
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: 86-4.10OpenTYPE: INTERPRETATION-NHTSA DATE: 07/09/86 FROM: AUTHOR UNAVAILABLE; Erika Z. Jones; NHTSA TO: Rolf Seiferheld TITLE: FMVSS INTERPRETATION TEXT:
Service & Technical Bitter Automobile of America, Inc. 401 Willowbrook Lane West Chester, PA 19380
Dear Mr. Seiferheld:
This responds to your letter asking about 49 CFR Part 581, Bumper Standard. We apologize for the delay in our response. You stated that you are considering integrating fog-taillight assemblies in the rear bumper of a car and asked about relevant requirements. You noted in your letter that section S4.1.3 of Federal Motor Vehicle Safety Standard No. 108 (49 CFR 571.108) states that "(n)o additional lamp, reflective device, or other motor vehicle equipment shall be installed that impairs the effectiveness of lighting equipment required by this standard." You stated that this paragraph seems to be relevant but that it is unclear to you. Both Part 581, Bumper Standard, and Safety Standard No. 108, Lamps, Reflective Devices( and Associated Equipment, are relevant to the location of fog-taillamp assemblies in the rear bumper. Fog lamps are lighting devices that are not covered by Standard No. 108. Therefore, two questions must be asked: are they permissible, and if so, may they be combined with items of lighting equipment required by Standard No. 108. Under section S4.1.3, quoted above, fog lamps are permissible provided that they do not impair the effectiveness of the lighting equipment that the standard requires. In this instance, the question cannot be answered without reference to whether its combination with the taillamp is permitted, for from the photo and drawing submitted, both appear combined in a single housing incorporating, we assume, one filament for each function. Both lamps are "position lamps", indicating the presence of the vehicle in the roadway ahead to a driver who is following behind. The fog lamp is intended to be activated under extreme conditions of reduced visibility, and hence, would appear to increase the effectiveness of the taillamp rather than impair it. Section S4.4 of Standard No. 108 prohibits combining taillamps only with clearance lamps (not required lighting equipment for passenger cars), and thus combining the taillamp and fog lamp functions are permissible. Section S4.3.1.1 of the standard specifies, among other things, that no part of the vehicle may prevent a taillamp from meeting its photometric output at specified test points. Further, a taillamp located in the bumper must also meet the visibility requirements of SAE Standard J585e Tail Lamps (Rear Position Lamps), September 1977, incorporated by reference in Standard No. 108. Pursuant to Paragraph 4 of J585e taillamps must be visible through a horizontal angle from 45 degrees to the left to 15 degrees to the right; to be considered visible, the lamp must provide an unobstructed projected illuminated area of outer lens surface (excluding reflex), not less than 2 square inches measured at 45 degrees to the longitudinal axis of the vehicle.
Finally, Part 581 Bumper Standard specifies requirements for the impact resistance of vehicles in low speed front and rear collisions. Vehicles must be capable of meeting certain damage criteria, following specified test impacts. Among other things, lamps must be free of cracks and comply with applicable visibility requirements of section S4.3.1.1 of Standard No. 108 following the impacts.
I hope this information is helpful.
Sincerely,
Erika Z. Jones Chief Counsel
November 18, 1985
Chief Counsel Jeff Miller National Highway Traffic Safety Administration 400 7th St., Southwest NASSIF Bld., Rm. #5219 Washington, D.C. 20590
RE: CFR 49, PART 581 BUMPER STANDARD
Dear Mr. Miller:
This is an Informal inquiry concerning the above referenced subject. Bitter Automobile of America, Inc. is the national importer of the Bitter SC automobile.
This Inquiry is in regard to the configuration of the rear bumper assembly of our automobile. In the past we have had a full face bumper bar without any light assemblies incorporated. However, I have been asked by Bitter K.G. GmbH Engineering staff what the regulations are of incorporating fog-taillight assemblies in the bumper; e.g. integrated into the rear bumper (see attached photograph and drawing). In consulting the Motor Vehicle Standard, No. 108, Part 571; S 108-7 , S 4.1.3, it states:
"No additional lamp reflective device or other motor vehicle equipment shall be installed that impairs the effectiveness of lighting equipment required by this standard."
This paragraph seems to relate to what we are contemplating, but is not clear to me. I kindly ask if the above could be feasible to change to a new style bumper.
