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: aiam4898OpenMr. Garth C. Bates, Jr. Vice President Steward & Stevenson Services, Inc. P.O. Box 1637 Houston, Texas 77251-1637; Mr. Garth C. Bates Jr. Vice President Steward & Stevenson Services Inc. P.O. Box 1637 Houston Texas 77251-1637; "Dear Mr. Bates: This responds to your letter of July 12, 1991. In th letter, you ask whether the National Highway Traffic Safety Administration (NHTSA) has regulations concerning the construction or testing of compressed natural gas (CNG) automotive fuel tanks. I am pleased to have this opportunity to explain our regulations to you. Some background information on Federal motor vehicle safety laws and regulations may be helpful. NHTSA is authorized, under the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq., the Safety Act) to issue safety standards applicable to new motor vehicles and certain items of motor vehicle equipment. NHTSA, however, does not approve motor vehicles or motor vehicle equipment nor 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. Standard No. 301, Fuel System Integrity, (49 CFR 571.301) specifies requirements for the integrity of motor vehicle fuel systems. However, that standard does not apply to vehicles that use only fuel with a boiling point below 32 degrees Fahrenheit. Since CNG has a boiling point well below this level, vehicles manufactured to be fueled only by CNG are not covered by the standard. You should be aware, however, that NHTSA recently discussed the possibility of establishing a fuel system integrity standard for vehicles using CNG in an Advance Notice of Proposed Rulemaking (ANPRM). The ANPRM was published in the Federal Register on October 12, 1990 (55 FR 41561). There are some requirements that are applicable to manufacturers of CNG automotive fuel tanks. Manufacturers of motor vehicle equipment are subject to the requirements in sections 151-159 of the Safety Act (15 U.S.C. 1411-1419) concerning the recall and remedy of products with defects related to motor vehicle safety. Section 102(4) of the Safety Act (15 U.S.C. 1391(4)) defines, in relevant part, the term 'motor vehicle equipment' as: any system, part, or component of a motor vehicle as originally manufactured or any similar part or component manufactured or sold for replacement or improvement of such system, part, or component or as any accessory, or addition to the motor vehicle . . . Since your product would be manufactured for use as an automotive fuel tank, it would be considered 'motor vehicle equipment' within the meaning of the Safety Act. If either your company, as the equipment manufacturer, or this agency were to determine that your product contained a defect related to motor vehicle safety, your company would have to notify purchasers of the defect and remedy the problem free of charge to the purchasers. For your information, I am enclosing a copy of the ANPRM concerning possible fuel system integrity requirements for vehicles using CNG and an information sheet for new manufacturers of motor vehicles and motor vehicle equipment. If you have any further questions, please contact John Rigby of this office at 202-366-2992. Sincerely, Paul Jackson Rice Chief Counsel Enclosures"; |
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ID: aiam0567OpenMr. David G. Holden, President, Triple H Frame Company, Coffeyville, KS 67337; Mr. David G. Holden President Triple H Frame Company Coffeyville KS 67337; Dear Mr. Holden: This is in reply to your letter of December 1, 1971, stating that yo are an incomplete vehicle manufacturer, and asking for clarification of provisions of section 568.4 of Title 49, Code of Federal Regulations ('Vehicles Manufactured in Two or More Stages'), that refer to 'standards.' You indicated in a phone conversation of December 17, 1971, with Michael Peskoe of this office that you manufacture travel trailer and mobile home frames, which may be equipped by you with both tires and a trailer hitch before being sent to the subsequent manufacturer for completion.; The reference to 'standards' in S 568.4, as you were informed o December 17, is to the Motor Vehicle Safety Standards (49 CFR 571.101 *et seq*., formerly 571.21 *et seq*.) which apply to motor vehicles manufactured for sale in the United States. Copies of the standards, as you were also informed, may be purchased as indicated in the enclosed 'Notice of Publications Change.'; You stated on December 17 that you planned to include the statement o 568.4(a)(7)(iii) as part of your certification label. Based on the information you have provided, this choice appears to be consistent with the requirements of Part 568. This is because the only motor vehicle safety standard presently applicable to trailers and mobile homes is Standard No. 108, 'Lamps, Reflective Devices, and Associated Equipment.' It appears quite possible that conformance to this standard would not be substantially determined by the design of the incomplete vehicle you manufacture.; We are pleased to be of assistance. Sincerely, Richard B. Dyson, Assistant Chief Counsel |
