Interpretation ID: aiam3911
Manager
Technical Administration Dept.
Koito Manufacturing Co.
Ltd.
Shizuoka Works
500
Kitawaki
Shimizu- shi
Shizuoka-ken
Japan;
Dear Mr. Iwase: This is in reply to your letter of February 1, 1985, with reference t the compliance with Motor Vehicle Safety Standard No. 108 of a proposed motorcycle headlamp design.; In the design shown in your letter a single housing would contain tw dual-filament bulbs, each with an independently aimed reflector. You have stated that the headlamp can comply with the photometric requirements of SAE J584 when either compartment is lit, and that the assembly will meet all other requirements of J584.; A dual bulb arrangement in a single housing is considered a singl headlamp, and therefore its compliance will be judged when both compartments are lit to provide either the upper or lower beam. Assuming that when both compartments are lit the combined candlepower at individual test points does not exceed the maxima imposed by J584 for those test points, your design appears to comply with Standard No. 108.; Sincerely, Jeffrey R. Miller, Chief Counsel