NHTSA Interpretation File Search
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Understanding NHTSA’s Online Interpretation Files
- 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;
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- Some combination of the above, or other, factors.
Searching NHTSA’s Online Interpretation Files
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Result: Any document with both of those words.
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Result: Any document with a word beginning with those letters (e.g., headlamp, headlight, headlamps).
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Result: Any document beginning with the letters “no” followed by the letters “compl” (e.g., noncompliance, non-complying).
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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.”
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ID: nht78-3.33OpenDATE: 04/05/78 FROM: FRANK BERNDT FOR JOSEPH J. LEVIN; NHTSA TO: General Engines Co. Inc. TITLE: FMVSR INTERPRETATION TEXT: This responds to your January 13, 1978, letter asking whether prior to September of 1976, the National Highway Traffic Safety Administration (NHTSA) required the GAWR determination to be based upon an "unrestricted" speed of 60 miles per hour. The NHTSA requires that a vehicle's GAWR be based upon an unqualified speed of 60 miles per hour. This GAWR computation is then inserted on a vehicle's certification plate by the manufacturer to inform users of the safe GAWR. However, it is permissible to then list at the bottom of a certification plate different GAWR's based upon reduced speeds. If you intended one of your vehicles to operate under a reduced speed with a higher GAWR, you should have marked the correct GAWR on the certification label computed at 60 miles per hour and listed the higher GAWR's for the reduced speeds at the bottom of the plate. The 1976 amendment to which you refer, Standard No. 120, continues to require the same approach to GAWR as has been the agency's practice for many years. The only difference incorporated by the 1976 amendment is that those vehicles that are unable to attain speeds of 50 miles per hour in 2 miles need not base their GAWR determination on the 60 mile per hour figure. These vehicles may compute their GAWR's at a reduced speed. Nonetheless, they are still permitted to list at the bottom of the certification plate higher GAWR's for further reduced speeds. SINCERELY, JANUARY 13, 1977 Joseph Levine U.S. Department of Transportation NHSTA Reference: NMV-22 GSh CIR 1711-1 Dear Mr. Levine: Our company has been charged by NHSTA (Office of Standards Enforcement) of building trailers during the period 1972 to September 1976 "which had tires with weight ratings less than the GAWR." This statement is true if the GAWR is calculated at the unqualified speed of 60 M.P.H. Our GAWR's were based on reduced speeds, which to the best of our knowledge was permissible at that time. We request a legal interpretation of the following: During the period of 1972 to August 1976 was there a specific requirement in FMVSS 49 CFR Part 567 or 571 which stated that semi-trailers were required to use an unqualified speed rating of 60 M.P.H. to determine GAWR? To the best of our knowledge the "unrestricted" or "unqualified" speed rating requirement for GAWR certification became a requirement in September of 1976, under 571.120. Your early attention to this question would be appreciated. We have discussed this problem with Mr. Shifflet, Mr. Buckley, and Mr. Ness. F. W. Flowers, Jr. Vice-President |
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ID: nht78-3.34OpenDATE: 04/03/78 FROM: AUTHOR UNAVAILABLE; Joseph J. Levin Jr.; NHTSA TO: Alloy Trailers Inc. TITLE: FMVSR INTERPRETATION TEXT: This responds to your February 10, 1978, question whether a trailer is considered newly manufactured under section 571.7(f) of NHTSA regulations if new materials are used except for four running gear assemblies that come from the front and rear of two wrecked trailers and are welded together to form the front and rear tandems of the reassembled full trailer. It is our understanding that the axles, wheels, braking and suspension components would be taken from the existing trailers, the identity of one of the existig trailers would be continued in the reassembled trailer, and the two existing trailers would be owned or leased by the user of the reassembled trailer. Assuming that this understanding of the facts is correct, the NHTSA would consider the reassembled trailer to be not newly manufactured under 49 CFR 571.7(f) for purposes of the Act, implementing regulations, and the safety standards. |