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ID: aiam4877OpenMr. Stephen Mamakas AIR Inc. 1517 West 9 Street Brooklyn, NY 11204; Mr. Stephen Mamakas AIR Inc. 1517 West 9 Street Brooklyn NY 11204; "Dear Mr. Mamakas: This responds to your letter asking what Federa standards apply to the 'repair' of deployed air bags. I am pleased to have this opportunity to explain our laws and regulations to you. Section 103 of the National Traffic and Motor Vehicle Safety Act (the Safety Act, 15 U.S.C. 1392) authorizes this agency to issue Federal motor vehicle safety standards applicable to new motor vehicles and new items of motor vehicle equipment. We have exercised this authority to issue Standard No. 208, Occupant Crash Protection (49 CFR 571.208). Standard No. 208 requires, among other things, that passenger cars provide automatic crash protection. Light trucks will also be required to provide automatic crash protection, beginning with the 1995 model year. Vehicles equipped with automatic crash protection protect their occupants by means that require no action by vehicle occupants. The compliance testing of vehicles to the requirement of Standard No. 208 is determined in a dynamic crash test. That is, a vehicle must comply with specified injury criteria (as measured on a test dummy) when tested by this agency in a 30 mph barrier crash test. The two types of automatic crash protection currently offered on new passenger cars are automatic safety belts (which help to assure belt use) and air bags (which supplement safety belts and offer some protection even when safety belts are not used). Automatic crash protection will save thousands of lives and prevent tens of thousands of serious injuries each year. Note that the automatic crash protection requirement applies to the performance of the vehicle as a whole, instead of setting requirements for the air bag as an individual item of equipment. This approach permits vehicle manufacturers to 'tune' the performance of the air bag to the crash pulse and other specific attributes of each of their vehicle models. However, this approach also means that the Federal standards do not specify specific performance attributes for air bags such as inflated dimensions, actuation time, and the like. Hence, there are no specific performance attributes with which repaired air bags must comply. The only Federal requirement that might affect your planned operation would be the 'render inoperative' prohibition in section 108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1397(a)(2)(A)). That section provides that, '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 ...' In this case, air bags are a 'device or element of design' installed in passenger cars in compliance with Standard No. 208. Hence, your repair business would violate Federal law if it were to remove, deploy, disable, or otherwise 'render inoperative' air bags installed in passenger cars. However, your letter gives no indication that your company intends to perform repairs or other operations on air bags that have not yet deployed. Instead, your letter asks only about performing repairs on air bags that have already deployed. Deployed air bags have been 'rendered inoperative' by the forces that caused deployment, not by anything a repair business does after that deployment. Thus, it seems unlikely that any repairs your company performs on deployed air bags would violate the 'render inoperative' section of Federal law. Although there is no Federal law prohibiting the sort of repairs you asked about, your planned 'repair' of deployed air bags gives rise to a host of safety concerns. You will need to contact the manufacturer of each vehicle on which you repair an air bag to learn the exact formula and amount of gas generant in the inflator canister for each air bag. This would be necessary to ensure that the 'repaired' air bag will inflate at the time and in the manner intended by the original manufacturer. Additionally, you will need to replace the crash sensors, the inflation mechanism, and other electronic parts. Again, you will need to contact the vehicle manufacturer to obtain specifications for the performance of these electronic components. You will also need to refold and lubricate the fabric of the air bag in the same manner as the original air bag. If you fail to exactly duplicate the equipment and procedures used in the original air bag, your company could significantly reduce or even eliminate the protection that would have been provided by the original air bag. This, in turn, could expose your company to substantial liability under State laws for such repairs. You may wish to consult a private attorney for more information in this regard. I hope this information is helpful. Sincerely, Paul Jackson Rice Chief Counsel"; |
