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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search results table | |
ID: 3317oOpen Mr. Clarence M. Ditlow III Dear Mr. Ditlow: This responds to your most recent letter to me concerning retrofitting of cars originally equipped with rear seat lap belts with rear seat lap/shoulder belts. In my November 1, 1988 letter to you, I explained that we have sought the voluntary cooperation of manufacturers to make retrofit kits available for those customers who desire them and that the vehicle manufacturers have responded positively to our efforts. I also explained that the fact that retofit kits are not available for all model lines produced by each manufacturer does not suggest some failure on the part of the vehicle manufacturers or of our policy to encourage the manufacturers to make such retrofit kits available. In a November 7, 1988 letter, you asserted that my November 1 letter "reflects such callous disregard and ignorance of the facts as to defy belief that you are doing little more than covering up for a GM policy that will kill rear seat passengers." You stated that you would welcome a "substantive response" to this letter. I am happy to be able to give you such a response. Let me begin by emphasizing that the lap belts in the rear seat of most vehicles on the road today are effective in reducing the risk of death and injury in a crash. Based on our analysis of a number of crash data files, we estimate that rear seat lap belts saved about 100 lives and prevented over 1500 serious injuries in 1987 alone. These figures would have been substantially higher if more rear seat occupants used their lap belts. In fact, if everyone had worn their rear seat lap belts each time they rode in a vehicle, those belts would have saved about 660 lives and prevented more than 10,000 serious injuries in 1987 alone. These facts illustrate that the fastest and most effective way to save the greatest number of lives and prevent the greatest number of injuries is to convince the public to use the safety belts, including the rear seat lap belts, that are in their vehicles every time they ride in those vehicles. Because of these facts, I do not accept your assertion that GM's policy of not providing rear seat lap/shoulder belt retrofit kits for a few of their past models will "kill people." To the extent that reckless assertions like this tell the public that they should not wear their rear seat lap belts, it is unfortunate that you have chosen to divert attention away from the overriding issue of convincing the public to use their safety belts, and instead chosen to mislead the public about the quality of their safety belts. Even though lap belts have been proven to be effective in reducing the risk of death and injury in a crash, we agree that properly designed lap and shoulder belts have the potential to offer even greater crash protection than lap belts alone. For this reason, we have proposed to require that all new passenger cars sold in the United States be equipped with rear seat lap and shoulder belts beginning in the 1990 model year. Additionally, we have actively sought the car manufacturers' cooperation in providing retrofit kits to interested consumers. As you may know, every domestic manufacturer and many foreign manufacturers now offer retrofit kits for many of their vehicle models. You objected to General Motors' (GM) statement in its Information Bulletin that retrofit kits are not offered for its 1978-88 Oldsmobile Cutlass, Buick Regal, Chevrolet Monte Carlo, or Pontiac Grand Prix, "because GM safety engineers have concluded that in these cars, a rear seat lap/shoulder belt combination would not enhance the safety offered by the lap belt alone." You asserted that since Leonard Evans, a GM employee, has concluded that lap/shoulder belts are significantly more effective than lap belts and since the National Highway Traffic Safety Administration (NHTSA) is proposing to require rear seat lap/shoulder belts, there is no "possible scientific basis" for GM's conclusion. NHTSA's proposal reflects our tentative conclusion that rear seat lap/shoulder belts that are designed and installed at the factory have the potential to offer even greater crash protection than lap belts alone for vehicles in general. However, any particular vehicle model's floor pan design, seat stiffness, and seat design (as it relates to occupant posture) can affect the possibility of an occupant submarining under a lap/shoulder belt system in a crash. During the design and production of the vehicle, the vehicle manufacturer can take these factors into account to minimize the likelihood of such submarining and its associated consequences. However, this is emphatically not true for vehicles that were not originally engineered and designed to use rear seat lap/shoulder belts as original equipment. With respect to these vehicles, the effectiveness of a retrofitted rear seat lap and shoulder safety belt system may well depend on the belt system's compatability with the vehicle and the installation of the belt system. The suitability of a particular vehicle for retrofitting is therefore a complex question. It is our view that the judgment as to whether a retrofit lap/shoulder belt system should be installed in a particular vehicle is best made by a vehicle manufacturer, which is most familiar with the detailed seat and structural design and crash performance of the car. I hope this information is helpful. Please let me know if you have any further questions or would like some additional information on this subject. Sincerely,