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ID: nht78-3.35OpenDATE: 11/29/78 FROM: AUTHOR UNAVAILABLE; Joseph J. Levin Jr.; NHTSA TO: British Standards Institution TITLE: FMVSR INTERPRETATION TEXT: Please excuse the long delay in responding to your letter about materials incorporated by reference in the Federal motor vehicle safety standards. Your primary concern is the correct version of the referenced materials to be used in conducting compliance tests if the materials are subject to change. As you noted, Part 571.5 (49 CFR 571.5) of our regulations provides, in pertinent part, "Materials subject to change are incorporated as they are in effect on the date of adoption of this part, unless the reference to them provides otherwise." Almost all safety standards incorporating materials by reference specifically refer by month and year to a particular version of the referenced material. Therefore, the specified version should be used for compliance test purposes, even if the organization that adopted the reference material has published an updated version. If the reference does not identify a specific version, the version in effect when the safety standard was issued should be used for compliance testing. As you pointed out, many of the voluntary industry standards do not have an "effective date." To determine which version was "in effect" on the date the Federal safety standard incorporating the material was issued, the agency looks to the version adopted by the organization that developed the material as of that date. For example, the Society of Automotive Engineers Standards do not have an effective date, but they do have an identifying month and year which indicates when the latest version was approved by the appropriate SAE approval body. The agency would look at that identifying month and year to determine which version was in effect on the issuance date of the safety standard or amendment. Regarding your request for a list of the effective dates of the Federal safety standards, please be aware that the standards are being continually amended and the new provisions have their own effective dates. Thus, there is no single effective date for each standard. The enclosed computer printout provides a listing of the effective dates of the safety standards and their amendments as of July 1978. You are correct in your assumption that the safety standards only apply to vehicles manufactured on or after the effective date of relevant standard. Finally, the effective date of a safety standard does not have any bearing on which edition of materials incorporated by reference is applicable. The version used for compliance testing is the version specifically refered to in the standard by date or, if there is no date specification, the version which was in effect on the date of issuance of the safety standard. If you have any further questions, I will be pleased to answer them. SINCERELY, British Standards Institution National Highway Traffic Safety Administration Office of the Chief Counsel U S Department of Transportation Date: February 7, 1978 Dear Sirs MATTER INCORPORATED BY REFERENCE INTO FEDERAL MOTOR VEHICLE SAFETY STANDARDS A number of FMVSS's in Sub-part B of 49 CFR 571 make direct reference to one or more published specifications (such as those published by ANSI, SAE, ASTM, etc.); some of these specifications, which are sometimes termed "primary reference standards", make reference to further published specifications. Most of these specifications ae subject to periodic review and either amendment of re-confirmation; many of them (particularly those published by the SAE) have in fact been amended since the effective date of the relevant FMVSS. We would greatly appreciate your guidance on the ground rules for determining the edition of a referenced specification (whether "primary" or otherwise) that is applicable for conformity testing purposes. We have studied 49 CFR 571.5 and note the statement that" . . . materials subject to change are incorporated as they are in effect on the date of adoption of this part, unless the reference to them provides otherwise". However, we need to know: (a) the "date of adoption" of 49 CFR 571, and (b) whether the words "as they are in effect" has a precise meaning, bearing in mind that voluntary standards - unlike regulatory standards - do not normally have an "effective date". There is a related problem on which we would also request your guidance. Section 103(c) of the National Traffic and Motor Vehicle Safety Act requires that an effective date shall be specified for each FMVSS. But, on studying individual FMVSS's, we cannot see where the effective date is specified - at least, not in the CFR-published texts (although the date does appear in the FR-published texts). Unfortunately, we discard the FR-published version once it is incorporated in the CFR volume, so we are not able to make a retrospective analysis of all FMVSS's to determine their effective dates. Do you have a list of effective dates that you could let us have, and can you confirm that vehicles or equipment manufactured on or after the relevant effective date must comply with the requirements? And does the effective date of an FMVSS have any bearing on the edition of a referenced specification that is applicable? We apologise for troubling you on this matter but would be most grateful for your guidance. G I WHISTON Coordinator - International Information |