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ID: aiam0137OpenMr. William O. Green, Jr., Payne, Barlow and Green, Attorneys-at-Law, 2496 Austell Road, Austell, GA 30001; Mr. William O. Green Jr. Payne Barlow and Green Attorneys-at-Law 2496 Austell Road Austell GA 30001; Dear Mr. Green: Thank you for your letter of January 23, 1969, to William Haddon, Jr. M.D., requesting information on Federal standards for child restraint devices.; I am enclosing a copy of Federal Motor Vehicle Safety Standard No. 209 Seat Belt Assemblies - Passenger Cars, Multipurpose Passenger Vehicles, Trucks and Buses' which includes requirements for a Type 3 seat belt assembly for persons weighing not more than 50 pounds and capable of sitting upright by themselves.; The technical requirements of the present standard No. 209 wer previously included in Standards for Seat Belts for Use in Motor Vehicles (15 CFR Part 9, 31 F.R. 11528)' which was incorporated by reference in the initial Standard No. 209. I am also enclosing copies of these previous documents.; We are in the process of developing a standard for child car seats an I am enclosing a copy of a recently issued Notice of Proposed Rule Making on this subject. It is important to note that this is only a *proposed* regulation and the requirements may be modified somewhat when the final rule is published. However, this proposed rule indicates those safety features which are considered to be important for a child car seat.; There are no other existing Federal standards on child restrain systems for use in motor vehicles.; Sincerely, Clue D. Ferguson, Director, Office of Standards o Crash-Injury Reduction, Motor Vehicle Safety Performance Service; |
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ID: aiam5335OpenMr. Adam A. Freund Manager, Testing Services Standards Testing Laboratories, Inc. Post Office Box 592 1845 Harsh Avenue, S.E. Massillon, OH 44648; Mr. Adam A. Freund Manager Testing Services Standards Testing Laboratories Inc. Post Office Box 592 1845 Harsh Avenue S.E. Massillon OH 44648; Dear Mr. Freund: This responds to your letter addressed to th attention of Walter Myers of my staff in which you asked whether Table II of Federal Motor Vehicle Safety Standard (FMVSS) No. 119, New pneumatic tires for vehicles other than passenger cars, contains certain errors. You pointed out in your letter that Table I of FMVSS 119 specifies a plunger diameter of 5/16 inch for motorcycles, and 3/4 inch for 12-inch or smaller rims other than motorcycles. Table II, on the other hand, leaves blank the plunger diameter space in the motorcycle column, but lists 5/16 inch plunger diameter in the 12-inch or smaller rim column. You indicated your belief that the inconsistency is due to a typographical error in those columns of Table II and asked us to confirm your interpretation. Your observation is correct. A November 13, 1973 rule adopting Tables I and II (38 FR 31299) (copy enclosed) specifies the 5/16-inch diameter plunger for motorcycle tires, and the 3/4-inch diameter plunger for 12-inch or smaller tires and 17.5-inch or smaller light truck tubeless tires. Accordingly, the plunger diameter for the motorcycle column in Table II should read 5/16. Similarly, the 12-inch or smaller column in the current Table II is in error in specifying a plunger diameter of 5/16 inch. The correct plunger diameter for that column in Table II should be 3/4 inch to correspond with the plunger diameter specified for 12-inch or smaller rims in Table I. Thank you for bringing this error to our attention. The agency will issue a correction to avoid any further confusion. Sincerely, John Womack Acting Chief Counsel; |
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ID: 07-005006--13 May 08--rlsOpenMs. Stefanie Siverly Intertek 4700 Broadmoor SE, Suite 200 Grand Rapids, MI 49512 Dear Ms. Siverly: This responds to your letter requesting an interpretation of whether aftermarket tire pressure monitoring systems (TPMS) would be subject to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 138, Tire pressure monitoring systems. I apologize for the delay in responding. You state that your company is a testing laboratory and that you have a client who is distributing TPMS as an aftermarket item. Specifically, you state that your client produces both mechanical systems (where the vehicle operator would look at a gauge installed on the tire stem) and electronic systems (where there is a device which can be mounted or stored in the vehicle which alerts the operator