NHTSA Interpretation File Search
Overview
NHTSA's Chief Counsel interprets the statutes that the agency administers and the standards and regulations that it issues. Members of the public may submit requests for interpretation, and the Chief Counsel will respond with a letter of interpretation. These interpretation letters look at the particular facts presented in the question and explain the agency’s opinion on how the law applies given those facts. These letters of interpretation are guidance documents. They do not have the force and effect of law and are not meant to bind the public in any way. They are intended only to provide information to the public regarding existing requirements under the law or agency policies.
Understanding NHTSA’s Online Interpretation Files
NHTSA makes its letters of interpretation available to the public on this webpage.
An interpretation letter represents the opinion of the Chief Counsel based on the facts of individual cases at the time the letter was written. While these letters may be helpful in determining how the agency might answer a question that another person has if that question is similar to a previously considered question, do not assume that a prior interpretation will necessarily apply to your situation.
- Your facts may be sufficiently different from those presented in prior interpretations, such that the agency's answer to you might be different from the answer in the prior interpretation letter;
- Your situation may be completely new to the agency and not addressed in an existing interpretation letter;
- The agency's safety standards or regulations may have changed since the prior interpretation letter was written so that the agency's prior interpretation no longer applies; or
- Some combination of the above, or other, factors.
Searching NHTSA’s Online Interpretation Files
Before beginning a search, it’s important to understand how this online search works. Below we provide some examples of searches you can run. In some cases, the search results may include words similar to what you searched because it utilizes a fuzzy search algorithm.
Single word search
Example: car
Result: Any document containing that word.
Multiple word search
Example: car seat requirements
Result: Any document containing any of these words.
Connector word search
Example: car AND seat AND requirements
Result: Any document containing all of these words.
Note: Search operators such as AND or OR must be in all capital letters.
Phrase in double quotes
Example: "headlamp function"
Result: Any document with that phrase.
Conjunctive search
Example: functionally AND minima
Result: Any document with both of those words.
Wildcard
Example: headl*
Result: Any document with a word beginning with those letters (e.g., headlamp, headlight, headlamps).
Example: no*compl*
Result: Any document beginning with the letters “no” followed by the letters “compl” (e.g., noncompliance, non-complying).
Not
Example: headlamp NOT crash
Result: Any document containing the word “headlamp” and not the word “crash.”
Complex searches
You can combine search operators to write more targeted searches.
Note: The database does not currently support phrase searches with wildcards (e.g., “make* inoperative”).
Example: Headl* AND (supplement* OR auxiliary OR impair*)
Result: Any document containing words that are variants of “headlamp” (headlamp, headlights, etc.) and also containing a variant of “supplement” (supplement, supplemental, etc.) or “impair” (impair, impairment, etc.) or the word “auxiliary.”