Erika Z. Jones Chief Counsel ref:208 d:12/22/88 |
1988 |
ID: 08-002063asOpenInternational & Regulatory Affairs Valeo Lighting Systems 34, rue Saint-Andr 93 012 Bobigny Cedex France Dear Mr. Dorleans: This responds to your letter, in which you ask about the activation of daytime running lamps (DRLs) under the administrative rewrite version of Federal Motor Vehicle Safety Standard (FMVSS) No. 108, Lamps, Reflective Devices, and Associated Equipment. Specifically, you ask whether various LED (light-emitting diode) lamp designs, incorporating a parking lamp function in addition to other functions, can be used as DRLs under the new version standard. Our answer is that the new version of FMVSS No. 108 does not affect that opinion we provided in our April 29, 2008 letter to you. 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. On December 4, 2007, NHTSA published an administrative rewrite of FMVSS No. 108 (72 FR 68234). This rewrite was intended to present the existing regulatory requirements in a simpler, more straightforward manner, and to reduce the need to consult outside documentation. As we stated in the summary of the notice: This document amends the Federal Motor Vehicle Safety Standard (FMVSS) No. 108 on lamps, reflective devices, and associated equipment by reorganizing the regulatory text so that it provides a more straightforward and logical presentation of the applicable regulatory requirements, which includes the agencys interpretation of the existing requirements. This final rule does not impose any new substantive requirements on manufacturers. In a letter of interpretation we mailed to you on April 29, 2008, we stated: For the purpose of S5.5.11(a) [of the current version of FMVSS No. 108], the array of LEDs that you described in your letter, which can serve the function of parking lamps or other lamps depending on how they are activated, would not be considered parking lamps in either of the scenarios that you described. In DRL mode, the lamps would be substantially brighter than the parking lamps, and according to your letter, their photometric output would comply with the requirements of S5.5.11(a)(1), which sets minimum and maximum output for DRLs. This would result in effective DRLs, which is the intent of the requirement in FMVSS No. 108. This relayed our opinion that your lighting system was permissible under FMVSS No. 108. This opinion is not changed by the fact that the standard has been reworded. For reference, as you stated in your letter, the rewritten language (now in paragraph S6.1.1.4) reads: Daytime running lamps. A passenger car, multipurpose passenger vehicle, truck, or bus may be equipped with a pair of daytime running lamps (DRLs) as specified in Table I and S7.10 of this standard. DRLs may be any pair of lamps on the front of the vehicle, whether or not required by this standard, other than parking lamps or fog lamps. Therefore, the opinion expressed in our previous letter, that the lighting system that you propose is permissible under the standard, will still hold true when the new language for FMVSS No. 108 comes into effect. If you have any further questions, please contact Ari Scott of my staff at (202) 366-2992. Sincerely yours, Anthony M. Cooke Chief Counsel
d.1/16/09 |
2009 |
ID: 15208.ogOpenMr. Brent Gruenig Dear Mr. Gruenig: This is in response to your letter regarding a seating system which Crow River Industries is developing for the purpose of adapting vehicles for use by less-abled individuals. As described in your letter, the seat rotates on a pivot, allowing the seat to face out of the car, and two sets of slide tracks. One set of slide tracks is used for adjustment in the vehicle. The second set of slide tracks is used for exiting the vehicle after rotation. You are concerned about the legal implications of this design. In particular, you state that you understand that Crow River Industries cannot "make the vehicle inoperable or 'out of specification' with the replacement of the OEM seat with our seat." You wish to know what exactly is "out of specification." 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. Our agency is authorized under 49 U.S.C. 30101 et seq. to issue safety standards applicable to new motor vehicles and items of motor vehicle equipment. The National Highway Traffic Safety Administration (NHTSA), however, does not approve motor vehicles or motor vehicle equipment, nor do we endorse any commercial products. Instead, each manufacturer is responsible for "self-certifying" that its products meet all applicable safety standards. NHTSA has exercised its authority to establish five safety standards that may be relevant to your seat design. The first is Standard No. 207, Seating Systems, which sets forth strength requirements for all "occupant seats" in passenger cars. The second is Standard No. 208, Occupant Crash Protection, which sets forth requirements for occupant protection at the various seating