to low pressure). Based on the information you have provided and the analysis below, we have concluded that the aftermarket products you describe would not directly be subject to FMVSS No. 138. However, if these aftermarket TPMS devices are installed on vehicles already equipped with TPMS, installation of the devices could be subject to the statutory prohibition against making items of motor vehicle safety equipment inoperative. By way of background, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue FMVSSs that set performance requirements for new motor vehicles and items of motor vehicle equipment (see 49 U.S.C. Chapter 301). NHTSA does not provide approvals of motor vehicles or motor vehicle equipment. Instead, manufacturers are required to self-certify that their products conform to all applicable safety standards that are in effect on the date of manufacture. NHTSA selects a sampling of new vehicles and equipment each year to determine their compliance with applicable FMVSSs. If our testing or examination reveals an apparent noncompliance, we may require the manufacturer to remedy the noncompliance, and may initiate an enforcement proceeding, if necessary, to ensure that the manufacturer takes appropriate action. As noted above, some FMVSSs apply to motor vehicles, some apply to motor vehicle equipment, and some apply to both. FMVSS No. 138 is a vehicle standard, specifying performance requirements for tire pressure monitoring systems on new vehicles.[1] The standard does not apply to aftermarket TPMS. However, there are several provisions of the National Traffic and Motor Vehicle Safety Act (49 U.S.C. 30101 et seq., the Safety Act) that have a bearing the manufacture and sale of aftermarket TPMS. First, 30122(b) of the Safety Act states, in relevant part: Prohibition. A manufacturer, distributor, dealer, or motor vehicle repair business may not knowingly make inoperative any part of a device or element of design installed on or in a motor vehicle or motor vehicle equipment in compliance with an applicable motor vehicle safety standard. In general, this section prohibits the entities listed in 30122 from removing, disabling or otherwise making inoperative any of the safety systems or devices installed on the vehicle to comply with a safety standard. Therefore, the question of whether installation of an aftermarket TPMS violates the render inoperative prohibition is linked to whether the vehicle in which the aftermarket TPMS is being installed originally was subject to FMVSS No. 138. (We assume the modification of the vehicle is by an entity listed in 30122.) If the vehicle in which the aftermarket TPMS is being installed was not originally certified as meeting FMVSS No. 138, under our regulations the aftermarket TPMS could be installed without regard to FMVSS No. 138 requirements. On the other hand, if a compliant TPMS that had been installed in the vehicle in compliance with FMVSS No. 138 were removed and replaced by the aftermarket TPMS, the removal of the compliant TPMS would violate the render inoperative prohibition unless the vehicle, as equipped with the aftermarket TPMS, meets the performance requirements of FMVSS No. 138. The second provision of our safety statute of which you should be aware relates to the responsibilities of motor vehicle equipment manufacturers to ensure that their products are free of safety-related defects. An aftermarket TPMS is an item of motor vehicle equipment. Manufacturers of motor vehicle equipment are subject to the requirements in sections 30118-30122 of Title 49 of the U.S. Code concerning the recall and remedy of products with defects related to motor vehicle safety. If a manufacturer or NHTSA determines that an item of motor vehicle equipment contains a safety-related defect, the manufacturer would be responsible for notifying purchasers of the defective equipment and remedying the problem free of charge. I hope this information is helpful. If you have any further questions, please do not hesitate to contact Rebecca Yoon of my staff at (202) 366-2992. Sincerely yours, Stephen P. Wood Acting Chief Counsel ref:138 d.3/10/09 [1] S2, Application, of the TPMS standard states that This standard applies to passenger cars, multipurpose passenger vehicles, trucks, and buses that have a gross vehicle weight rating of 4,536 kilograms (10,000 pounds) or less, except those vehicles with dual wheels on an axle, according to the phase-in schedule specified in S7 of this standard. 49 CFR 571.138. |
2009 |
