Interpretation ID: nht90-1.99

TYPE: Interpretation-NHTSA

DATE: April 5, 1990

FROM: Richard E. Portors -- Vice President and General Manager, Royale Limousine Manufacturers

TO: Zachary R. Fraser -- NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 8-30-90 from P.J. Rice to R.E. Portors (A36; Std. 108)

TEXT:

Please give me an advisory on my understanding of requirement 571.108 - S4.1.1.41 high mounted stop lamps section (a) projected area of not less than 4 1/2 square inches.

The 90 Cadillac stop lamps measure 6 sq. inches of area. When installing a boomerang TV antenna the shaft area displaces 1.125 sq. inch of area, this would leave an exposed area of 4 7/8" of light and would exceed the minimum requirements of section (a) . Also, section (b) would not be affected by the boomerang. Without window glazing, section (c) would not be affected either. I feel the boomerang antenna positioned properly would not affect the requirements of 571.108.

Please advise me on your findings as soon as possible.

Attached is a copy of the Federal Register, section 571.108, 49 CFR Ch. V (10-1-85- Edition), page 218 (text omitted)