positions in vehicles. The third is Standard No. 209, Seat Belt Assemblies, which sets forth strength, elongation, webbing width, durability, and other requirements for seat belt assemblies. The fourth is Standard No. 210, Seat Belt Assembly Anchorages, which establishes strength and location requirements for seat belt anchorages. The final relevant safety standard is Standard No. 302, Flammability of Interior Materials. This standard specifies burn resistance requirements for materials used in the occupant compartment of motor vehicles. Because Federal law operates differently depending on when the installation of the seat occurs, I will separately discuss three possible scenarios. Installation as Original Equipment Standards No. 207, No. 208, No. 210, and No. 302 apply, with certain exceptions that are not relevant to your product, to vehicles and not directly to items of equipment. Thus, the vehicle manufacturer, and not the equipment manufacturer, would be responsible for certifying that the vehicle complies with these standards with the adaptive seat installed in the vehicle. Installation Prior to First Sale If an adaptive seat were added to a new vehicle prior to its first sale, e.g., by the dealer, the person who modified the vehicle would be an alterer of a previously certified motor vehicle and would be required to certify that, as altered, the vehicle continues to comply with all of the safety standards affected by the alteration. Installation After First Sale After the first purchase of a vehicle for purposes other than resale, the only provision in Federal law that affects the vehicle's continuing compliance with an applicable safety standard is set forth in 49 U.S.C. 30122. That section provides that:
In general, the "make inoperative" prohibition would require repair businesses which modify motor vehicles to ensure that they do not remove, disconnect, or degrade the performance of safety equipment installed in compliance with an applicable safety standard. Any violation of this prohibition is subject to a potential civil penalty of up to $1,100 for each violation. In situations involving a potential violation of 30122, where a vehicle must be modified to accommodate the needs of a particular disability, we have, where appropriate, been willing to consider certain unavoidable violations of the "make inoperative" prohibition as purely technical ones justified by public need. However, it is often possible to make modifications in a way that does not degrade the performance of safety equipment installed in compliance with an applicable standard. If a company believes that certain modifications must be made to accommodate the needs of a particular disability, and that the modifications cannot be made without violating the "make inoperative" provision discussed above, it may write to us and request a letter stating that we will not enforce that provision. The letter should identify the specific facts at issue and why it is not possible to avoid violating that provision. It should also demonstrate that the proposed modifications minimize the safety consequences of the noncompliances. For your information, NHTSA is considering proposing a regulation establishing conditions under which a vehicle may be modified to accommodate a person's disability so that the modifier will not be subjected to the make inoperative requirements of 30122. Enclosed is a copy of page 22101 of the agency's April 25, 1997 regulatory agenda where this possible rulemaking is described (entry number 2266). I hope this information has been helpful. If you have any other questions or need some additional information in this area, please contact Otto Matheke of my staff at this address or by phone at(202) 366-5253. Sincerely, John Womack Enclosure ref:208 |
1997 |
ID: 11241Open Mr. Richard P. Cuvala Dear Mr. Cuvala: This responds to your letter of September 10, 1995, concerning "conference and display vehicles" you have been asked to manufacture for a client. The vehicles used are cargo vans with a gross vehicle weight rating of 9200 pounds. You convert the cargo area of the van to a product display and conference area. Your letter contained an illustration of the vehicle, indicating an L-shaped seating area behind the driver and front passenger seats. Your letter states that this area is not intended for transport of people. You asked whether such a vehicle must comply with "seating and occupant orientation and restraint directives." As explained below, the seats in such a vehicle would have to comply with federal standards on seats and seat belts if the modification is done prior to the first retail sale of the vehicle. By way of background information, the National Highway Traffic Safety Administration (NHTSA) is authorized 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 does not approve or certify any vehicles or items of equipment. Instead, each manufacturer is required to certify that its motor vehicles comply with all applicable Federal safety standards prior to their sale or import. NHTSA's certification regulations are set forth in 49 CFR Part 567. Conversion Prior to Sale Your letter does not state whether the conversion of the cargo area of these vehicles is done before or after the first retail sale of the