NHTSA Interpretation File Search
Overview
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;
- 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
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 |
---|---|
search results table | |
ID: nht94-1.68OpenTYPE: Interpretation-NHTSA DATE: March 7, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Lawrence A. Beyer TITLE: None ATTACHMT: Attached to letter dated 2/14/94 from Lawrence A. Beyer to Z. Taylor Vinson (OCC-9662) TEXT: This responds to your FAX of February 14, 1994, to Taylor Vinson of this Office regarding the "re-importation" of used certified motorcycles into the United States after modifications have been performed abroad. These modifications would not involve a " knowingly rendering inoperative" of equipment related to the Federal motor vehicle safety standards. You have asked whether our interpretation of November 16, 1992, "regarding this matter" remains operative. We assume the letter to which you refer is the one addressed to Wolfgang Klamp of Blaine, Washington. Mr. Klamp's wife crossed the border daily in her Canadian-manufactured Ford Tempo to her Canadian place of employment. Because the vehicle was not cert ified as meeting U.S. safety standards, the U.S. Customs Service had informed her the car would not be admitted in the future without going through the formal entry process for conversion to the U.S. standards. We verified that the Customs Service was a cting in accordance with the National Traffic and Motor Vehicle Safety Act, and provided several suggestions. This letter remains our position. However, we fail to understand its relevance to the fact situation you present regarding importation of motorcycles that are certified as meeting the Federal motor vehicle safety standards. We can only surmise that ind ividual Customs officials may be questioning whether the modified motorcycles comply with all applicable U.S. Federal motor vehicle safety standards at the time of entry, notwithstanding the fact that they are certified as complying as of their manufactu re. As you know, a motor vehicle offered for importation must comply with the U.S. safety standards at the time of importation (or be converted to those standards after entry), regardless of its state of compliance at the time of its manufacture. We have no regulations under which a manufacturer, distributor, dealer, or motor vehicle repair business may state that it has not knowingly rendered inoperative any device or element of design installed in accordance with a Federal motor vehicle safety standard. However, we would recommend that Customs accept such a statement accompanying an HS-7 Form's declaration of vehicle compliance if it also contained the statement that in the modifier's opinion the vehicle remained in compliance upon completion of the modifications. Alternatively, and relevant to modifications that relate to a safety standard which may not have had to be met initially (i.e. installation of glazing on a motorcycle that was not originally manufactured with a windshield), we suggest that the modifier p rovide a statement, in writing or on a label affixed to the vehicle, of the kind required of an alterer of a new vehicle, as set forth in 49 CFR 567.7. This statement attests to the continuing compliance of a motor vehicle after modification. Our willingness to accept such a stateme nt should enable Customs to enter the modified motorcycles as conforming vehicles. |
|
ID: nht94-1.69OpenTYPE: Interpretation-NHTSA DATE: March 7, 1994 FROM: J. Roberts -- John H. Roberts Well Drilling Co. TO: John Womack -- Acting Chief Counsel, U.S. Department of Transportation TITLE: None ATTACHMT: Attached to letter dated 4/12/94 from John Womack to J. Roberts (A42; Part 571) TEXT: I received your letter of the 28th and thank you for your response. Although I understand your department's position regarding the H.M.M.V.E., I would request your further assistance on clarification. Could you provide me with the list of the specific objections your department based its recommendation on. Thank you in advance for your help. |
|
