Interpretation ID: aiam2822
Engineer
Highway Manufacturing Company
P.O. Box 256
Edgerton
WI 53534;
Dear Ms. Kruckenberg: This is in reply to your letter of March 1, 1978, to Mr. Vinson of thi office asking whether marker lamps on your new 'bevel designed front Van Trailer' comply with Federal Motor Vehicle Safety Standard No. 108. Specifically, instead of providing two amber clearance lamps, on the trailer front and two amber side marker lamps at the trailer's leading edge, you would install a combination clearance-side marker lamp at 45 degrees on the beveled leading edge of the trailer.; Paragraph S4.4.1 of Standard No. 108 permits a side marker lamp to b combined with a clearance lamp 'if the requirements for each lamp...are met....' This means that the combination lamp in position on the vehicle must meet the requirements of SAE Standard J592e, *Clearance, Side Marker, and Identification Lamps*, July 1972. This standard addresses specific photometric requirements for combination clearance and side marker lamps and I enclose a copy for your information.; Sincerely, Joseph J. Levin, Jr., Chief Counsel