vehicles. Prior to the first retail sale of a vehicle, the vehicle is considered to be "new." If the conversion is done prior to the first retail sale, your company would be considered an "alterer" under our regulations. A person who alters a previously certified new vehicle also must certify that the altered vehicle complies with all applicable standards (49 CFR '567.7). The seats in a new vehicle must comply with federal regulations if they are "designated seating positions." A "designated seating position" is defined in 49 CFR 571.3 as: any plan view location capable of accommodating a person at least as large as a 5th percentile adult female, if the overall seat configuration and design is such that the position is likely to be used as a seating position while the vehicle is in motion. While you indicate that the vehicles are not intended to transport people except in the front seats, the design of the seating area is similar to other vehicle seats. Therefore, it appears from their design that these seats are likely to be used and are therefore designated seating positions. NHTSA has exercised its authority to establish five safety standards which could be relevant to seats in these vehicles: Standard No. 207, Seating Systems (49 CFR 571.207), Standard No. 208, Occupant Crash Protection (49 CFR 571.208), Standard No. 209, Seat Belt Assemblies (49 CFR 571.209), Standard No. 210, Seat Belt Assembly Anchorages (49 CFR 571.210), and Standard No. 302, Flammability of Interior Materials (49 CFR 571.302). Standards Nos. 207, 208, 210, and 302 apply, with certain limited exceptions not relevant to your conversion, to vehicles and not directly to items of equipment. Standard No. 207 establishes requirements for seats, their attachment assemblies, and their installation to minimize the possibility of their failure in a crash. Standard No. 207 does not require a specific orientation for seats. However, some of the requirements are different for side- and rear-facing seats like those illustrated in your attachment. Standard No. 208 specifies seat belt requirements for seating positions in vehicles. For the seats in the rear of your vehicles, Standard No. 208 would require lap belts at each designated seating position. Standard No. 210 specifies performance requirements for seat belt anchorages. Standard No. 302 specifies burn resistance requirements for materials used in the interior of motor vehicles. Standard No. 302 would affect not only the seats, but also installation of other materials in these vehicles. Standard No. 209 applies to seat belt assemblies as separate items of motor vehicle equipment, regardless of whether the belts are installed as original equipment in a motor vehicle or sold as replacements. Thus, the manufacturer is required to certify that the seat belts comply with Standard No. 209. If you do not manufacture the seat belts yourself, you should install only belts certified by their manufacturer. This is true regardless of whether the conversion occurs before or after the first sale of the vehicle. Conversion After Sale If the conversion is done on a used motor vehicle, you do not have to certify that the vehicle complies with Standards Nos. 207, 208, 210, and 302. However, 49 USC '30122 provides, in pertinent part: 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. . . . Thus, you could not convert these vehicles if the conversion affected a device or element of design, installed prior to sale, so as to cause the vehicles to no longer comply with any of the safety standards. 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. Sincerely,
Samuel J. Dubbin Chief Counsel ref:207#208#209#210#302 d:12/8/95
|
1995 |
ID: 11247Open Dorothy Jean Arnold, M.D. Dear Dr. Arnold: This responds to your letter asking whether the air bags in your car can be disconnected. You explained that you are physically impaired by the effects of osteomyelitis, a disease of the bones; cannot use a seatbelt with comfort; and were Agranted dispensation from such usage several years ago.@ In a telephone conversation with Richard Reed of this agency, you indicated that you are 74 years old, 5 feet, three inches tall, and must sit close to the steering wheel because of your medical condition. As explained below, our answer is that NHTSA will not institute enforcement proceedings against a repair business that disconnects an air bag on your vehicle to accommodate your condition. Standard No. 208, Occupant Crash Protection, requires that cars be equipped with automatic crash protection at the front outboard seating positions. The air bags in your car were installed as one means of complying with that requirement. The removal or deactivation of one of those air bags by a vehicle dealer is governed by a provision of Federal law, 49 U.S.C. '30122. The section provides that: 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. However, in limited situations in which a vehicle must be modified to accommodate the needs of a person with a particular disability or a person's special medical needs, NHTSA has in the past stated that it would consider violations of the "make inoperative" prohibition as purely technical ones justified by public need, and that it would not institute enforcement proceedings. I would like to caution you