Search Tool
NHTSA's Interpretation Files Search
| Interpretations | Date |
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ID: nht87-3.21OpenTYPE: INTERPRETATION-NHTSA DATE: 11/05/87 FROM: AUTHOR UNAVAILABLE; Erika Z. Jones; NHTSA TO: Patterson Incorporated TITLE: FMVSS INTERPRETATION TEXT: Mr. Barry Patterson President Patterson Incorporated 1920 Springfield Road Kelowna, B.C. VlY 7R8 Dear Mr. Patterson: This is in reply to your letter of September 21, 1987, asking for our "acceptance and recommendation" of a safety device "endorsed" by the government of the province of Saskatchewan. This device automatically activates parking lamps, and the lower beams of headlamps "with the touch of the Brake Pedal". The National Highway Traffic Safety Administration has no authority to accept, recommend, or endorse any item of motor vehicle equipment. We can, however, discuss the relationship of your device to U.S. Federal Motor Vehicle Safety Standard No. 109, Lamp Reflective Devices, and Associated Equipment, and the National Traffic and Motor Vehicle Safety Act ("the Act") under which the standard was issued. This standard applies to the manufacture and sale of new motor vehicles. A device such as yours is permi ssible as original vehicle equipment as long as it does not impair the effectiveness of lighting equipment required by Standard No. 108. There is no indication in your descriptive literature that the effectiveness of packing lamps, headlamps, or the stop lamps would be impaired by the installation and operation of your device. With respect to sale in the aftermarket for vehicles in use, your device is not prohibited under the Act if its installation by a person other than the vehicle owner does not rend er inoperative in whole or in part any lamps installed to comply with Standard No. 108. We see no indication that this would occur. However, such an installer should be aware of the wiring requirement in Standard No. 108 that taillamps, parking lamps, si de marker lamps, and the license plate lamp shall be activated when the headlamps are on. The rules for operation of vehicles in use are established by the individual States, and several of these may have restrictions on the use of headlamps during daylight hours. For further information on this subject you should write the American Associati on of Motor Vehicle Administrators, 1201 Connecticut Ave., N.W., Washington, D.C. 20036. This agency has proposed that motor vehicles be equipped with daytime running lights, in a manner similar, though not identical, to the new requirement of the Canadian Ministry of Transport. If this proposal is adopted, the Act would prohibit any State f rom having a different standard than the Federal one. As of the effective date of such an amendment to Standard No. 108 daytime operation of frontal lighting should be permissible in all States. If you have any further questions we will be pleased to answer them. Sincerely, Erika Z. Jones Chief Counsel |
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ID: nht90-3.31OpenTYPE: INTERPRETATION-NHTSA DATE: 07/25/90 FROM: JEFF CORNELL -- ENGINEERING, THE BARGMAN COMPANY TO: TAYLOR VINSON -- LEGAL COUNSEL, NHTSA TITLE: NONE ATTACHMT: ATTACHED TO LETTER DATED 8-23-90 TO J. CORNELL FROM P. J. RICE; (A36; STD. 108); ALSO ATTACHED TO DOCUMENT SEARCH REPORT (INFORMATION OMITTED) TEXT: My company manufactures lighting products for recreational vehicle manufacturers, OEM's. Due to recent customer requests, we are asking for a clarification on the following FMVSS 108 changes published May 15, 1990. S5.1.1.31 (amended) states: On a motor vehicle, except a passenger car, whose overall width is 80 inches or more, measurements of the functional lighted lens area, and of the photometrics, of a multiple compartment stop lamp, and a multiple compartment turn signal lamp, shall be made for the entire lamp and not for the individual compartments. Prior to this change, the maximum values increased as the number of lighted compartments Increased. As the new change states above, the photometric requirements are to be on the entire light, does this include the maximums also? If this is the case, a single compartment light must be less than the 300 maximum candlepower, and a 5 compartment light would also need to be less than the 300 value. This was addressed in the second full paragraph on page 20159 of the Federal Register