I hope to hear from you soon and thank you for your time. Sincerely,
Rolf Seiferheld Service & Technical
Enclosures
RS/red |
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ID: 86-4.11OpenTYPE: INTERPRETATION-NHTSA DATE: 07/11/86 FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA TO: CONNIE HAFENSTINE -- CHIEF, BUREAU OF PERSONNEL SERVICES; NOBLE MORRELL -- ASSISTANT PERSONNEL DIRECTOR KANSAS DEPARTMENT OF TRANSPORTATION TITLE: NONE TEXT: Dear Ms. Hafenstine and Mr. Norrell: This responds to your February 19, 1986, letter to the National Highway Traffic Safety Administration (NHTSA) concerning a school district's modification of its 1985 school bus to accommodate a handicapped student. You asked for our opinion on the district's plan to remove the bench seat located directly behind the driver's seat. This modification is proposed in order to provide necessary leg room for a handicapped child who would occupy the bench seat rearwards of the removed seat. While you explained that the work on the school bus would probably be performed by the school district itself, you requested us to clarify our requirements for commercial parties modifying used vehicles. The National Traffic and Motor Vehicle Safety Act, which authorizes NHTSA to issue safety standards applicable to the manufacture and sale of new motor vehicles, includes section 108(a)(2)(A) regulating the modification of safety systems on used motor vehicles. Section 108(a)(2)(A) prohibits a manufacturer, distributor, dealer, or motor vehicle repair business from knowingly rendering inoperative any device or element of design installed in a motor vehicle in compliance with an applicable Federal motor vehicle safety standard. This means that Federal law would prohibit a commercial business from degrading or removing the level of safety provided by the equipment or designs of your school bus. You explained that your school bus was certified as meeting our "compartmentalization" requirements for school bus passenger protection. Compartmentalization provides occupant protection by seat spacing, padding and strength requirements. It is therefore likely that removing a school bus seat would render inoperative the vehicle's compliance with the requirements for compartmentalization since school bus seats are central to that system of occupant protection. As a result, a commercial business would violate @ 108(a)(2)(A) by removing the bench seat in question if no properly padded restraining device were provided within the distance specified in Standard No. 222 for seat spacing. Violation of @ 108(a)(2)(A) is subject to a maximum civil penalty of $ 1,000 for each violation. NHTSA is aware that situations may exist where a vehicle must be modified by a commercial facility to accommodate the special needs of a handicapped person. We have been willing to consider some of those modifications and resultant violations of @ 108(a)(2)(A) as being justified by public need, and have exercised our discretion not to take any enforcement action. Such an exception would be made in your situation if removing the school bus seat were necessary to accommodate a student's physical handicaps. However, we urge you to label the bench seat rearward of the removed seat in some manner that will identify it as appropriate only for transporting a handicapped student and distingush it from a regular school bus seat. Further, if the seat would be capable of being used by other school children, we strongly recommend that a mode of occupant protection be provided to all occupants of the seat, and that the level of protection is as safe as that originally provided by the school bus before the modification was made. Section 108(a)(2)(A) applies only to commercial-type businesses which modify used vehicles. It does not apply to an owner, such as a state or a school district, modifying its own vehicles. Accordingly, Federal law would not prohibit the school district from removing the bench seat on its school bus nor restrict the removal in any manner. Again, however, we do strongly recommend that you ensure that the bench seat rearward of the removed seat is labeled and that an appropriate mode of occupant protection is provided to all children who would occupy it. The modification of the bus would, of course, still have to comply with any applicable state laws. You should contact your attorney and insurance company to discuss the effect of state law on your modification as well as private liability issues, since your planned modification might affect the vehicle's compliance with safety standards. I hope this information is helpful. If you have further questions, please contact my office. Sincerely, |
