Interpretation ID: nht94-4.22

TYPE: INTERPRETATION-NHTSA

DATE: September 7, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: David Ori, Manager -- Bureau of Motor Vehicles, Vehicle Control Division, Harrisburg, PA

TITLE: NONE

ATTACHMT: Attached to letter dated 05/06/94 from David L. Ori to Jim Gilkey (OCC 9977)

TEXT: This responds to your letter to Mr. James Gilkey of this agency's Office of Vehicle Safety Compliance, requesting confirmation of your understanding of the applicability of Federal Motor Vehicle Safety Standard No. 205 to certain limousines. You were co ncerned about the permissibility of applying sun screening or window tinting to such vehicles during the original manufacturing process, and during the "second stage or alteration phase of the manufacturing process."

By way of background information, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue Federal Motor Vehicle Safety Standards that set performance requirements for new motor vehicles and items of motor vehicle equipment. Und er this authority, NHTSA issued Standard No. 205, "Glazing Materials," to specify performance requirements for various types of glazing and to specify the location in the vehicles in which each item of glazing may be used. One provision in Standard No. 205 requires a minimum of 70 percent light transmittance in any glazing area requisite for driving visibility. The primary purpose of this requirement is to ensure adequate visibility through the vehicles's windows, thereby reducing the risk of a motor v ehicle crash.

NHTSA does not approve or certify any vehicles or items of equipment. Instead, each manufacturer is responsible for "self-certifying" that its products meet all applicable safety standards. NHTSA's certification regulations are set forth in 49 CFR Part 567. Under this regulation, each manufacturer is required to certify that its motor vehicles comply with all applicable Federal safety standards, including Standard No. 205. As you correctly state, second stage manufacturers and alterers also have cer tification responsibilities. Specifically, a final stage manufacturer is responsible for certifying a vehicle pursuant to 49 CFR @ 567.5. Accordingly, you are correct that a final stage manufacturer is required to certify that its finished product, incl uding the glazing materials, complies with all applicable Federal safety standards.

A person who alters a previously certified new vehicle also must certify that the altered vehicle complies with all applicable standards. 49 CFR @ 567.7. However, this provision does not apply to the "addition, substitution, or removal of readily attach able components ... or minor finishing operations, such as painting." NHTSA views the addition of window tint film as a "minor finishing operation." Accordingly, a person adding such tint film would not be considered an alterer and therefore would not be subject to certification responsibilities.

However, aside from certification responsibilities, pursuant to 49 U.S.C. @ 30112a, "a person may not ... sell, offer for sale, [or] introduce or deliver for introduction in interstate commerce ... any motor vehicle...unless the vehicle...complies with [ all applicable standards]." Thus, it would be a violation of the statute to sell a new vehicle whose windows which are requisite for driving visibility had been tinted to allow less than 70 percent light transmittance.

Moreover, with respect to vehicles that are no longer new, a motor vehicle manufacturer, distributor, dealer, or repair business "may not knowingly make inoperative any part of a device or element of design installed on or in a motor vehicle or motor veh icle equipment in compliance with an applicable motor vehicle safety standard." Thus, a person in any of these categories may not apply tint film that would cause the light transmittance of the glazing requisite for driving visibility to be under 70 perc ent.

You stated your belief that limousines that seat less than 10 persons may not be equipped with any sun screening or window tinting product, since such products would violate Standard No. 205. We wish to clarify one aspect of your statement. Limousines that seat less than 10 persons are considered "passenger cars" n1 under NHTSA's regulations. NHTSA considers all windows in a passenger car to be requisite for driving visibility; accordingly, all windows in a passenger car/limousine must have a minimum 70 percent light transmittance. However, please note that tinting may be used in these vehicles, provided the tinted windows meet the minimum 70 percent light transmittance requirement.

n1 The agency defines "passenger car" as a "motor vehicle with motive power, except a multipurpose passenger vehicle, motorcycle, or trailer, designed for carrying 10 persons or less." In turn, "multipurpose passenger vehicle" is defined as a "motor v ehicle with motive power, except a trailer, designed to carry 10 persons or less which is constructed on a truck chassis or with special features for occasional off-road operation." A "bus" is defined as a "motor vehicle with motive power, except a trail er, designed for carrying more than 10 persons."

You further asked whether a limousine that seats 10 or more persons is subject to the Federal window tinting requirements. A limousine with a capacity of more than 10 persons is considered a "bus" under our regulations. There are specific requirements in Standard No. 205 that apply to buses (or bus/limousines). Under these requirements, only the windshield and the windows to the immediate left and right of the driver are considered to be requisite for driving visibility (if they are equipped with dua l outside mirrors satisfying section S6.1 (b) of Standard No. 111), and thus subject to the minimum 70 percent light transmittance requirement. The windows to the rear of the driver in a bus/limousine, including the rear side and rear windows, are not r equired to meet the light transmittance requirement. Accordingly, Standard No. 205 does not prohibit the use of tinted glazing materials for bus/limousine windows to the rear of the driver when the vehicle is equipped with dual outside mirrors larger th an those usually used on passenger cars.

I hope you find this information helpful. If you have any other questions, please contact Mr. Marvin Shaw of my staff at (202) 366-2992.