for the minimum requirements, but there is no reference to the maximums. Please clarify. Here is an example of another question we have: Let's say a manufacturer is purchasing a single compartment light, that does not meet the new lens area requirement, for use in a molded bumper or fiberglass cap. If he is using 3 of these lights per side as stop lamps, and the combined area of the 3 is greater than the 75 square centimeters (from SAE J1398 MAY85), is this legal per the new requirements? Along the same line, If the vendor making these lights mounts the individual lights in a molded housing, are we correct in assuming that this would now classify as a multiple compartment lamp? If adding a housing to these lights will make it a multiple compartment lamp, then how is it different if it is installed into a molded bumper or fiberglass cap? At the beginning of the amendment in the summary, it states that the lens area is 12 square inches, however, in the SAE standard J1398 MAY85 it states 75 square centimeters. When the two areas are converted into like units they do not match up. Which area is correct? (75 square centimeters = 11.625 square inches, 12 square inches = 77.42 square centimeters). We would appreciate your earliest response, as we have customers waiting for answers concerning the above items. |
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ID: nht90-4.60OpenTYPE: Interpretation-NHTSA DATE: November 13, 1990 FROM: M. Iwase -- General Manager, Technical Administration Dept., Koito Manufacturing Company TO: Paul Jackson Rice -- Chief Counsel, NHTSA TITLE: Re FMVSS No. 108 (Lamp, reflective devices, and associated equipment) Photometric Measurement Procedures for L.E.D. CHMSL ATTACHMT: Attached to letter dated 12-17-90 to M. Iwase from Paul Jackson Rice (A37; Std. 108) TEXT: We would hereby ask you to provide us with your kind advice concerning photometric measurement procedures for L.E.D. center high-mounted stop lamps (CHMSL). Photometric output of L.E.D. lighting device decreases as the time passes after activation, as shown in Figure 1. This is caused by the thermal characteristic of L.E.D. discrete itself. Our question is about the timing of photometry when the photometri c output of L.E.D. CHMSL should be measured for the verification of compliance with the photometric requirements of FMVSS No. 108. It is reasonable that it shall be measured when 5 minutes has elapsed after the lamp is energized, with the following reas ons, we think; (1) Our real-car field test has been performed to see how often and how long foot brake application (stop lamp operation) is raised during actual driving in the certain urban area. As the result of our field test, it was found that the c ontinuance is for 5 minutes at best for our brake application (refer to Figure 2). (2) Section 3.1.5.3 "Photometric Minumums" in SAE J1889 JUN88 specifies, as follows; Photometric Minumums: For measurements to photometric minimum requiments, the test "device light output shall first be stabilized by energizing the device at laboratory ambient temperature (23 +/- 5 degrees C) until either internal he at builtup saturation has occured or 30 minutes has elapsed, whichever occurs first. This provision is true of steady burn lamps, for example tail lamp, parking lamp, etc., however not true of stop lamp which is energized during just the period of service brake operation. (3) S4.8 "Warpage Test on Devices with Plastic Components" and Table 1 "Cycle Time (Min)" in SAE J575 JUL83 specifies 5-on/5-off operating cycle for stop lamps. Whether could our interpretation above-mentioned be legally accepted? Upon your kind review, your prompt reply would be highly appreciated. Attachment Figure 1. Photometric Output Of L.E.D. And Incandescent Bulb (Graph Omitted) Figure 2. Brake Application Period (Graph Omitted) Test Method: Three (3) vehicles (A, B and C) chosen at random were chased and measured brake application periods. Date: January 10, 1990 Location: Urban area (in Nagoya city) Remark: Each test data of three vehicles is continuous, namely Vehicle A was measured the brake application for 72 minutes, and Vehicle B and C were measured for 24 minutes, respectively. |