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ID: 86-4.12OpenTYPE: INTERPRETATION-NHTSA DATE: 07/11/86 FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA TO: FRANCISCO DEE TAN -- PRESIDENT FRG INDUSTRIAL CORPORATION TITLE: NONE TEXT: Dear Mr. Tan: This is in reply to your letter of April 15, 1986, asking for our approval of different types of rear stop lamps you wish to import. The lighting devices depicted in the brochures that you enclosed are not intended as original or replacement motor vehicle equipment, and therefore are not coverd by Federal Motor Vehicle Safety Standards No. 108, Lamps, Reflective Devices, and Associated Equipment. If you are required to execute a Form HS-7 at the time of entry, the proper declaration is that provided by Box 1: the equipment was manufactured on a date when no Federal standards applied to it. In any event, this agency has no authority to approve or disapprove items of motor vehicle equipment since the National Traffic and Motor Vehicle Safety Act provides for self-certification by manufacturers of their products subject to Federal standards. In the absence of Federal requirements, whether the devices you wish to import are legal for installation and use would be determinable under the laws of the individual States where the devices will be sold and installed. I hope that this answers your question. Sincerely |
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ID: 86-4.13OpenTYPE: INTERPRETATION-NHTSA DATE: 07/15/86 FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA TO: JAMES J. DABROWSKI -- REGULATIONS STATISTICS COORDINATOR JAGUAR CARS TITLE: NONE ATTACHMT: LETTER DATED 06/12/86, TO ERIKA Z. JONES, FROM JAMES J. DABROWSKI, OCC - 0838; RECALL LETTER TO GRAY MARKET VEHICLE OWNERS FROM JAGUAR CARS INC AND RELEASE DOC, DATED 06/12/86 EST TEXT: Dear Mr. Dabrowski: This is in reply to your letter of June 12, 1986, asking for confirmation that "Jaguar Cars is not bound by normal NHTSA recall procedures" with reference to cars imported through the Gray Market. The National Traffic and Motor Vehicle Safety Act requires that a manufacturer must provide notification and remedy, when the determines that a vehicle or an item of motor vehicle equipment "manufactured by him" contains a safety related defact or noncompliance with an applicable standard. (15 U.S.C. 1411). A "manufacturer" is defined under the Act as "any person engaged in the manufacturing or assembling of motor vehicles..., including any person importing motor vehicles... for resale." (15 USC 1391(5)). We understand Jaguar Cars, Inc. to be a corporation incorporated in the United States for the purpose of importing and selling motor vehicles that are made in another country by another legal entity. Because it does not manufacture or assemble motor vehicles, Jaguar Cars, Inc., is responsible as a "manufacturer" for notification and remedy only for the motor vehicles that it has imported. I hope that this clarifies the matter for you. Sincerely, |
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ID: 86-4.14OpenTYPE: INTERPRETATION-NHTSA DATE: 07/16/86 FROM: DALTON G. FEAGLER TO: ADMINISTRATOR -- NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION DEPARTMENT OF TRANSPORTATION TITLE: NONE ATTACHMT: ATTACHED TO LETTER DATED 12/22/86 TO DALTON G. FEAGLER FROM ERIKA Z. JONES, REDBOOK A29 (4); STD 108, VSA 108 TEXT: Dear sir or madam: Reference is made to 49 CFR 571, Motor Vehicle Safety Standard 108, Docket No. 69-18, revised May 22, 1985. Particular reference is made to paragraph S4.5.4, which is quoted: "The stoplights on each vehicle shall be activated upon application of the service brakes. The high-mounted stoplamp on each passenger car shall be activated only upon application of the service brakes." Living in metropolitan Atanta, Georgia, and its highly congested traffic, I soon learned that rear-end collisons, and resulting whip-lash injuries, are to be avoided. I resolved to decrease those possibilities. In short, I've come up with a switching device which activates the stoplights of a vehicle the moment pressure is released from the accelerator. This is installed without disconnecting, or altering, any functions or systems; the device merely accelerates, by approximately three-quarters of a second, the warning of deacceleration and stopping. Further, this advanced warning increases the safe stopping distance. We do not alter any of the vehicle's functions; the stoplamps of the vehicle remain activated upon application of the service brakes. We believe our device, known as the "Dee-Tailer", fully complies with cited Standard 108. Would your agency desire to road-test our device? Before proceeding further, we desire your asessment and comments. Awaiting your early reply. Sincerely, |
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ID: 86-4.15OpenTYPE: INTERPRETATION-NHTSA DATE: 07/16/86 FROM: DONALD E. STEPHENS JR. TO: ERIKA Z. JONES -- NHTSA TITLE: NONE ATTACHMT: ATTACHED TO LETTER DATED 08/22/86, TO Donald E. Stephens to Erika Z. Jones TEXT: Dear Ms. Jones: Thank you very much for your letter dated June 20, 1986. And the interpretation of Kit car. I will explain more what I had in mind so you canunderstand my particular case. What I mean with homebuilt is that purchase the plans from a CO. like Home Mechanics and I build my own car. In this case what I do it purchase a chasis of a Spitfire and take of it's body and engine. I will manufacture my own body out of fiberglass and urethane foam. Then I will put a Kubota garden tractor diesel engine and that's it. The reason I will like to build this car because of the exitement of building my own car