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ID: nht78-3.36OpenDATE: 04/12/78 FROM: AUTHOR UNAVAILABLE; Joseph J. Levin Jr.; NHTSA TO: Hess and Eisenhardt Co. TITLE: FMVSR INTERPRETATION TEXT: This responds to your recent letter requesting an interpretation concerning the vehicle classification of a proposed new station wagon having a Cadillac commercial chassis. Specifically, you ask whether the vehicle can be classified as a multipurpose passenger vehicle on the basis that it has the same chassis that is used on hearses and ambulances, which are multipurpose passenger vehicles. Based on your description, it is the agency's opinion that the proposed new station wagon would be classified as a passenger car. A multipurpose passenger vehicle is described in 49 CFR @ 571.3 as "a motor vehicle with motive power, except a trailer, designed to carry 10 persons or less which is constructed either on truck chassis or with special features for occasional off-road operation." The vehicle you described does not meet either of the criteria of that definition. The fact that your vehicle would be built on the same chassis as hearses and ambulances does not affect its classification as a passenger car. The classification of hearses and ambulances as multipurpose passenger vehicles was based upon specific policy considerations. The unique functions of these vehicles are accommodated by a strengthening of their chassis. Because of the special uses to which they are put, other aspects of the vehicles are designed in a manner which inhibits compliance with several passenger car standards. Given the chassis modifications and the special uses of these vehicles, the NHTSA determined that the policy considerations that led to the placing of vehicles with truck chassis into a category separate from passenger cars apply equally to ambulances and hearses, and that the chassis used for these vehicles may reasonably be considered truck chassis for purposes of classification. These policy considerations are not relevant to the vehicle you describe since it is apparently designed to function primarily as a passenger-carrying vehicle. SINCERELY, THE HESS & EISENHARDT CO. March 1, 1978 N.H.T.S.A. Office of Chief Counsel Dear Sirs: The Hess & Eisenhardt Company would like the N.H.T.S.A. to give us an interpretation on vehicle classification for a proposed new vehicle. This new vehicle will be a Cadillac Station Wagon. It will have nine designated seating positions forward of the rear axle with luggage storage rearward of the rear axle. We are questioning what type of vehicle it should be classified as. The reason for our question is due to the station wagon chassis. The basic wagon chassis will be the Cadillac commercial chassis. This is a special limousine chassis with, among other things, bigger brakes, springs, wheels and tires. We currently use this chassis for hearses and ambulances. Since hearses and ambulances are classified as an M.P.V. would using an M.P.V. chassis make the wagon an M.P.V.? Or, since it looks like a station wagon, would it be classified as a passenger car? Also, if we increased the seating capacity to eleven people would it be classified as a bus? As you can see, there are a couple of ways to look at our proposed vehicle. Possibly you cannot tell us what it should be classified as, but any advice that would give us a N.H.T.S.A. point of view in this matter would be appreciated. James N. Miller Engineer, Special Vehicles |
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ID: nht78-3.37OpenDATE: 07/19/78 FROM: AUTHOR UNAVAILABLE; Frank A. Berndt; NHTSA TO: Mr. Robert Hoppe TITLE: FMVSR INTERPRETATION TEXT: This responds to your letter of May 3, 1978, in which you request a determination as to whether the three-wheeled motor vehicle which you are designing is a "motorcycle" or an automobile ("passenger car") for purposes of complying with federal motor vehicle safety standards. The vehicle falls within the definition of "motorcycle" set forth in regulations under the National Traffic and Motor Vehicle Safety Act of 1966: "Motorcycle" means a motor vehicle with motive power having a seat or saddle for the use of the rider and designed to travel on not more than three wheeles in contact