that both safety belts and air bags are very important items of safety equipment. Safety belts are the primary means of occupant restraint, and work in all types of crashes. NHTSA estimates that in 1994, safety belts saved almost 9,200 lives and prevented more than 211,000 moderate to critical injuries. The combination of wearing safety belts and having an air bag installed at a seating position provides vehicle occupants with maximum safety protection in all types of crashes. Also, air bags are designed to offer some protection even when safety belts are not used. Since 1987, air bags are estimated to have saved 911 lives. NHTSA strongly encourages vehicle occupants to wear their safety belts, since we are concerned about the much higher safety risk faced by unbelted occupants. We understand, however, that you cannot wear your safety belt for medical reasons, and that you are concerned about a possible safety risk from the air bag in such a situation. While air bags have an impressive overall performance record and are designed to provide some protection even for unbelted occupants, NHTSA has become aware of situations in which current air bags have undesired side effects. These include situations in which an air bag appears to have contributed to serious injuries and even death to vehicle occupants, in minor-to-moderate severity crashes. Information indicates that an air bag might pose a risk of serious injury to unrestrained small statured and/or older people, in particular. I note that NHTSA has recently issued a request for comments (copy enclosed) concerning the agency=s actions to minimize the adverse side effects of air bags and to invite the public to share information and views with the agency. Since your disability prevents you from wearing your safety belt, and given your age and size, the disability places you in a situation where there may be a risk of serious injury from the air bag. While this particular risk can be addressed by disconnecting the air bag, there are trade-offs: Disconnecting the air bag subjects you to a higher risk in crashes, especially higher-speed crashes, where the air bag would provide protection. We urge you to carefully weigh the trade-offs in making your decision. If you decide that the risk to you from the air bag offsets the potentially life-saving benefits of the air bag, and you wish to have your air bag deactivated, we would regard the deactivation a purely technical violation of the "make inoperative" prohibition justified by public need. Accordingly, we would not institute enforcement proceedings against any person listed in section 30122 who deactivated the air bag. I would recommend that the manufacturer of the vehicle and/or air bag be consulted on the safest way to disconnect the air bag. I also note that the air bag should only be disconnected from a position where you would be seated. In addition, I strongly encourage you to ensure that every person in your vehicle who can use his or her safety belt does so. I want to add a caution. The purpose of the "make inoperative" prohibition is to ensure, to the greatest degree possible, current and subsequent owners and users of your vehicle are not deprived of the maximum protection afforded by the vehicle as newly manufactured. Accordingly, if you were to sell your vehicle later, we urge that the air bag be reactivated for the subsequent driver. I hope that this letter resolves your problem. If you have any other questions, please contact Edward Glancy of my staff at this address or by phone at (202) 366- 2992. Sincerely,
Samuel J. Dubbin Chief Counsel Enclosure Ref:208 d:12/ll/95
|
1970 |
ID: 11879B.jegOpen Joseph W. Phebus, Esq. Dear Mr. Phebus: This responds to your letter of May 7, asking about warning requirements for the lap belts provided with "motorized passive seat belts, such as utilized by Ford Motor Company." We assume that you are referring to a seating position equipped with both a motorized automatic shoulder belt certified to the automatic protection requirements of Standard No. 208, and with a separate manual lap belt. You ask whether certain warnings about fastening the lap belt were (a) required, (b) permitted, or (c) prohibited. The lap belt for such a seating position was not required by the Federal motor vehicle safety standards but was instead voluntarily provided by the vehicle manufacturer to provide additional occupant protection. While automatic belts are required to have a special warning system (see S4.5.3.3 of Standard No. 208), no warning requirement applied to the voluntarily provided lap belt. While none of the warnings you ask about were required, there is an issue, discussed further below, of whether they were permitted. Manufacturers may provide features in addition to those required by a standard, as long as the standard's requirements are met. The specific warnings you ask about are as follows: 1. "That the chime that sounds when the lap belt is not buckled should be repeated at least twice at intervals of approximately one minute if the belt is not buckled." Such a warning would not be permitted. S4.5.3.3 requires a warning system for automatic belts that, among other things, "activates a continuous or intermittent audible signal for a period of not less than 4 seconds and