/cfr/text/49/571.108
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