Interpretation ID: aiam0036
Jr.
Engineering Services
Blue Bird Body Company
Fort Valley
GA 31030;
Dear Mr. Phelps: This is in response to your letter of November 10, 1967, in which yo requested a clarification of the use of the term 'combined optically' as used in Motor Vehicle Safety Standard No. 108, Sections S3.3(c) and S3.4.4.3.; S3.3(c)>>>*Lamp Combinations and Equipment Combinations*. Two or mor lamps, reflective devices, and items of associated equipment may be combined if the requirements for each lamp, reflective device, and item of associated equipment are met, except that --; (c) No clearance lamp may be combined optically with any taillamp o identification lamp.<<<; This means that no clearance lamp my be combined to use a lense (sic that is common to any other lamp such as a taillamp or identification lamp. The clearance lamp shall have a unique lense (sic).; S3.4.4.3>>>Stoplamps that are combined optically with turn signal lamp need not be operable when the combination is in use as a turn signal or as a vehicular hazard warning signal.<<<; This means that stoplamps that have a lense (sic) that is common wit the turn signal lamps do not have to be operable when the combined stoplamp and turn signal lamp is used primarily as a turn signal or as a hazard warning signal. Stoplamps need not be operable when the combined stoplamp and turn signal lamp unit is used as a hazard warning or turn signal indicator.; We trust these comments will be of assistance in clarifying you problems.; Sincerely, Andrew K. Ness, Acting Director, Office of Performanc Analysis;