not more than 8 seconds and that activates a continuous or flashing warning light visible to the driver for not less than 60 seconds," to warn that the belt is not in use. Since the purpose of the audible signal is to remind the driver to buckle up, it would be permissible to use the same signal to warn that the voluntarily provided lap belt is not in use. However, since the audible signal could not be activated for a period of more than 8 seconds, the system you describe would not be permitted. I also note that NHTSA is limited by its authorizing statute as to what types of audible signals it may require, or permit as a means of compliance, to indicate that a safety belt is not in use. Under 49 U.S.C. 30124, a motor vehicle safety standard "may not require or allow a manufacturer to comply with the standard by using ... a buzzer designed to indicate a safety belt is not in use, except a buzzer that operates only during the 8-second period after the ignition is turned to the "start" or "on" position." (Emphasis added.) 2. "The seat belt symbol light should remain on for at least one minute after the ignition is turned on and then flash off and on at 0.5 CPS for about 30 seconds and then remain lighted if the lap belt is not buckled. Further, the brightness of the signal should be increased when the dashboard lights are not on." Assuming that the seat belt symbol light is only activated if the seat belts are not in use, such a system would be permissible. Since the purpose of the warning light for automatic belts is to remind the driver to buckle up, it would be permissible to use the same warning light to indicate that the voluntarily provided lap belt is not in use. Unlike the time period specified for audible signals, S4.5.3.3 specifies a minimum but not a maximum time for activation of the warning light. Therefore, the warning light could remain activated to indicate that a lap belt is not buckled. 3. "There should be an express instruction "fasten lap belt" which is located so as to be easily observed by both the driver and the occupant of the right front seat." The Federal motor vehicle safety standards would not prohibit such a message. 4. "That sun visor warnings other than those used by Ford may be used which would employ colors and signal words and would communicate the nature of the hazards and potential consequences associated with not wearing the lap belts." The sun visor warnings provided by Ford were provided voluntarily, and the Federal motor vehicle safety standards would not prohibit different messages. We have assumed that the vehicle does not have air bags. Standard No. 208 requires specific sun visor warnings for vehicles equipped with air bags and restricts any additional information on the visor. See S4.5.1(b). If you have any further questions, please feel free to call Edward Glancy of my staff at (202) 366-2992. Sincerely, Samuel J. Dubbin Chief Counsel ref:208 d:8/7/96 |
1996 |
ID: 1985-02.16OpenTYPE: INTERPRETATION-NHTSA DATE: 04/16/85 FROM: AUTHOR UNAVAILABLE; Jeffrey R. Miller; NHTSA TO: Jeffrey Richard -- JBR Manufacturing TITLE: FMVSS INTERPRETATION TEXT: Mr. Jeffrey Richard JBR Manufacturing P.O. Box 415 Fairfield IA 52556
This responds to your letter inquiring about the Federal safety standards that would apply to a product you are planning to sell. You stated that the product is a 6 inch by 4 inch sheet of 1/8 inch thick semi-transparent rubber that is held on a side window of a vehicle by four suction cups. The purpose of the sheet is to shield vehicle occupants from the sun. The following discussion explains the applicability of our safety standards to your sun screen. Pursuant to the National Traffic and Motor Vehicle Safety Act, we have issued Federal Motor Vehicle Safety Standard No. 205, Glazing Materials, (49 CFR 571.205) which specifies performance and location requirements for glazing used in vehicles. These requirements include specifications for minimum levels of light transmittance (70% in areas requisite for driving visibility, which includes all windows in passenger cars).
Any manufacturer, dealer or other person who installs tinting films or other sun screen devices, such as those described in your letter, in new vehicles must certify that the vehicle as altered, continues to comply with the requirements of the standard. Thus, for example, the light transmittance through the combination of the sun-screening material and the glazing must be at least 70 percent in the case of glazing used in windows requisite for driving visibility. Similarly, the combination must also meet the other applicable requirements of the standard, such as the abrasion resistance requirements. After a vehicle is sold to the consumer, owners may alter their vehicles as they please, so long as they adhere to all State requirements. Under Federal law, an owner may install any device regardless of whether the installation adversely affects light transmittance. The agency does, however, urge owners not to install equipment which would render inoperative the compliance of a vehicle with our standards. Individual States govern the operational use of vehicles by their owners and therefore it is within the authority of the States to preclude owners from applying sun screens on their vehicles.