ID: 07-005414--13 Feb 08--saOpenMr. Kiminori Hyodo Deputy General Manager, Regulation & Certification Koito Manufacturing Co., Ltd. 4-8-3, Takanawa Minato-Ku Tokyo Japan Dear Mr. Hyodo: This is in response to your letter, in which you asked about the origin of the required visibility angle in Figure 20 of Federal motor vehicle safety standard (FMVSS) No. 108, Lamps, Reflective Devices, and Associated Equipment. Specifically, you ask whether the origin of the visibility angle for FMVSS No. 108, Figure 20 is identical to that described in Economic Commission for Europe (ECE) R.48, i.e., the intersection of the axis of reference with the exterior lens of the lighting device. As discussed below, our answer is no. It is our opinion that the referenced Society of Automotive Engineers (SAE) standard (SAE J575e) makes clear that the photometric measurement is made at a distance between the light source of the lighting device and the point of measurement specified for the lighting device, and in the case of the filament light sources you have provided as examples, the light source of the device is the filament itself. Thus, the measurement is made from the filament center, and not from the exterior lens. By way of background, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue FMVSSs that set performance requirements for new motor vehicles and items of motor vehicle equipment (see 49 U.S.C. Chapter 301). NHTSA does not provide approvals of motor vehicles or motor vehicle equipment. Instead, manufacturers are required to self-certify that their products conform to all applicable safety standards that are in effect on the date of manufacture. NHTSA selects a sampling of new vehicles and equipment each year to determine their compliance with applicable FMVSSs. If our testing or examination reveals an apparent noncompliance, we may require the manufacturer to remedy the noncompliance, and may initiate an enforcement proceeding if necessary to ensure that the manufacturer takes appropriate action. Our August 11, 2004 Final Rule (2004 Final Rule) amended the visibility requirements of FMVSS No. 108 and consolidated all the visibility requirements in a new paragraph, S5.3.2. 69 Fed. Reg. 48805. As you pointed out in your letter, S5.3.2(b)(2) states that [w]hen a vehicle is equipped with any lamp listed in Figure 20 of this standard, each such lamp must provide a luminous intensity not less than specified in Figure 20 in any direction throughout the pattern defined by the corner points specified in Figure 20 for each such lamp. The luminous intensity must be measured in accordance with the photometry test requirements of the applicable SAE Standards and Recommended Practices incorporated by reference or sub-referenced in this standard. As you further pointed out in your letter, SAE J575e (Tests for Motor Vehicle Lighting Devices and Components) is incorporated by reference in FMVSS No. 108, and states that the photometric measurement shall be made at a distance between the light source and the point of measurement specified for the lighting device. SAE J575e goes on to define the V axis as the line formed by the intersection of a vertical plane through the light source of the device This indicates that the light source is the origin of the beam in a lighting device, or, in the devices you gave as illustrative examples in your letter, the filament center. Moreover, while the 2004 Final Rule sought to improve compatibility of our lighting requirements with those of the [ECE], the new geometric visibility requirements you seek clarification on did not entirely harmonize FMVSS No. 108 with ECE R.48. In the 2004 Final Rule, the agency recognized that one of the many ways ECE R.48 visibility requirements differed from FMVSS No. 108 requirements was that ECE R.48 contains a definition for angles of geometric visibility, whereas the specifications for lighting tests in FMVSS No. 108 are all in SAE J575e, which is incorporated by reference. 69 Fed. Reg. 48805, 48806. In your letter, you suggest that since the new luminous intensity method Figure (Figure 20) was introduced to increase compatibility with ECE, the origin of the visibility angle for Figure 20 is identical to that described in ECE R.48. We disagree. Since NHTSA declined to adopt ECE R.48s definition of angles of geometric visibility in the 2004 Final Rule, we effectively retained the photometry measurements as specified in SAE J575e. Accordingly, we believe that the angles of measurement required in Figure 20 are to be measured from the light source of the lighting device, and in the lighting devices you have provided as illustrative examples, the measurement should be made from the filament center. If you have any further questions, please do not hesitate to contact Sarah Alves of my staff at (202) 366-2992. Sincerely yours, Anthony M. Cooke Chief Counsel ref:108 d.4/17/08 |
2008 |
