Interpretation ID: aiam5260
Inc. Box 1188 Mitchell
SD 57301;
Dear Mr. Paradis: This responds to your FAX of November 18, 1993 requesting a clarification of our letter of November 16 as it applies to the rear of the trailers shown in items; 5 and 7 which accompanied your letter of August 31, 1993. As we advised yo with respect to rear markings, Standard No. 108 requires a horizontal strip of retroreflective sheeting across the full width of the trailer. With respect to the trailer shown in; 7, retroreflective tape can be applied across the full width of th 'approach ramp' to meet the requirements since the ramp will be in the down position when the trailer is moving. As we further advised you, paragraph S5.7.1.3(b) anticipates that the length of the color segments may have to be modified to facilitate using material near rear lamps. In the worst cases of trailers with rear surfaces no wider than the minimum required for lamps, breaks in the rear treatment are unavoidable to clear the lamps. But NHTSA expects the manufacturer to minimize the breaks by using red material adjacent to red lamps. With respect to; 5, we recommend applying red/white conspicuity treatment on either sid of the identification lamps, with red material used in the remaining outboard areas. I hope that this answers your questions. Sincerely John Womack Acting Chief Counsel;