ID: nht94-1.7OpenTYPE: Interpretation-NHTSA DATE: January 3, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA; Signature by Kenneth Weinstein TO: Thomas D. Price -- President, Strait-Stop, ABAS Marketing, Inc. TITLE: None ATTACHMT: Attached to letter dated 10/8/93 from Thomas D. Price to Marvin Shaw (OCC 9197) TEXT: This responds to your letter concerning this agency's notice of proposed rulemaking (NPRM) to require medium and heavy vehicles to be equipped with an antilock braking system (58 FR 50739, September 28, 1993). You noted that the proposed definition for "antilock brake system" incorporates the terminology "rate of angular wheel rotation," and requested a definition of this terminology. You also suggested that there is ambiguity as to the precise meaning of the word "performance," apparently with respec t to the way that word is used in the preamble. Accordingly, you requested a definition of that word as well. By way of background information, the purpose of publishing NPRM's is to provide all interested persons an opportunity to comment on regulations being considered by the agency. If any interested person believes that the proposed regulatory text and/or t he agency's explanation in a preamble concerning a proposed regulation are unclear, the appropriate place to make that argument is in a comment on the NPRM. If a person believes that a portion of the proposed regulation should be clarified in a particul ar manner, that recommendation also should be included in a comment. Similarly, if a person believes the agency's explanation for the proposed rule is unclear, the person can identify in comments the portion of the explanation at issue and explain the i mplications his or her concern has on the agency's decision concerning a possible final rule. Since the questions and views in your letter are in the nature of comments on the pending NPRM, we are placing a copy of your letter in the public docket for that NPRM. I want to assure you that your comments will be considered at the same time all the other public comments are considered. Only after considering the comments will NHTSA reach a decision on whether to issue a final rule. NHTSA does not issue separate letters or documents responding to individual public comments in a rulemaking. Instead, after carefully considering all comments, NHTSA provides its responses in the next relevant rulemaking notice, e.g., a final rule or a notice terminating the rulemaking. While we cannot provide specific responses to your questions, we note that pages 50742 and 50743 of the NPRM provide an extensive discussion about how the agency derived its definition for antilock braking system. This discussion explains that the defin itions were derived in large part from the Society of Automotive Engineers (SAE) Recommended Practice J656, "Automotive Brake Definitions and Nomenclature" (1988), and the Economic Commission for Europe's Regulation 13 (1988). We have enclosed for your information a copy of that SAE Recommended Practice, which uses the terminology "rate of angular rotation of the wheel(s)." With respect to your question about the meaning of "performance," we note generally that each of this agency's safety standards specifies those requirements that are deemed necessary to obtain the desired safety performance from a particular vehicle syst em or item of equipment. Any design that will satisfy the requirements may be used for the system or item of equipment. I hope this information is helpful. |
|
ID: nht94-1.70OpenTYPE: Interpretation-NHTSA DATE: March 8, 1994 FROM: David A. Scott -- President, RKS International L.L.C. TO: John Womack -- Acting Chief Counsel, NHTSA TITLE: None ATTACHMT: Attached to letter dated 4/25/94 from John Womack to David A. Scott (A42; Part 591) TEXT: After contacting your Chicago representative, I was informed that you were the authoritative person qualified to respond to my inquiries. RK Technologies, Inc. is a Wisconsin Corporation. We deal mostly with China. We are presently considering importing from China to the United States fiberglass kit cars. Our consideration is to import the cars either disassembled or partially assembled in China. We will then be providing and/or installing American parts in the U.S., for the major mechanical portions like engines, transmissions, suspension systems, tires,etc. The cars will be sold in the United States. Please provide us with the information guidelines and/or restrictions that will have to be met to ensure compliance with the possible imports and with the assembling and circulation of cars in the U.S. I would appreciate your prompt attention and response and I thank you in advance. |