and learn more about cars. Also it's very good on gas mileage going 35 m.p.h. it gets 128 miles per gallon, but it can go lot faster than that. Diesel is better on gas mileage than gasoline engine. And the diesel does not need the maintenance of gasoline engine needs. If more people thought like me maybe we will not have worry about an Arab oil ambargo and this can be a lot safer than a motorcycle. I do not know all the fuss of the D.O.T. in Washington about safety when motorcycles are a lot more dangerous than these kinds of cars. I cannot believe the laws of Kansas if you are older than 18 yrs. old you do not have to ware a helmet while riding a motorcycle thats ridicoulus. Also I was interested in making that auto for sale to the public, too. The Puerto Rican agency that deals with autos said it had to meet D.O.T. standards before I can register it and license it. So that means that P.R. because it's an U.S. Commonwealth they go by our federal laws. Are all Kit cars mfrs. D.O.T. certified? Are all CO. That sell plans to build home builts cars certified and meet D.O.T. standards. What do I need to know if I decide to by plans for building a homebuilt car or buying Kit cars? How good are the cars brought from europe with Eurepean specifications and then converted to meet U.S. specifications called Gray Market cars? Some of this homebuilts plans from Home Mechanics are tree wheelers with a motorcycle engine made out of fiberglass a KU student has one. Some are electric cars and others are a combination of both. I believe the homebuilt I plan to build is cheap transportation for work and doing something good for our country saving oil. We Americans waste to much oil we need to conserve energy. Do you think I could receive a grant from the goverment for my work? My last question how good does the third brake light helps prevennt rear end collisions? Thank you very much for your time reading my letters and my many questions. Sincerly Yours, |
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ID: 86-4.16OpenTYPE: INTERPRETATION-NHTSA DATE: 07/18/86 FROM: Z. TAYLOR VINSON -- SENIOR STAFF ATTORNEY NHTSA TO: INTERPS. - STD. NO. 108 REDBOOK (3) TITLE: CHMSL INTERPRETATION TEXT: On July 16, 1986, a mechanic phoned with the following question: if a customer wishes to have a deck lid luggage rack installed, and that rack incorporates a center high-mounted stop lamp that is mounted between the rack and the deck lid, and the original interior mounted center stop lamp remains in place, would Standard No. 108 prohibit such an arrangement? I replied that it wouldn't, assuming that the rack itself in an unloaded condition prevented the lamp from full compliance with photometric and/or visibility requirements; paragraph S4.3.1.1. requires a supplementary or auxiliary lamp meeting Standard No. 108's requirements whenever motor vehicle equipment prevents compliance by a required item of lighting equipment. |
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ID: 86-4.17OpenTYPE: INTERPRETATION-NHTSA DATE: 07/18/86 FROM: ERIKA R. JONES -- CHIEF COUNSEL NHTSA TO: ROGER WILLIAMS -- PRESIDENT TECHNICAL HALLMARK ENTERPRISES, INC. TITLE: NONE ATTACHMT: UNDATED LETTER FROM ROGER WILLIAMS TO NHTSA TEXT: Dear Mr. Williams: This is in reply to your letter asking about regulations applicable to the "new lights that are now being seen on the trunk lids, and the rear windows of new automobiles". The specific legal name for this light is "center high-mounted stop lamp". It was optional for use as original equipment on passenger cars manufactured between August 1, 1984 and September 1, 1985. It has been mandatory original equipment since then. The Federal regulation that requires it is Federal Motor Vehicle Safety Standard No. 108 Lamps, Reflective Devices, and Associated Equipment issued by the National Highway Traffic Safety Administration of the Department of Transportation. This standard specifies color, minimum illuminated lens area, mode of operation, etc. for original equipment, and for equipment intended to replace that original equipment. The standard does not cover center high-mounted stop lamps intended for use on cars that never had them, and a manufacturer of such aftermarket motor vehicle equipment is subject only to State laws on their design, installation, and use. We encourage aftermarket manufacturers to follow the Federal standard so that the full potential of the lamp may be realized. This means that the lamp should be steady-burning rather than pulsating, and that the lens not have logos, trademarks, or other markings on it to interrupt the transmission of light from the lamp. The standard does not specify the shape of the lamp but virtually all to date have been rectangular (photos of the 1987 Cadil ac Allante show a circular one), and some have exceeded the minimum requirement of a lens area of at least 4 1/2 square inches. Noting your interest as a prospective manufacturer of these devices, I enclose a copy of Standard No. 108. Sections 4.1.1.41 (page 218), Section 4.3.18 (page 227) and Table III (page 256) provide the relevant requirements for center high-mounted stoplamps. Should you proceed to manufacture aftermarket lamps, you would be subject to the agency's notification and remedy procedures should a safety related defect occur in them. Otherwise, you would appear to be subject only to State laws. Sincerely, ENCLOSURE |
