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Interpretation ID: nht71-1.47

DATE: 01/08/71

FROM: R. H. COMPTON -- NHTSA; SIGNATURE BY CHARLES A. BAKER

TO: A. Hammerstein

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to your letter of December 23, 1970, to the U. S. Department of Tranportation concerning the time when stop lamps will be required to meet Class A photometrics.

The conflict between the requirements of paragraphs S4.1.1.6 and S4.1.1.7 has already been called to our attention, and will be clarified in an amendment to Standard No. 108 scheduled to be published in the Federal Register in the near future.

It was not intended for the stop lamps to meet the Class A photometric values, nor are they required to, until January 1, 1973.