with the ground. (49 CFR Part 571.3(b)) Accordingly, the vehicle would have to meet the requirements of safety standards applicable to motorcycles. I have enclosed an information sheet explaining where you can obtain federal standards and regulations. I want to point out that in April 1974, this agency proposed a revision of the above definition of "motorcycle" under which this term would be limited to two-wheeled motor vehicles and to three-wheeled motor vehicles with handlebars and no passenger enclosures. I have enclosed a copy of this proposal. However, in view of the time that has elapsed since the proposal was issued, the agency has decided not to issue a final rule on this subject without providing another opportunity to comment. SINCERELY, Office of Chief Counsel Nat'l Highway Traffic Safety Admin. May 3, 1978 Gentlemen: Enclosed is a drawing of a small vehicle I am presently designing. Would you please give me a determination as to whether it is a motorcycle or an automobile? I realize that if I only build a single car I won't have any trouble making it street legal, however if I want to produce it in quantity it will have to comply with the various safety laws. Obviously having definite knowledge of which safety laws I will have to comply with is basic to the design. It is a three wheel vehicle. The single wheel in the rear is driven by the engine, the two front wheels steer. It will hold a single occupant who will sit in an automobile type seat and will steer with a normal steering wheel. Entry/exit is by a single gull wing type door on the left side. The windshield will be safety glass, provided with windshield wiper and defroster. Two headlights, tail lights, brake lights and turn signals will be included in the design. The frame will be welded box tubing with independent front suspension using motorcycle spring over shock absorbers. The wheels and tires will be standard 4.00 x 18 motorcycle. The fully enclosed body will be fiberglass. It will have a rear mounted motorcycle engine and standard swing arm. The engine will be a water cooled "V"-twin of 500 C.C. displacement and uses an enclosed shaft drive to the rear wheel. My purpose is to produce an extremely economical commuter vehicle which will get one man and his briefcase back and forth to work as comfortably and as swiftly (55 mph) as a modern car while getting 100 miles per gallon of gas. I believe there will be an urgent need for such a vehicle in the near future. A swift determination and any other information you can give me will be greatly appreciated. SINCERELY, Robert Hoppe (Graphics omitted) |
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ID: nht78-3.38OpenDATE: 11/22/78 FROM: AUTHOR UNAVAILABLE; Joseph J. Levin Jr.; NHTSA TO: Briggs and Morgan TITLE: FMVSR INTERPRETATION TEXT: This responds to your October 9, 1978, letter asking several questions concerning the modification and use of vans as school buses. First, you ask whether your client may purchase a van that transports fewer than 10 passengers, and add passenger seating to it without complying with the school bus safety standards. The answer to your question is yes. The National Highway Traffic Safety Administration regulates the manufacture of motor vehicles. Further, the agency prohibits manufacturers, dealers, repair businesses or distributors from subsequently rendering inoperative compliance of a motor vehicle with the safety standards. However, the agency does not regulate modifications made by vehicle owners on their own vehicles. Second, you ask whether buses manufactured after April 1, 1977, which were purchased to transport handicapped adults or other adults can subsequently be used to transport children to and from school even though the buses do not comply with the requirements. The answer to this question is the same as the answer to your first question. The agency regulates only the manufacture and initial sale of these vehicles and does not control the use of used vehicles. Finally, you ask whether your client may purchase a 15 passenger vehicle and subsequently modify it in such a manner that it carries fewer than 10 passengers without complying with the school bus safety standards. Since the school bus safety standards apply only to vehicles carrying 10 or more passengers, a vehicle carrying fewer than 10 passengers is not required to comply with the requirements. Although the Federal government's regulations do not prohibit the modifications that you propose in your letter, there are several other considerations of which you client should be made aware. First, although your modifications do not fall within our authority, in the case of your first and second questions the vehicles may fall within a State's definition of school bus and should comply with the school bus safety