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ID: 23532.ztvOpen Mr. Daniel Watt Dear Mr. Watt: This is in reply to your email of August 22, 2001, to Michael Cole of this agency. You related having seen trucks using light emitting diodes (LEDs) instead of incandescent bulbs for their taillamps, and asked whether "red LEDs installed in place of a bulb [in] a clear taillight meet the color 'red' requirements. Or would that be a non-compliance because the housing was not certified for use with LEDs?" Under Federal law, lighting equipment on motor vehicles must be designed to comply with 49 CFR 571.108 Standard No. 108, Lamps, Reflective Devices, and Associated Equipment. The manufacturer of the vehicle then certifies that the vehicle complies with all applicable Federal motor vehicle safety standards including Standard No. 108. The original rear lamps on the trucks that you saw were equipped with incandescent bulbs. Paragraph S5.8.1 of Standard No. 108 specifies that "each lamp, reflective device, or item of associated equipment manufactured to replace any lamps, reflective device, or item of associated equipment on any vehicle to which [Standard No. 108] applies shall be designed to conform to this standard." This means that a replacement item must be designed to conform to the standard in the same manner as the vehicle manufacturer certified compliance with the original equipment installed. A rear replacement lamp equipped with LEDs would not be designed to conform to the standard in the same manner as the original equipment, and would therefore not comply with S5.8.1. Whether it is legal to use replacement equipment such as the LEDs on the public roads is not a matter of Federal law but of State law. We are not conversant with state laws and cannot advise you about this. You might want to contact the California Department of Highway Patrol for its views on this subject. Substituting LEDs into a lamp that was designed to incorporate incandescent light sources raises safety concerns. An incandescent light source emits light when an electric current passes through a resistant metallic wire (filament). The position and shape of the filament, along with other design elements, define the unique electrical and photometric characteristics of the light source. Lamp designers incorporate these characteristics into the original optical design of the lamp. Thus, substitution of the original light source with one of a different design may negatively impact the photometric performance of a lamp below the minimum required for compliance with Standard No. 108. In addition, other functions required by Standard No. 108 may be affected by substitution of an LED, such as operation of the illuminated turn signal pilot indicator (S5.5.6). Sincerely, John Womack ref:108 |
2002 |
ID: 86-2.25OpenTYPE: INTERPRETATION-NHTSA DATE: 04/21/86 FROM: AUTHOR UNAVAILABLE; Erika Z. Jones; NHTSA TO: Dave Trowbridge TITLE: FMVSS INTERPRETATION TEXT:
Mr. Dave Trowbridge Aftermarket Sale Creation Windows of Indiana, Inc. P.O. Box 1046 Elkhart, Indiana 46515
Dear Mr. Trowbridge:
This is in reply to your letter of February 25, 1986, with reference to a design for a center high-mounted stop lamp intended for pickup covers or shells. You have asked for our advice regarding the applicability of Federal motor vehicle safety standards. The center high-mounted stop lamp is required only on passenger cars, and its specifications apply only to original or replacement equipment on cars manufactured on or after September 1, 1985. There are no requirements for aftermarket applications such as you envision. The legality of your device would be determined under the laws of a State where the lamp is installed or used. We would recommend, however, that you attempt to conform your device as closely as possible to Federal requirements, such as an illuminated lens area of not less than 4 square inches, and mounted in such a manner as to minimize reflections in the rear glass. A copy of the Federal standard is enclosed.
I hope that this answers your questions. We appreciate your interest in motor vehicle safety.
Sincerely,
Erika Z. Jones Chief Counsel
Enclosure
February 25, 1986 Office of Chief Counsel National Highway Traffic Safety Assn. 400 7th Street Southwest Washington, DC 20590
Gentlemen:
We are manufacturers of custom windows and doors for the recreational vehicle market, automotive aftermarket and second party vehicle manufacturers. Of particular concern is our production and design of the "3rd stop light" to our door assemblies for pickup cover doors (see attached).