ID: 07-005877 sheathOpenMs. Lori J. Fuller Ms. Sara L. Dill 608 N. Main St. Washington, IL 61571 Dear Ms. Fuller and Ms. Dill: This responds to your letter asking about the requirements of the National Highway Traffic Safety Administration (NHTSA) for a device you call the seatbelt buckle safety sheath, an aftermarket product you have developed that would prevent children in booster seats from unbuckling a seat belt. Based upon the information you provided this agency and as is explained more fully below, we have determined that no Federal motor vehicle safety standard specifically applies to your product. However, as a manufacturer of motor vehicle equipment you would have certain responsibilities under our laws. By way of background information, NHTSA is authorized under the National Traffic and Motor Vehicle Safety Act (49 U.S.C. Chapter 301; the 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. NHTSA, however, does not approve motor vehicles or motor vehicle equipment or pass on the compliance of a vehicle or item of equipment outside the context of an actual enforcement proceeding. 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 our understanding of the information set forth in your letter. You explain that your device is designed to be used with existing seat belt assembly systems in motor vehicles. According to your letter, the sheath is a tubular rectangle made from resilient material, designed to slip over the the female portion of the seatbelt buckle. You state that the area of the sheath that is over the release button provides a stiffened resilience to the normal operation of the release button, so that a greater force than normal, not capable of being applied by a young child, is required to unfasten the seatbelt. There is currently no Federal motor vehicle safety standard (FMVSS) that applies to your product. FMVSS No. 209, Seat Belt Assemblies, sets forth requirements for new seat belt assemblies. Your product does not meet the definition of a seat belt assembly, so the standard would not apply. Although we do not have any standards that directly apply to your product, you should be aware of 30122 of the Safety Act, Making safety devices and elements inoperative. That section prohibits motor vehicle manufacturers, dealers, distributors, or repair businesses from knowingly making inoperative devices or elements of design installed in a motor vehicle or on an item of motor vehicle equipment, such as a vehicle seat belt assembly, in compliance with the FMVSSs. There are several seat belt elements of design that could be affected by your product. Subparagraph (d) Buckle release of S4.3 Requirements for hardware, of FMVSS No. 209 requires the pushbutton release for any buckle on a seat belt to have a minimum area for applying the release force. Subparagraph (d) also requires the buckle to release when a specified maximum force is applied. By design, your product would cover the button and not allow the buckle to release under the amount of force required by the standard. Subparagraph (e) of FMVSS No. 209 specifies that a belt assembly must be provided with a buckle or buckles readily accessible to the occupant to permit his easy and rapid removal from the assembly, and that the buckle release mechanism must be designed to minimize the possibility of accidental release. If your device would interfere with the vehicles compliance with these requirements, under 30122 the commercial establishments listed in that section could not install your device on customers seat belt assemblies. Section 30122 does not apply to individual owners installing aftermarket equipment on their own vehicles. However, it is our policy to encourage vehicle owners not to tamper with or otherwise degrade the safety of safety systems. We recommend that you evaluate carefully whether your product would in any way degrade the performance of vehicle seat belts. For example, you should ensure that your product would not interfere with seat belt retraction or release in an emergency, that any sharp edges used with your product would not cause deterioration of the belt webbing, and that the device does not result in excessive loading of the abdomen of a child. The device should not degrade the flammability-resistance of the seat belts. In addition, as a manufacturer of motor vehicle equipment, you are responsible for ensuring that your product is free of safety-related defects (see 49 U.S.C. 30118-30121). The agency does not determine the existence of safety defects in motor vehicles or motor vehicle equipment except in the context of a defect proceeding. Please note also that the States have the authority to regulate the use of vehicles, and may have restrictions on the use of devices that restrict the release of seat belt buckles. We suggest that you check with your attorney or insurance company about State law considerations, including your responsibilities under State tort law. I hope this information is helpful. If you have further questions, please contact Deirdre Fujita of my staff at 202-366-2992. Sincerely yours, Anthony M. Cooke Chief Counsel