If a manufacturer, dealer, distributor or motor vehicle repair business installs the sun screen device for the owner of a used vehicle, then S108(a)(2)(A) of the Vehicle Safety Act may apply. That section provides that none of those persons may knowingly render inoperative any device or element of design installed on or in a motor vehicle or item of motor vehicle equipment in compliance with a Federal motor vehicle safety standard. Violation of the "render inoperative" provision can result in Federal civil penalties of up to $1,000 for each violation.
I am enclosing the sample of your product you sent with your letter. If you need further information, the agency will be glad to provide it.
Sincerely,
Original Signed By
Jeffery R. Miller Chief Counsel
Enclosure
JRB Manufacturing P.O. Box 415 Fairfield, IA 52556 (515) 472-7249 Jeffrey Richard
To whom it may concern:
We are proud to have solved the problems of the glare form the sun, of the automobile driver and its passengers, with our all new Glare Stopper.
The Glare Stopper is a great help for stopping glare from babies eyes, while sitting in the required car seat. It is also a big help for the driver from glare when the sun is too low for the sun visor, or too far over. The Glare Stopper will easily stick, or adhere to, the glass, with its suction cups. It is easily moved with one hand. The Glare Stopper works well for coverage of the side mirror at night, when headlights blind driver from seeing ahead, one only has to stick it to the side glass over the mirror. Passengers also enjoy the Glare Stopper to cover the glare in the rear windshield, as well as rear side windows. Driver enjoys the Glare Stopper to cover glare off the hood as well as glare coming in the side window, or when the glare comes in just beside the rear mirror. Glare Stopper now makes it safer for drivers to drive into the morning or evening sun. Being just about the size of a persons hand, 4" x 6", makes it easy to see around while being used by a passenger. For added safety, a warning label has been placed on the back of the Glare Stopper where it will obstruct driver's view. Glare Stopper is made of a durable rubber called jolite. It can't be torn, just cut. It is a semi-transparent material. I have spoken to the law officers and officials which were of the state of Iowa. They said the Glare Stopper didn't violate any of Iowa's obstruction or tint laws for automobiles, because it didn't cover a large portion of the windshield.
I did, however, want the approval of the National Highway Traffic Safety Administration.
This is my first invention and company establishment, therefore I'd appreciate full consideration of my product. I have enclosed one full sample, as well as, portions of the other colors, which they come in.
Thank you for your time and consideration.
Truly,
JRB Manufacturing Jeffrey Richard Owner/Inventor Manager/Salesman
P.S. The Glare Stopper's rough backside keeps it from reflecting the sun from your car into the eyes of an oncoming car. Enclosures |
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ID: 20872nhfOpenMr. Robert J. Carlson Dear Mr. Carlson: This responds to your letter requesting guidance as to whether you may obtain authorization to relocate or exchange the original manufacturer's driver's seat in your Ford/El Dorado National ParaTransit Buses, and as to whether you may add a driver's side air bag on-off switch. I regret the delay in responding. You explain that these Paratransit vans are used to transport people with disabilities, some of whom are seated in wheelchairs. You explain that your drivers must often assist the passengers with entering and exiting the van and with fastening their seatbelts. Your drivers generally exit to the right of the driver's seat due to concerns with roadside traffic. You explain that your drivers have experienced difficulty entering and exiting the vehicle because of the lack of room between the seat and engine component cover. Your drivers have complained of back, shoulder and arm pain. You also explain that an ergonomist has examined the vehicles and determined that the seats could cause work-related claims. You state that your drivers have threatened to take union and legal action against the City, Ford, and El Dorado National (the manufacturer of the paratransit buses). You have had three Ford seat bases and two seat back frames fail since March 1999. You believe that these seat base and seat back frame failures are caused by the frequent side to side movement of the drivers entering and exiting the vehicles. You explain that you did not experience these problems with your old paratransit buses which were equipped with heavy-duty air ride seats. You explain that you have investigated the possibility of either moving the existing seat back four inches or installing heavy-duty air ride seats. You state that Ford Motor Company has told you that any change to the driver's seat will void the vehicle's certification to the Federal motor vehicle safety standards (FMVSS) and release Ford of any safety or