Our doors are supplied to manufacturers of these covers or shells and will be supplied with this added safety feature. Your assistance, at your earliest possible convenience, is appreciated in advance regarding those pertinent and applicable NHTSA, FMVSS or other specifications that may apply to the mounting of this light assembly to the inside of the door assemblies we manufacture for our customers. The light assembly itself will be either sourced or manufactured with concern for those specifications that may apply to the light and its visibility, wiring, etc. Cordially, Dave Trowbridge Aftermarket Sales
DT/jb
Attachment |
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ID: GF006472OpenMr. Jim Haigh Dear Mr. Haigh: This responds to your e-mail regarding installation of certain auxiliary lighting on school buses. Specifically, you ask whether installing a "Driver Alert Device" on school buses, which you state has been mandated by the State of Alabama, conflicts with Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Lamps, reflective devices and associated equipment. Your e-mail and your web site (www.transpecworldwide.com/products/driver_alert.htm) explain that the "Driver Alert Device" is an LED message board mounted on the school bus emergency door that is wired to flash the word "Caution" when the school bus is backing up. The device is also wired into the eight-lamp school bus warning lamp system. When the amber lamps of the system are activated, the LED sign alternately flashes "Caution-Stopping". When the red lamps of the system are activated, the sign flashes "Stop" or "Do not Pass". First, S5.5.10 of FMVSS No. 108 generally requires that all lamps, including auxiliary lighting, must be steady burning, unless otherwise specifically permitted. Your message board does not fall under any exception enumerated in S5.5.10. Second, S5.1.3 of FMVSS No. 108 prohibits additional lighting devices that impair the effectiveness of lamps required by FMVSS No. 108. The agency interprets the standard as generally prohibiting electronic message boards because they have the potential of impairing the effectiveness of required lighting (see August 4, 1997 letter to Mr. Alan Robinson). However, with respect to school buses equipped with flashing electronic message boards, we do not prohibit them because we believe that under certain local conditions, an electronic message board could enhance the safety of school bus passengers. That is, we defer to the States with respect to the narrow issue of prescribing or prohibiting electronic message boards on school buses. We caution that this interpretation is limited to electronic message boards on school buses. For example, the agency recently explained that our standards would prohibit a flashing red lamp located on the roof of a school bus, because it had the potential of impairing the effectiveness of the required lighting (see 5/22/03 letter to J. Adam Krugh IV). Further, electronic message boards must be located far enough away from the required lighting so as to minimize any potential impairment. If you need further assistance, please contact George Feygin of my staff at this address or at (202) 366-2992. Sincerely, Stephen P. Wood 2 Enclosures NCC-112:Gfeygin:mar:11/2/05:62992:OCC 006472 |
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ID: 8513Open Mr. Carl W. Ruegg Dear Mr. Ruegg: This responds to your letter of March 27, 1993, to Mr. Eisner of the General Counsel's Office of the Department of Transportation (DOT). You intend to import "car parts" into the United States, and would like to know "the legal definition of a vehicle that comes within the scope of D.O.T. regulations". You assume that "a part such as fender or other body parts do not." You have asked this question because some individual parts may arrive as part of assemblies, such as "chassis and body assembly or perhaps chassis and body plus front & rear axle transmissions." The National Highway Traffic Safety Administration (NHTSA) is the component of DOT that regulates the importation of motor vehicles and motor vehicle equipment, principally through the National Traffic and Motor Vehicle Safety Act and regulations issued under its authority such as the Federal motor vehicle safety standards (FMVSS). Each part or component of a motor vehicle is motor vehicle equipment subject to NHTSA's jurisdiction. The Act requires that motor vehicle equipment, whether new or used, meet all applicable FMVSS in order to be imported into the U.S. Some of the FMVSS apply to items of motor vehicle equipment. Thus, whether shipped separately or as part of an assembly, equipment such as brake hoses, tires, brake fluid, rims for vehicles other than passenger cars, glazing, seat belt assemblies, and wheel covers must comply in order to be admitted into this country. As your question implies, there is a point at which an assemblage of motor vehicle equipment becomes a "motor vehicle". An assemblage becomes an "incomplete motor vehicle" subject to regulation as a vehicle manufactured in two or more stages (49 CFR Part 568) when it consists, at a minimum, of "frame and chassis structure, power train, steering system, suspension system, and braking system, to the extent those systems are to be part of the completed vehicle, that requires further manufacturing operations . . . to become a completed vehicle (Sec. 568.3)." As the intention is to import the vehicle without the electric power train, the assemblage you contemplate is not a "motor vehicle" and remains an assemblage of motor vehicle equipment whose individual components, as noted in the preceding paragraph, are required to comply with the applicable FMVSS. Your letter informs us that "[t]hese parts and partial assembly's (sic) would be sold as kits for conversion to electric vehicle." When the power train is added, the person completing the manufacture of the vehicle is considered to be its manufacturer, required to certify compliance with all applicable FMVSS. If you have any further questions, we would be pleased to answer them. Sincerely,