ref:208 d.11/21/07 |
2007 |
ID: 07-005943drnOpenMs. Amy B. Kaus Application Engineer Tesa Tape North America 5825 Carnegie Boulevard Charlotte, NC 28209
Dear Ms. Kaus: This responds to your request for an interpretation regarding the National Highway Traffic Safety Administrations (NHTSAs) Federal motor vehicle theft prevention standard, 49 CFR Part 541 (Part 541). The issues raised by your letter are addressed below. By way of background, the purpose of Part 541 is to reduce the incidence of motor vehicle thefts by facilitating the tracing and recovery of parts from stolen vehicles. Part 541 requires certain passenger motor vehicles to have identifying numbers affixed or inscribed on specified parts. See 541.5(a). The standard specifies a number of label requirements for affixing the identifying number to a part. See 541.5(d) and (d)(1). Among other things, 541.5(d)(1)(v) specifies: (v) Removal of the label must (A) Cause the label to self-destruct by tearing or rendering the number on the label illegible, and (B) Discernibly alter the appearance of that area of the part where the label was affixed by leaving residual parts of the label or adhesive in that area, so that investigators will have evidence that a label was originally present. In your letter, you ask several questions related to possible qualifications or limitations with respect to these and other requirements for labeling, e.g., related to temperature range, chemicals, etc. Part 541 specifies the relevant label requirements to which vehicles must be certified. While we will address your specific questions below, our general answer is that Part 541 does not include the kinds of limitations or qualifications you ask about. We also observe that the requirements address situations where persons would be deliberately seeking to remove and/or alter labels in the context of vehicle theft, and should be understood in that context. Specifically, you asked for additional qualification of the term self-destruct by tearing in 541.5(d)(1)(v), quoted above. You suggested the following three qualifications: 1) the label must tear immediately when lifted from the surface to which applied; 2) the label must tear within a specified temperature range, without the use of tools or solvent; 3) under no conditions may the label be removed in one piece. We believe the quoted language is sufficiently clear and decline to provide qualifications. You also cited a NHTSA interpretation[1] concerning child restraint system (CRS) labels that cited an American Society for Testing Materials (ASTM) standard for CRSs in connection with the meaning of permanent. You asked whether conditions under which an anti-theft label must perform have been defined, such as temperature, environment, chemicals, etc. Again, Part 541 does not specify such limitations. Finally, you asked about the standing of SAE J1892 Recommended Practice for Bar-Coded Vehicle Emission Configuration Label and SAE J1877 Recommended Practice for Bar-Coded Vehicle Identification Number Label, when determining whether a label meets Part 541 requirements. None of these recommended practices has been incorporated by reference into Part 541, and they do not qualify or otherwise limit the requirements of that regulation. I hope this information is helpful. If you have any other questions, please contact Dorothy Nakama of my staff at (202) 366-2992. Sincerely yours, Anthony M. Cooke Chief Counsel ref#541 d.11/20/08 |
2008 |
ID: 07-005970--28 Feb 08--saOpenMs. Marine Jacotot Regulation Department Heuliez Cerizay 7. rue Louis Heuiliez BP 70209 79142 CERIZAY Cedex France Dear Ms. Jacotot: This is in response to your e-mail regarding free motion headform (FMH) impact test requirements for upper interior components in Federal Motor Vehicle Safety Standard (FMVSS) No. 201, Occupant Protection in Interior Impact (S6.3), as they relate to your companys retractable hardtop (RHT) roof system. Specifically, you seek confirmation of your interpretation that by excluding any target located on a convertible roof frame or on a convertible roof linkage mechanism, S6.3(a) also excludes any target on a decorative trim located such that during a FMH test, the trim would be between the forehead of the headform and the roof linkage mechanism or convertible roof frame. Based on the information you provided in emails on October 17, 2007 and December 13, 2007, and the analysis below, the National Highway Traffic Safety Administration (NHTSA) disagrees with your interpretation as it applies to the Peugeot 206 CCs RHT roof system. S6.3(a) of FMVSS No. 201 provides that a vehicle need not meet the requirements of S6.1 through S6.2 (the FMH impact requirements) for