|
ID: nht94-1.71OpenTYPE: Interpretation-NHTSA DATE: March 9, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Lawrence F. Henneberger -- Arent Fox Kintner Plotkin & Kahn TITLE: None TEXT: This responds to your request, in a February 3, 1994, meeting, that we provide a letter clarifying certain Federal legal requirements related to a hydraulic brake lock that is sold as aftermarket equipment. You made this request on behalf of your client , MICO, Inc. You indicated that the device is ordinarily added to used vehicles, but sometimes might be installed by a body builder prior to a vehicle's first sale to a consumer. The hydraulic brake lock at issue supplements the mechanical parking of a motor vehicle by providing supplemental holding capacity for the vehicle. The brake lock is installed in the hydraulic brake lines between the master brake cylinder and the foundation brakes. You particularly asked us to confirm your understanding that such a device is not precluded by Federal Motor Vehicle Safety Standard No. 105, Hydraulic Brake Systems. As you know, the National Highway Traffic Safety Administration (NHTSA) is authorized under the National Traffic and Motor Vehicle Safety Act (Safety Act) to issue Federal motor vehicle safety standards that apply to the manufacture and sale of new motor vehicles and new items of motor vehicle equipment. Section 108(a)(1)(A) of the Safety Act prohibits any person from manufacturing, introducing into commerce, selling, or importing any new motor vehicle or item of motor vehicle equipment unless the vehi cle or equipment item is in conformity with all applicable safety standards. NHTSA does not approve motor vehicles or motor vehicle equipment, nor do we endorse any commercial products. Instead, the Safety Act establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet all applicable safety standards. The following represents our opinion based on the facts set forth in this letter. Nothing in Standard No. 105 precludes the inclusion of a hydraulic brake lock that provides supplemental holding capacity for a vehicle, nor does NHTSA have any other regulations specifically covering hydraulic brake locks. Therefore, MICO, as manufactu rer of the device, would not have any certification responsibilities. However, the requirements of Standard No. 105 are relevant to hydraulic brake locks. This standard applies to new motor vehicles and specifies a number of brake performance requireme nts. Since the installation of a hydraulic brake lock requires cutting into the vehicle's brake system, it is possible that such a device could be installed in a manner that affects a vehicle's compliance with Standard No. 105. You indicated that the hydraulic brake lock at issue is ordinarily added to used motor vehicles. After the first purchase of a vehicle, the only provision in Federal law that affects a vehicle's continuing compliance with an applicable safety standard i s set forth in section 108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)). That section provides: No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative, in whole or in part, any device or element of design installed on or in a motor vehicle ... in compliance with an applicable Federal motor vehicle safety standard. Thus, the named commercial entities would be prohibited from installing a hydraulic brake lock only if such installation would take the vehicle out of compliance with an applicable safety standard, such as Standard No. 105. The "render inoperative" provi sion does not apply to modifications made to vehicles by their owners. You indicated that the hydraulic brake lock at issue may sometimes be installed by a body builder prior to the first sale of the vehicle to a consumer. Such a body builder would presumably be installing the hydraulic brake lock on either a completed veh icle that had previously been certified as complying with all Federal motor vehicle safety standards, or as part of the final stage manufacture of a vehicle for which the incomplete vehicle manufacturer had installed a brake system that complied with Sta ndard No. 105. In both cases, the body builder would have certification responsibilities with respect to the vehicle's compliance with Standard No. 105, either as an alterer or as a final stage manufacturer. See 49 CFR Parts 567 and 568. I hope this information has been helpful.