John Womack Acting Chief Counsel ref:591#568#VSA d:5/18/93 |
1993 |
ID: 7169-3Open Mr. Charles Chun Dear Mr. Chun: This responds to your letter of April 1, 1992, requesting an interpretation of section S5 of Federal Motor Vehicle Safety Standard No. 214, Side Impact Protection. You asked two questions, which I have answered below. First, you asked about the meaning of "manufactured date," in connection with cars that would be produced at your factory in Korea and imported into the United States. Specifically, you asked whether the "manufactured date" would be the date of production at the Kia factory or the date of U.S. customs clearance. For purposes of S5 of Standard No. 214 and all the rest of the Federal motor vehicle safety standards, the date of manufacture is the date on which the assembly and other manufacturing operations are completed for a motor vehicle. See 49 CFR Part 571.7 and 49 CFR Part 567.4(g)(2) and (5). Therefore, the "manufactured date" for the your company's vehicles would be the production date at the Kia factory in Korea. Second, you asked whether "manufactured date," as used in S5 of Standard No. 214, has the same meaning as "model year." The answer is no. The term "model year" is defined in 49 CFR Part 565.3(h) as "the year used to designate a discrete vehicle model irrespective of the calendar year in which the vehicle was actually produced, so long as the actual period is less than two calendar years." As explained above, the concept of "manufactured date" refers to the actual date on which manufacturing operations are completed on a vehicle, not a year designation chosen by the manufacturer. Please note that the minimum percentage phase-in requirements for Standard No. 214's dynamic requirements are based on annual production periods and not model years. See, for example, S8.1 to S8.1.1 of Standard No. 214. A manufacturer's annual production of passenger cars manufactured on or after September 1, 1993 and before September 1, 1994 would include all passenger cars completed during that time. The annual production period for purposes of the Standard No. 214 phase-in would not be based on the number of passenger cars which the manufacturer chose to designate as model year 1994 cars. I hope the above information is responsive to your inquiry. Should you have any further questions or need any additional information regarding this matter, please feel free to contact Mr. Walter Myers of my staff at this address or by telephone at (202) 366-2992. Sincerely,
Paul Jackson Rice Chief Counsel ref:214#571#567 d:5/22/92
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1992 |
ID: 77-2.46OpenTYPE: INTERPRETATION-NHTSA DATE: 06/03/77 FROM: AUTHOR UNAVAILABLE; Joseph J. Levin Jr.; NHTSA TO: E.D. Etnyre & Co. TITLE: FMVSR INTERPRETATION TEXT: This responds to your March 30, 1977, letter asking whether the rebuilding of a motor vehicle with all new running gear and an old body constitutes the manufacture of a new motor vehicle requiring compliance with Federal regulations. In the rebuilding operation you describe, you retain the old body tank structure while replacing the entire running gear assembly. The National Highway Traffic Safety Administration (NHTSA) has determined by regulation in 49 CFR 571.7(f) that the rebuilding of a motor vehicle using old running gear with a new body does not constitute the manufacture of a new motor vehicle. The vehicle will be considered newly manufactured unless, at a minimum, the trailer running gear assembly is not new and was taken from an existing trailer whose identity is continued with respect to the Vehicle Identification Number. In addition, the trailer must be owned or leased by the same party both before and after the remanufacture. Since the running gear with which you plan to equip your vehicle is new, your operation constitutes the new manufacture of a vehicle. You ask secondly what portion of the running gear can be replaced as normal repairs without such replacement being considered the manufacture of a new vehicle. You may replace any part of the running gear assembly that breaks or malfunctions during operation of the motor vehicle. The NHTSA would consider this to be normal maintenance of the vehicle, not subject to the requirements applicable to vehicle manufacture. SINCERELY, E.D. ETNYRE & CO. March 30, 1977 U.S. Department of Transportation National Highway Traffic Safety Administration Attention: Legal Counsel We are manufacturers of tank type truck bodies and trailers with running gear. On a somewhat irregular basis, we receive requests from users of this equipment to perform certain repairs. Our specific question at this time relates to repairs done to the running gear of trailers and whether an involvement with 49CFR 571.7(f) concerning new and used components is incurred.
