Interpretation ID: nht87-1.69

TYPE: INTERPRETATION-NHTSA

DATE: 04/22/87

FROM: AUTHOR UNAVAILABLE; SIGNATURE UNAVAILABLE; NHTSA

TO: T. Chikada

TITLE: FMVSS INTERPRETATION

TEXT:

Mr. T. Chikada Manager, Automotive Lighting Engineering Control Dept. Stanley Electric Co., Ltd. 2-9-13, Nakemeguro, Meguro-ku Tokyo 153, Japan

Dear Mr. Chikada:

This is in reply to your letter of March 13, 1987, with respect to the mounting height of driving lamps and front fog lamps. Noting that these lamps are not equipment required by Federal Motor Vehicle Safety Standard No. 108, you have asked whether they need to be mounted within the range of height which the standard prescribes for headlamps, or may they be mounted, for example, at a height lower than 22 inches such as in the front bumper.

Any lamp that is not required by Standard No. 108 may be added to a motor vehicle and located wherever it appears suitable, provided that the lamp at its location does not impair the effectiveness of lighting equipment required by the standard. Headlamps , parking lamps, and turn signal lamps are the lighting equipment required by Standard No. 108 on the front of a passenger car, and any other four-wheeled vehicle of less than 80 inches overall width. Although Standard No. 108 imposes a minimum mounting height of 22 inches on headlamps, it allows parking lamps and turn signal lamps to be mounted as low as 15 inches above the road surface, which means that they could be mounted in the front bumper, or otherwise close to the mounting location of fog lamps and driving lamps. Therefore, compliance with paragraph S4.1.3 of Standard No. 108 would require a manufacturer of a vehicle equipped with fog and driving lamps to ensure that they do not impair the effectiveness of the headlamps, turn signal lamps, and parking lamps.

Because fog lamps and driving lamps are not covered by Standard No. 108, the individual States may have their own restrictions on the mounting height of these lamps. We regret that we are unable to advise you on these laws. However, the American Associat ion of Motor Vehicle Administrator (AAMVA), 1201 Connecticut Ave., N.W., Washington, D.C., may be able to advise you.

Sincerely,

Erika Z. Jones Chief Counsel

Ms. Erika Z. Jones Chief Counsel Department of Transportation National Highway Traffic Safety Administration 400 Seventh Street, S.W. Washington, D.C. 20590 U.S.A.

Dear Ms. Jones,

Re : Mounting height of auxiliary driving lamps and front fog lamps

We have a question on mounting height of driving lamps and front fog lamps.

Do they need to be mounted within the range of height which is required for headlamps in FMVSS No. 108?

Although they help the function of headlamps, they are not required lighting equipments in FMVSS No. 108.

So we understand that they can be mounted in the lower position than 22 inches, the lower required height of headlamps; for example, into the front bumper, the height of which is less than 22 inches.

We would like to have your confirmation on this matter. We are looking forward to your reply.

Yours sincerely,

Stanley Electric Co, Ltd.

T. Chikada Manager, Automotive Lighting Engineering Control Dept.