Interpretation ID: nht88-4.8

TYPE: INTERPRETATION-NHTSA

DATE: NOVEMBER 11, 1988

FROM: C. I. NIELSEN III -- VICE PRESIDENT, WESBAR

TO: ERIKA Z. JONES -- CHIEF COUNSEL, D.O.T., NHTSA

TITLE: NONE

ATTACHMT: ATTACHED TO MEMO DATED 12-30-88, TO C.I. NIELSEN, FROM ERIKA 2. JONES -- NHTSA, STD 108, REDBOOK A33

TEXT: Thank you for your November 3 letter to our A1 Cunningham clarifying the definition of single compartment and multiple compartment lamps. It is most helpful to understand these terms to assure we comply with applicable D.O.T. requirements.

We now write you to please clarify for us the minimum square inches required of a turn signal lens for a trailer/vehicle, 80" or more in overall width, using a single compartment lamp assembly. We believe the answer should lie in J588e, but we find the text not only unclear, but confusing.

Your response on this clarification will be most appreciated.