standards. Some States will not permit the registration of vehicles for school bus use if those vehicles should comply with the safety standards and do not. Therefore, you should check the appropriate State office to ensure that the vehicles you intend to modify can be used under existing State law. Second, there is a potential for increased private tort liability for accidents occurring in vehicles that should comply with safety standards but do not. SINCERELY, BRIGGS AND MORGAN October 9, 1978 Roger Tilton Attorney Adviser National Highway Traffic Safety Administration Re: Utilization of Multi-Purpose Vans in the Transportation of School Children Dear Mr. Tilton: As I indicated during our recent phone conversation, our office represents a Minnesota company whose operations include the transportation of handicapped school children in van-type vehicles. Prior to making final decisions regarding the purchase of additional vehicles and possible modification of others, our client has asked our assistance in seeking a clarification of certain statutory and regulatory provisions relating to the applicability of federal school bus safety standards. As you may recall from our discussion, we have three rather specific inquiries: 1. May our client purchase van-type vehicles manufactured after April 1, 1977 which are designed to carry less than ten passengers and modify the vans so as to allow the seating of twelve or fourteen passengers without subjecting them to the federal safety standards for school buses? 2. The Company purchased a number of fifteen-passenger vans manufactured after April 1, 1977 for the purpose of transporting handicapped adults to and from their workplace. Subsequent to the purchase of these vehicles, the intended use was frustrated by the fact that the handicapped adult traffic ceased to be available. May the Company now utilize these fifteen-passenger vehicles in the transportation of school children without equipping them in accordance with the federal safety standards for school buses? In a similar vein, the Company has considered the purchase of other fifteen-passenger vans for transporting persons to and from their jobs. If these vehicles were purchased primarily for that purpose, could they also be used for transporting school children without being equipped in conformance with the federal safety standards for school buses? 3. May the Company purchase fifteen-passenger vans and convert them to accomodate a combination of wheelchairs and regular seating not exceeding ten persons, including the driver, without application of the federal school bus safety standards? Your initial reaction appeared to confirm our judgment that these questions may be answered in the affirmative. We would be greatly appreciative of a written response from your office which addresses the above questions in light of the applicable provisions of federal law. I have attached a short Memorandum which was prepared in our office some time ago reviewing the applicable provisions of the Motor Vehicle Safety Act and Regulations of the National Highway Traffic Safety Administration. I have enclosed it here for your convenience. Finally, if you find you need additional facts or a clarification of matters contained herein, please don't hesitate to call the undersigned at your convenience. John B. Van de North, Jr. [ENC. OMITTED] |
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ID: nht78-3.39OpenDATE: 12/26/78 FROM: AUTHOR UNAVAILABLE; Joseph J. Levin Jr.; NHTSA TO: Dominic S. Piacenza TITLE: FMVSR INTERPRETATION TEXT: This is in response to your letter of November 9, 1978, asking whether a memorandum of understanding exists between the National Highway Traffic Safety Administration (NHTSA) and the Federal Trade Commission (FTC) concerning the apparent overlapping jurisdiction regarding tire marketing practices created by Section 203 of the National Traffic and Motor Vehicle Safety Act of 1966 (Safety Act) (15 U.S.C. 1423). You ask whether NHTSA's jurisdiction extends solely to safety-related issues. NHTSA's authority is not confined solely to the area of motor vehicle and traffic safety. For example, under the Motor Vehicle Information and Cost Savings Act (15 U.S.C. 1901) the agency has been given authority over the areas of fuel economy and economic losses to consumers as they relate to automobiles. While the Safety Act is primarily concerned with safety issues, Section 203 of that law does provide NHTSA with limited authority over tire marketing practices. The Uniform Tire Quality Grading Standards (49 CFR 575.104), issued by NHTSA under the authority of Section 203, provide information to consumers in tire performance areas relating to both safety and economic issues. While the FTC is aware of and supports NHTSA's efforts in the field of tire grading, no memorandum of understanding exists with regard to the scope of NHTSA's activities. Section 205 of the Safety Act (15 U.S.C. 1425) does state that, in the event of conflict between orders or regulations issued under the Safety Act concerning motor vehicle tires and FTC orders or interpretations, the orders or regulations issued under the Safety Act shall prevail. |
