Interpretation ID: 1985-02.27

TYPE: INTERPRETATION-NHTSA

DATE: 05/13/85

FROM: AUTHOR UNAVAILABLE; Jeffrey R. Miller; NHTSA

TO: Mr. Robert L. Hart

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to your letter of February 11, 1985, to former Chief Counsel Frank Berndt asking for an interpretation that a combination stop lamp-rear view mirror you have intended would be permissible under paragraph S4.4.1 of Standard No. 108.

That paragraph precludes combining a center high-mounted stop lamp with any other lamp or reflective device. You have concluded that the prohibition applies only to passenger cars manufactured after September 1, 1985, "and does not prohibit application of my device to vehicles manufactured prior to the effective date of the mandate."

Actually, S4.4.1 does not apply to your device at all. The lamp established by the standard is one that is mounted on the vertical centerline of the vehicle, at or near the rear window with no relationship to the forward left side of the vehicle where your combination lamp-mirror would be located. Standard No. 108 does contain in paragraph S4.1.3 a prohibition against additional lighting devices that impair the effectiveness of the lighting equipment required by the standard. But on the basis of the facts as you have presented them to us, we cannot say that impairment would exist. We therefore conclude that your device is not prohibited by Standard No. 108 as either original or replacement equipment on any motor vehicle.

However, Motor Vehicle Safety Standard No. 111, Rearview Mirrors, does relate to your device. Passenger cars are required to be equipped with an outside rear view mirror on the driver's side; under paragraph S5.2.2 ". . . neither the mirror nor the mounting shall protrude farther than the widest part of the vehicle body except to the extent necessary to produce a field of view meeting or exceeding the requirements of S5.2.1." Some of your designs show the lamp portion at the left end of the device's housing resulting in a wider unit than one incorporating a mirror alone. We recommend that you re-examine these designs with paragraph S5.2.2 in mind, relocating the lamp to the area either above or below that of the mirror surface if you conclude that the combination mounting would not comply with Standard No. 111.

There is no similar mounting requirement for driver's side mirrors on vehicles other than passenger cars, and your designs for mirrors on these vehicles would appear permissible under Standard No. 111.

Sincerely,

February 11, 1985

Frank Berndt Office of the Chief Counsel U.S. Department of Transportation National Highway Traffic Safety Administration

Subject: Petition for Rulemaking

Dear Mr. Berndt:

This letter is to request an amendment to FMVSS No. 108: Lamps, reflective devices and associated equipment. I reference specifically, S4.4.1 of 571.108, pp243 of the Federal Register, 1984: . . . and no high mounted stop lamp shall be combined with any other lamp or reflective device.

The purpose of my petition is to obtain clearance to pursue technical and commercial development of my invention - Side Mounted Rear View Mirror with Brake Light/Wide Vue Brake Light - (on which I have a patent pending) for OEM as well as aftermarket merchandising. My interpretation of the new standard is that the high mounted lamp relates specifically to new passenger vehicles manufactured on or after September 1, 1985, and does not prohibit application of my device to vehicles manufactured prior to the effective date of the mandate.

Although functional testing of the Wide Vue Brake Light has not been concluded, my instincts and observations, and those of consultants who are assisting me, give rise to the belief that my device will be more effective than (and an auxilliary to) the high mounted lamp in terms of reducing rear end collisions, especially in highway traffic patterns where chain reaction collisions are most likely to occur.

My invention is designed to be applicable to all roadway motorized vehicles, and is, therefore, more effective than the high mounted stop lamp which is applicable only to passenger vehicles. A most important design feature of my device is that the light is recessed and, therefore, is not within view of the primary driver; i.e., it can be seen by trailing drivers only and cannot distract the primary driver.

The attached materials, including technical drawing and illustrations and a narrative research summary by Invention Marketing, Inc., present reasons why the Wide Vue Brake Light is more effective.

I should appreciate your favorable review of my petition and removal/revision of the restriction encompassed in S4.4.1 of 571.108, in order that I may approach vehicle manufacturers relative to possible inclusion of my invention in new vehicles after the 1986 model year.

Please contact me for clarifications or answers to questions regarding my invention.

Rxobert L. Hart

Enclosures Omitted.