Interpretation ID: 1982-2.14

DATE: 05/27/82

FROM: FRANK BERNDT -- CHIEF COUNSEL, NHTSA; SIGNATURE BY STEPHEN P. WOOD

TO: Mrs. James J. Mitchell Jr.

TITLE: FMVSS INTERPRETATION

TEXT: The National Highway Traffic Safety Administration is pleased to learn that you want to install a high-mounted stop lamp on your 1978 Buick LaSabre. The two studies that the Administration funded, one with the Essex Corporation and the other with the Allen Corporation, indicated that rear end collisions could possibly be reduced by 50 percent with the use of a single high-mounted stop lamp. We do not know whether the States of New York or New Jersey will allow the use of these lamps. Our Office of Rulemaking contacted the American Association of Motor Vehicle Manufacturers (AAMVA) but the information we received was indefinite, and I would suggest that you contact your local State Police for a definitive answer. The agency has proposed that passenger cars be equipped with this system, and if the proposal is adopted, the lamps would be legal in all States.

As to where to locate these lamps on the car, our research showed that a single lamp, placed on the rear vertical centerline of the vehicle and within the back window (either inside or outside) was the most effective position. Our research also included a system of two high-mounted lamps, mounted on either side of the rear window, apparently similar to the one you observed in upstate New York; however, this was not nearly as effective as the single lamp system in reducing rear end collisions.

SINCERELY,

April 2, 1982

Department of Transportation National Highway Safety Administration

Gentlemen:

Based on the attached article, which appeared in the June 1981 issue of McCall's Magazine, I sent a check for $ 29.90 to Amerace Brands Division, Hilite, Ace Road, Butler, N.J. 07405 for two Slimsonite Hi Lite brake lights, to fit a 1978 Buick LaSabre sedan.

Would you please tell me which states authorize these lights and where they must be placed on the car -- I am, of course, interested in New York State. The reason I make this inquiry is that when my husband took the lights to our local service station, the mechanic suggested that my husband check with the local police regarding the legality of these lights. We border on the State of New Jersey. My husband learned that we could not affix the lights; that if we did, he would be asked to remove them by the police.

When we traveled upstate New York, I noticed a car with similar lights, affixed in the back window, on either side. I must say that they do indicate when the car ahead is stopping. As a legal secretary, I worked on many accident cases, and I personally feel that a driver should give all the warning he can when he plans to stop.

Thank you for your reply.

Mrs. James J. Mitchell, Jr.