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ID: nht78-3.4OpenDATE: 04/13/78 FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA TO: Cars & Concepts, Inc. TITLE: FMVSS INTERPRETATION TEXT: This responds to your letter of February 16, 1978, asking whether the certification markings required on glazing materials by Safety Standard No. 205 must remain visible from the interior or exterior of a vehicle after installation. The answer to your question is no. There is nothing in the certification requirements of section S6 of Standard No. 205 that requires the markings to remain visible after installation on the vehicle. As long as the glazing manufacturer has certified and marked his glazing in accordance with the standard and as long as these markings are not removed by the vehicle manufacturer there is no prohibition against covering the markings. Sincerely, ATTACH. Cars & Concepts, Inc. February 16, 1978 Mr. Oats -- Office of Chief Council, N.H.T.S.A. Dear Mr. Oats: Regarding your conversations with Ed Myjack of my office, it is his understanding that the Department of Transportation markings on glass need not be visible from the interior or exterior of a vehicle (providing the original manufacturer's marking do remain on the glass). As we provide vinyl top design and installations on some OEM vehicles, some of the designs may cover these markings on the quarter glass and/or backlights. Since we provide these type of installations to the OEM, they require written proof that such modifications are within the requirements of FMVSS No. 205. Thank you for your consideration of this matter. Sincerely, Moe Pare, Jr. -- Director of Design cc: D. Draper; E. Myjack |
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ID: nht78-3.40OpenDATE: 08/30/78 FROM: AUTHOR UNAVAILABLE; John Womack; NHTSA TO: Utah State Tax Commission TITLE: FMVSR INTERPRETATION TEXT: Thank you for your letter of August 10, 1978, requesting approval to use Utah's proposed Certificate of Title as a substitute for the Federal odometer disclosure form required by 49 CFR Part 580. The proposed Certificate of Title which you enclosed with your letter differs from the Federal odometer disclosure form in the following ways: (1) The Utah Certificate of Title contains no reference to State or Federal law; (2) the set of certifications relating to the distance the vehicle has travelled are shortened by adopting the format recommended by the American Association of Motor Vehicle Administrators; (3) the certifications relating to alteration of the odometer are deleted; and (4) the transferee is not required to sign the statement. The only suggestions that we have are that you include a reference to either State or Federal law and the signature of the transferee (buyer). The purpose of the reference to the law is to alert the purchaser to the fact that the odometer information is a legal requirement, the violation of which is punishable. The purpose of the transferee's signature is to ensure that he or she has seen the disclosure statement and to prevent him or her from later claiming that no statement was received. With these changes Utah's Certificate of Title will be in substantive conformity with the Federal odometer law, despite its differences from the Federal form. Therefore, pursuant to 49 CFR 580.4(f)(2), I hereby grant your request to use Utah's Certificate of Title, with the changes noted above, as a substitute for the Federal form. |
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ID: nht78-3.41OpenDATE: 02/02/78 FROM: AUTHOR UNAVAILABLE; John Womack; NHTSA TO: Minnesota Department of Public Safety TITLE: FMVSR INTERPRETATION TEXT: This is in response to your letter of November 15, 1977, requesting an exemption from the Federal odometer disclosure regulations which will become effective as of January 1, 1978. We appreciate the efforts of Minnesota to include odometer information on its certificates of title. However, we are not granting any exemptions for States which have not previously had odometer information on their titles. Since the citizens of your State have had to execute separate odometer disclosure statements in the past they will not be placed under any additional burden by this ruling. They will merely continue past practices until such time as Minnesota incorporates the revised odometer format on their titles. |
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.