|
|
ID: nht94-1.72OpenTYPE: Interpretation-NHTSA DATE: March 9, 1994 FROM: J.L. Steffy -- Triumph Designs Ltd. TO: Dave Elias -- Office of the Chief Counsel TITLE: None ATTACHMT: Attached to letter dated 3/29/94 from John Womack to J.L. Steffy (A42; Part 565) TEXT: I am writing to ask for an interpretation of CFR 565.4 with the possibility of gaining a waiver from NHTSA. With respect to the VIN Label Table VI shows that a letter code is given for each MODEL YEAR. Currently our VIN labels have a letter code for the YEAR PRODUCED. Therefore, a 1994 model year vehicle could have letter code "P" for 1993 if it was produced in November 1993, for example. This assists us from a traceability standpoint. WE WOULD LIKE TO MAINTAIN OUR PRESENT SYSTEM IF AT ALL POSSIBLE. I believe we agree with the spirit of 565.4, which is to match a time frame to a letter code within the VI N. As we are currently preparing all items for entry into the U.S. this fall, I would like to hear from you as soon as possible. I appreciate your assistance. |
|
ID: nht94-1.73OpenTYPE: Interpretation-NHTSA DATE: March 9, 1994 FROM: Doug Bereuter -- U.S. House of Representatives TO: Howard Smolkin -- Acting Administrator, NHTSA TITLE: None ATTACHMT: Attached to letter dated 4/12/94 from Christopher A. Hart to Doug Bereuter (A42; Part 303) TEXT: I am writing to convey my continuing intense interest in the National Highway Traffic Safety Administration's rulemaking concerning compressed natural gas vehicle fuel systems and fuel containers. As I have made absolutely clear to you and other Departm ent of Transportation officials, ANY FURTHER DELAYS IN THE COMPLETION OF THE RULEMAKING SIMPLY WILL NOT BE TOLERATED. Every day that goes by without a final rule creates further hardship for Brunswick Corporation and its employees. CLEAR PROGRESS ON TH IS MATTER IS IMPERATIVE! Let me know the status of the rulemaking. |
|
ID: nht94-1.74OpenTYPE: Interpretation-NHTSA DATE: March 10, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Michael J. Siris -- Attorney at Law TITLE: None ATTACHMT: Attached to letter dated 12/8/93 from Michael J. Siris to Mary Versailles (OCC-9469) TEXT: This responds to your letter of December 8, 1993, following a phone conversation with Mary Versailles of my staff. Your letter requested "confirmation that a manufacturer's compliance with a given NHTSA standard does not necessarily exonerate the manufa cturer." You also asked whether there might be any standards other than Standard No. 114, Theft Protection, which might apply to a "1987 Ford vehicle which allowed the automatic transmission to be shifted while the key was not in the steering column." Section 108(k) of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. S1397(k)) states: Compliance with any Federal motor vehicle safety standard issued under this title does not exempt any person from any liability under common law. Thus, you are correct that a vehicle's compliance with all applicable safety standards does not necessarily exonerate the manufacturer from liability under other causes of action. With regard to your second question, S4.2.1 of Standard No. 114 states that, with certain exceptions,: the key-locking system required by S4.2 in each vehicle which has an automatic transmission with a "park" position shall prevent removal of the key unless the transmission or transmission shaft lever is locked in "park" or becomes locked in "park" as the direct result of removing the key. However, as explained in your phone conversation with Ms. Versailles, this requirement was added to Standard No. 114 in 1991 and was effective September 1, 1992. There was no Federal standard which prohibited a 1987 vehicle from having an automatic tran smission which could be shifted when the key was removed. I am also unaware of any other standard or regulation containing such a requirement. I hope you find this information helpful. If you have any other questions, please contact Mary Versailles of my staff at this address or by phone at (202) 366-2992. |
|
ID: nht94-1.75OpenTYPE: Interpretation-NHTSA DATE: March 10, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Larry R. Lynch -- AT & D Corporation TITLE: None ATTACHMT: Attached to letter dated 10/27/93 from Larry R. Lynch to John Womack (OCC-9281) TEXT: This responds to your inquiry about how Federal safety standards would apply to the "AeroCon System," a new product being developed by your firm. You state that this product is an air deflector/fairing that provides aerodynamic braking. According to you r letter, "By opening doors on the fairing unit, the full force of the relative wind speed is redirected to strike the trailer face, greatly decreasing stopping distance. The pneumatic power required to actuate the system's doors utilizes the auxiliary air system of the tractor." (emphasis in original) I am pleased to have this opportunity to explain our regulations. I am also enclosing a copy of a fact sheet titled "Information for New Manufacturers of Motor Vehicles and Motor Vehicle Equipment." By way of background information, the National Highway Traffic Administration (NHTSA) does not