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ID: 86-4.18OpenTYPE: INTERPRETATION-NHTSA DATE: 07/21/86 FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA TO: TAKESHI TANUMA -- NISSAN RESEARCH & DEVELOPMENT, INC. TITLE: NONE ATTACHMT: LETTER DATED 12/19/85 TO ERIKA Z JONES, FROM TAKESHI TANUMA, OCC-0023, RE W-139-H TEXT: Dear Mr. Tanuma: This responds to your letter of December 19, 1985, asking whether an antitheft device installed in all but a few cars of a particular car line would be considered "standard equipment" under Title VI of the Motor Vehicle Information and Cost Savings Act. As explained below, the answer to your question is no. You describe a situation in which 99.9% of "A" model vehicles were equipped with an antitheft device in Model Year 1985. Specifically, your letter states that total sales in the United States for that model year were 101,854 vehicles. Of these, 101,758 vehicles were equipped with an antitheft device; the rest or 96 vehicles, which were shipped to Hawii, Guam, and Saipan as rental cars, were not equipped with an antitheft device. You state that you expect 99.9% of "A" model cars to be equipped with an antitheft device in Model Year 1987 and ask if, under these circumstances, the antitheft device can be considered standard equipment. Under section 605(a) of the Motor Vehicle Information and Cost Savings Act, any manufacturer may petition this agency for an exemption from the vehicle theft prevention standard for any "line or lines of passenger motor vehicle which are equipped as standard equipment with an antitheft device" which the agency determines is likely to be as effective in reducing and deterring motor vehicle theft as compliance with the standard. This section also defines "standard equipment" as that installed at the time the vehicle is delivered from the manufacturer and which is not an accessory or other item which the first purchaser customarily has the option to have installed. As interpreted by this agency, "standard equipment" refers to antitheft devices that are provided without extra charge on all vehicles of a particular line which are introduced into the commerce of the United States or imported and which are not intended solely for export and exported. Since the antitheft device in your example would not be installed in all model "A" cars imported into the United States, the agency concludes that the device would not be standard equipment within the meaning of section 605. Sincerely, |
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ID: 86-4.19OpenTYPE: INTERPRETATION-NHTSA DATE: 07/23/86 EST FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA TO: BENJAMIN R. JACKSON -- EXECUTIVE DIRECTOR AUTOMOBILE IMPORTERS COMPLIANCE ASSOCIATION TITLE: NONE ATTACHMT: LETTER DATED 05/07/86 TO BRIAN MCLAUGHLIN, FROM BENJAMIN R JACKSON TEXT: Dear Mr. Jackson: This responds to your letter to Mr. Brian McLaughlin of our Rulemaking division, in which you requested an interpretation of 49 CFR Part 541, Federal Motor Vehicle Theft Prevention Standard. Specifically, you asked for a written confirmation of Mr. McLaughlin's statement that only lines listed in Appendix A of Part 541 must be marked in compliance with Part 541. Mr. McLaughlin's statement was correct. Your concern appears to arise from the fact that direct importers sometimes import car lines not offered for sale in the United States by the original manufacturer. Such lines may have a majority of major parts interchangeable with the major parts of a car line offered for sale in the United States and listed in Appendix A of Part 541 as a high theft line subject to the theft prevention standard. Section 603(a)(1)(C) of the Motor Vehicle Information and Cost Savings Act (the Cost Savings Act; 15 U.S.C. 2023(a)(1)(C) specifies that lines that have a majority of major parts interchangeable with the major parts of a high theft line are themselves high theft lines for the purposes of the theft prevention standard. Accordingly, you were concerned that the direct importers might be statutorily required to make determinations of interchangeability with the listed in Appendix A, and mark those lines that had a majority of major parts interchangeable with those of a listed high theft line. This is not the case. Section 603(a)(2) of the Cost Savings Act specifies: "The specific lines ... which are to be subject to the standard may be selected by agreement between that manufacturer and [NHTSA]. If the manufacturer and [NHTSA] disagree as to such selection, [NHTSA] shall select such lines ..." The agency followed these procedures and arrived at the selections of high theft lines listed in Appendix A. All lines not listed in Appendix A are not required to be marked in accordance with Part 541, because they have not been selected as high theft lines in accordance with section 603(a)(2) of the Cost Savings Act. Sincerely, |
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.