1. If the present tank structure and upper fifth wheel coupler are reused in conjunction with a totally new running gear assembly, is the vehicle still a used vehicle for the purpose of the applicability ruling regarding conformance to federal regulations? 2. If the preceding answer is no, what portion of the running gear - wheels, axles, brakes and suspension - can be replaced as normal repairs without changing the status to "new"? For the purpose of this inquiry the vehicle identification is continued and ownership is retained. Jackson Decker Chief Product Engineer |
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ID: 1984-1.21OpenTYPE: INTERPRETATION-NHTSA DATE: 03/09/84 FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA TO: Comfort-Tour Cycle Products TITLE: FMVSS INTERPRETATION TEXT:
Mr. Daniel J. Roberson Comfort-Tour Cycle Products 8724 116th Avenue, N. E. Kirkland, WA 98033
Dear Mr. Roberson:
This responds to your letter of November 29, 1983, to the Office of Vehicle Safety Compliance, which was forwarded to this office for reply, concerning the legal requirements regulating the manufacture of motorcycle windshields. You requested information on how you as a manufacturer may obtain certification of your product under the National Traffic and Motor Vehicle Safety Act.
The National Highway Traffic Safety Administration (NHTSA) has the authority to govern the manufacture of new motor vehicles and motor vehicle equipment, and pursuant to the National Traffic and Motor Vehicle Safety Act we have promulgated Federal Motor Vehicle Safety Standard No. 205 (FMVSS No. 205), Glazing Materials. FMVSS No. 205 incorporates by reference the American National Standard "Safety Code for Safety Glazing Materials for Glazing Motor Vehicles operating on Land Highways," Z26.6-1966 (ANS Z26). These requirements include specifications for performance and location requirements for glazing used in vehicles and motorcycles, such as minimum levels of light transmittance and abrasion resistance. Copies of FMVSS No. 205 and ANS Z26 have been enclosed in the letter sent to you by the Office of Vehicle Safety Compliance dated January l0, 1984.
You should be aware that the NHTSA does not pass approval on the compliance of any vehicle or equipment with a safety standard before the actual events that underlie certification. Under the Vehicle Safety Act, it is your responsibility as a manufacturer to determine whether your windshields comply with all applicable safety standards and regulations, and to certify your products in accordance with that determination.
There are other regulations and standards affecting manufacturers of motor vehicle equipment of which you should be aware. For instance, manufacturers of motor vehicle equipment have specific responsibilities under the National Traffic and Motor Vehicle Safety Act regarding safety-related defects in their products. Sections 151 et seq. of the Act a copy of which is enclosed, requires manufacturers to notify purchasers about safety-related defects in their product and to remedy such defects without charge. In addition, Part 556 requires vehicle and equipment manufacturers to provide the agency with certain information concerning themselves and the products they manufacture. I am enclosing an information sheet explaining how you can obtain copies of the agency's regulations. You should refer to the Act and its implementing regulations in order to understand the extent of your responsibilities as a manufacturer of motor vehicle equipment. Sincerely,
Frank Berndt Chief Counsel
Enclosure |
Request an Interpretation
You may email your request to Interpretations.NHTSA@dot.gov or send your request in hard copy to:
The Chief Counsel
National Highway Traffic Safety Administration, W41-326
U.S. Department of Transportation
1200 New Jersey Avenue SE
Washington, DC 20590
If you want to talk to someone at NHTSA about what a request for interpretation should include, call the Office of the Chief Counsel at 202-366-2992.
Please note that NHTSA’s response will be made available in this online database, and that the incoming interpretation request may also be made publicly available.