provide approvals of motor vehicles or motor vehicle equipment. Under the Safety Act, it is the responsibility of the manufacturer to ensure that its vehicles or equipment comply with all applicable standards. The following represents our opinion based on the facts provided in your letter. NHTSA does not have any specific regulations about air deflectors or fairings. However, since the AeroCon System "utilizes the auxiliary air system," it could affect a vehicle's compliance with Standard No. 121, Air Brake Systems. That standard applies to almost all new trucks, buses, and trailers equipped with air brake systems. If the AeroCon System is installed as original equipment on a new vehicle, the vehicle manufacturer is required to certify that, with the device installed, the vehicle satisfies the requirements of all applicable safety standards, including Standard No. 121. (See 15 U.S.C. S1397(a)(1) and 49 CFR Part 567.) If the device is added to a previously certified new motor vehicle prior to its first consumer purchase, then the person who modifies the vehicle would be an alterer of a previously certified motor v ehicle and would be required to certify that, as altered, the vehicle continues to comply with all of the safety standards affected by the alteration. 49 CFR S567.7. If the device is installed on a used vehicle by a manufacturer, distributor, dealer, or motor vehicle repair business, then the installer would not be required to attach a certification label. However, it would have to make sure that it did not knowingl y render inoperative, in whole or in part, any device or element of design installed on or in a motor vehicle or item of motor vehicle equipment in compliance with an applicable Federal motor vehicle safety standard. 15 U.S.C. S1397(a)(2)(A). You may w ish to determine whether the AeroCon System adversely affects compliance with any of the requirements in Standard No. 121. In addition, under the Safety Act, the AeroCon System would be considered an item of motor vehicle equipment. Your company, as a manufacturer of motor vehicle equipment, would be subject to the requirements in S151-159 of the Safety Act concerning the r ecall and remedy of products with safety related defects. In the event that NHTSA or the product's manufacturer determines that a product that is an item of motor vehicle equipment contains a safety-related defect, the manufacturer is responsible for no tifying purchasers of the defective equipment and remedying the problem free of charge. I hope this information is helpful. If you have any questions about NHTSA's safety standards, please feel free to contact Marvin Shaw at this address or by telephone at (202) 366-2992. |
|
ID: nht94-1.76OpenTYPE: Interpretation-NHTSA DATE: March 10, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Joe de Sousa -- President, Safety Pro's International, Inc. TITLE: None ATTACHMT: Attached to letter dated 8/12/93 from Joe de Sousa to NHTSA Office of Chief Counsel (OCC-8998) and letter dated 8/12/93 from Joe de Sousa to Richard Van Iderstine TEXT: We have received your letter of August 12, 1993, as well as your letter to Mr. Van Iderstine of this agency and its enclosures. You are interested in marketing an accessory daytime running lamp (DRL) system, and have asked for an interpretation of Federal Motor Vehicle Safety Standard No. 108 as it applies to this product. There appear to be two versions of this system. In both systems, the DRLs are the lower beam headlamps, automatically activated at 77% intensity when the ignition is turned on. The taillamps and side marker lamps are not activated. The systems are deactivated when the ignition is turned off. The systems d iffer in that one automatically activates the headlamps to full intensity (while activating the taillamps and side marker lamps as well) at a predetermined lower ambient light level. Under the National Traffic and Motor Vehicle Safety Act, aftermarket lighting equipment may be installed provided that it does not render inoperative, in whole or in part, any device or element of design installed in accordance with a Federal motor vehic le safety standard. The system you describe is congruent with the DRL systems permitted by Standard No. 108, which allows DRLs to be lower beam headlamps operated at less than full intensity, without activation of the taillamps and side marker lamps. Th erefore, the installation of either of your DRL systems would not affect a vehicle's pre-existing compliance with Standard No. 108 or any other standard, and is permissible under our regulations. We note that the reduced intensity is achieved by a "pulse with modulation" which cycle the headlamps "on and off faster than the eye can detect." S5.5.10(d) of Standard No. 108 requires headlamps to be steady-burning for uses other than flashing. While a modulating headlamp technically is not a steady-burning one, for purposes of this requirement we have concluded that there is no failure to conform if the modulating light from the lamp is perceived to be a steady beam, as appears to be the case here. |
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.