Interpretation ID: nht76-1.30

DATE: 03/01/76

FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA

TO: Leisure Time Products, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This is in response to your letter of January 29, 1976, requesting an interpretation of the requirements of S.6 of Federal Motor Vehicle Safety Standard No. 111, Rearview Mirrors, as they apply to the manufacture of mobile homes with a GVWR of greater than 10,000 pounds.

The standard requires that these vehicles be equipped with outside mirrors of unit magnification, each with not less than 50 in<2> of reflective surface, on both sides of the vehicle. While you are free to provide additional mirrors, the standard clearly requires two mirrors each of which has at least 50 in<2> of reflective surface. Substitution of a number of small mirrors for one or both of the 50 in<2> mirrors is impermissible, even if a total reflective area of 50 in<2> is provided.

If you require any further assistance, do not hesitate to write.

SINCERELY,

Leisure time PRODUCTS, INC.

January 29, 1976

Chief Council N.H.T.S.A. Department of Transportation

SUBJECT: Motor Vehicle Safety Standard No. 111

As a manufacturer of motor homes of over 10,000 pounds GVWR, I am not certain on how to interpret Section S6 of Standard No. 111. I understand the minimum requirements for mirror size, capability, and location which would be applicable. The item which I question is the 50 in<2> of reflective surface. Are the mirrors required to be of one piece instead of possibly two piece? For example, two mirrors one with 40in.<2> reflective surface and additional mirror of adequate size to meet the 50in.<2> requirement for each side of vehicle.

Your immediate attention to this matter would be appreciated. Thank you.

Tommy Watson Engineer of Codes and Standards