Interpretation ID: nht87-3.24

TYPE: INTERPRETATION-NHTSA

DATE: 11/09/87

FROM: AUTHOR UNAVAILABLE; Erika Z. Jones; NHTSA

TO: Stanley Electric Co., Ltd.

TITLE: FMVSS INTERPRETATION

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

Dear Mr. Chikada:

This is in reply to your letter of September 18, 1987, with respect to a new headlamp design of very low profile. The height of the headlamp is less than that required by dimension A of Figure 4, of Standard No. 108, and you have asked NHTSA: "to make th e height of the headlamp lower than dimension A...on condition that the additional adaptor will be as original equipment".

You are under the impression that our interpretation to you dated March 26, 1987, relating to acceptability of a headlamp lens with a 60 degree angle was an affirmative one conditioned upon the provision of an adaptor as original equipment. In fact, we o nly advised you that such an adaptor should be provided, not that it was required. With respect to your present letter, dimension A is established by Standard No. 108 and cannot be modified except through rulemaking, whether or not an adaptor is provided .

If you wish to submit a petition for rulemaking to amend dimension A of Figure 4 we shall be pleased to consider it. The agency also intends to publish in the near future a notice asking comments on various aspects of vehicle headlamp aim and aiming meth ods which you may wish to consider in relation to your new headlamp design. Sincerely,

Erika Z. Jones Chief Counsel

September 18, 1987

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,

We asked you about use of 60 degrees slanted headlamp by our letter of August 4, 1986. And you replied to us by your letter of March 26, 1987 that our new developed device was permitted to use only when an adaptor is provided as original vehicle equipmen t.

We are now developing a new headlamp which has higher characteristic of aerodynamics than the above headlamp by shortening the height of headlamp. However, we have found it hard to equip the timing pads on the lens because the height of headlamp becomes lower than dimension A required by FMVSS No.108, Figure 4. (See attached drawing.)

So we are asking you following request.

- Request -

We would like to ask you to accept to make the height of headlamp lower than dimension A specified by FMVSS N0.108, Figure 4 on condition that the additional adaptor will be provided as original vehicle equipment.

As mechanical aiming of this lamp can be made only by using additional adaptor, we assure that users will not be given disadvantage even if the height of headlamp becomes lower.

We are looking forward to your reply. Yours Faithfully, Stanley Electric Co., Ltd. T. Chikada Manager, Automotive Lighting Engineering Control Dept. Attachment