any target located on a convertible roof frame or a convertible roof linkage mechanism. Convertible roof frame is defined in S3 as the frame of a convertible roof. Convertible roof linkage mechanism is defined in S3 as any anchorage, fastener, or device necessary to deploy a convertible roof frame. In an April 5, 2002 letter we sent your company, we interpreted the S6.3 exclusion as it applies to RHT roof systems and hardtops for convertibles. NHTSA determined that with the exception of those components required to raise and lower the top or to latch it into position, RHT roof systems and detachable hardtops for convertibles must meet the FMH impact requirements of FMVSS No. 201. Previously addressing the application of the FMH impact test requirements to convertible roof systems, in an April 1998 Federal Register notice denying petitions for reconsideration, NHTSA rejected a request to modify the definition of convertible roof frame to include RHTs. We explained that the S6.3 exclusion of convertible roof frames and linkage mechanisms from the FMH impact requirements existed because the presence of a countermeasure such as padding would interfere with the frame and linkage mechanisms movement. We further reiterated that rigid convertible tops could produce head injuries and that the agency believed that protection should be provided for all the hard areas inside a vehicle unless it is not practicable to do so. 63 Fed. Reg. 19839, 19840. NHTSA noted that the petitioner did not submit any data indicating that convertible hardtops cannot be made as flexible as a conventional roof structure. The agency determined that since convertible roof frames and linkage mechanisms are excluded from FMH impact tests, the design of the remainder of the convertible hardtop roof should not present additional compliance difficulties. Id. The photographs and information you sent us was for the Peugeot 206 CCs RHT roof system. This vehicles RHT roof system consists of two moving, rigid panel sections. This RHT roof system retracts and deploys by the movement of two metal arms along the length of both panels of the roof on both sides, in the longitudinal direction. The two panels are connected by the movable metal arms, and by two joints located at the outer edges of the rigid panels. In your photographs, you have denoted these two joint areas, which consist of a metal side of the joint (facing the exterior of the vehicle) and a plastic side of the joint (facing the interior of the vehicle), as the roof joint mechanisms. The user secures the RHT to the vehicle frame by manually locking two front latch mechanisms, which each consist of a fixed striker on the A-pillar, a hook on the RHT, and a handle. The edges of the roof closest to the movable metal arms have a plastic trim that runs along the length of both sides of the rigid roof panels. The trims purpose is to cover the movable metal arms when the roof is deployed in the coupe configuration. Since the trim is linked to the roof, the trim moves when the roof moves, and thus is stowed with the roof when the RHT is in the convertible configuration. The two front latch mechanisms and the two roof joint mechanisms appear to be components necessary to raise and lower the top or to latch it into position. Thus, under S6.3, the vehicle need not meet the FMH impact requirements for any target located on these components. Because the trim moves and stows with the roof panels (and not with the movable arms), it appears that the trim is more a part of the roof than a part of the components necessary to raise and lower the roof or to latch it into position. It does not appear to us that the presence of a countermeasure such as padding would interfere with the trims movement, or that the trim cannot be made as flexible as the rest of the roof structure. Accordingly, while the roof joint mechanisms and front latch mechanisms are excluded from being targets for the FMH impact tests, the plastic trim on the Peugeot 206 CCs RHT roof system that covers the metal bars would not be excluded as a target in the FMH impact tests. This trim covering the movable metal arms is distinguished from any plastic pieces on the front latch mechanisms or roof joint mechanisms, which we do consider excluded from being a target in the FMH impact tests, because we consider those plastic pieces to be parts of the front latch mechanisms and roof joint mechanisms. We hope this answers your questions. If you have any further questions, please do not hesitate to contact Sarah Alves of my staff at (202) 366-2992. Sincerely yours, Anthony M. Cooke Chief Counsel ref:108 d.4/29/08 |
2008 |
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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
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