product liability. Specifically, you ask whether you may replace the original manufacturer's seats or move the existing seats back several inches, or add a driver's side air bag on-off switch. Your question is addressed below. We would like to begin by explaining that the National Highway Traffic Safety Administration (NHTSA) is authorized to issue Federal motor vehicle safety standards that set performance requirements for new motor vehicles and items of motor vehicle equipment. Manufacturers are required to certify that their products conform to our safety standards before they can be offered for sale. After the first sale of the vehicle, manufacturers, distributors, dealers, and repair businesses are prohibited from "knowingly making inoperative" any device or element of design installed on or in a motor vehicle in compliance with an applicable standard. In general, the "make inoperative" prohibition (49 U.S.C. 30122) requires businesses which modify motor vehicles to ensure that they do not remove, disconnect, or degrade the performance of safety equipment installed in compliance with an applicable standard. Violations of this prohibition are punishable by civil penalties of up to $1,100 per violation. Thus, a dealer or repair business could relocate or exchange the original manufacturer's driver's seat so long as such action did not negatively affect the vehicle's compliance with the Federal motor vehicle safety standards. The make inoperative prohibition does not apply to the actions of a vehicle owner in modifying his or her vehicle. Therefore, it does not apply to any of the modifications you may perform to the vehicles you own and use for paratransit. Thus, you may modify the vehicle regardless of the effect on compliance with FMVSSs. You may, however, wish to consult a private attorney concerning any state law implications associated with modifying your vehicles, including potential liability implications, and whether such modifications will void your warranty with Ford. We note that the purpose of the "make inoperative" prohibition is to ensure that current and subsequent owners and users of the vehicle are not deprived of the maximum protection afforded by the vehicle as newly manufactured. Therefore, we encourage you not to unnecessarily compromise the safety of the vehicles you modify. Finally, if you sell the vehicles, we urge you to advise the purchaser that the vehicle has been modified and consider repositioning the seat and reinstalling any removed safety equipment if appropriate. We are unsure why you would want to add a driver's side air bag on-off switch in the event that you relocated the driver seat rearward. Air bags create risks to persons who are too close to the air bag at the time of deployment. Relocation of the driver seat rearward would therefore appear to make it less likely, rather than more likely, that a person would be at risk from the air bag. It is possible, however, that relocation of the seat could adversely affect the air bag sensing system. Installing an air bag on-off switch would not resolve such a problem. We would urge you to consult with Ford about the potential consequences of relocating the seat and what actions could be taken to minimize any adverse safety consequences. I hope this information has been helpful. If you have any other questions or need some additional information in this area, please contact Edward Glancy of my staff at this address or by phone at (202) 366-2992. Sincerely, |
2000 |
ID: 1983-1.25OpenTYPE: INTERPRETATION-NHTSA DATE: 03/11/83 FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA TO: Ms. Susan Reilly -- Reilly Manufacturing TITLE: FMVSS INTERPRETATION TEXT:
Ms. Susan Reilly Reilly Manufacturing P.O. Box 51 Mt. Vernon, Iowa 52314
Dear Ms. Reilly:
This responds to your letter asking whether a motorcycle helmet fastener your company produces, called "Alpha Clip," complies with Federal requirements.
By way of background information, this agency does not give approvals of vehicles or equipment. The National Traffic and Motor Vehicle Safety Act places the responsibility on the manufacturer to ensure that its vehicles or equipment comply with applicable standards.
Safety Standard No. 218, Motorcycle Helmets, includes various minimum performance requirements for motorcycle helmets. The only requirement directly relevant to your fastener is the retention test, which is set forth at section S5.3. The letter you enclosed from the University of Southern California suggests that the clip passes that test.
I would note that Standard No. 218 only applies to new motorcycle helmets and not to replacement equipment for motorcycle helmets. Thus, unless your clip was sold as part of a new motorcycle helmet, the requirements of Standard No. 218 would not be directly applicable. (Please note, however, that the agency discourages helmet users from modifying their helmets. Section S5.6.1 of the standard requires that the following instruction be placed on helmets: "Make no modifications..")
I would also note that should a safety-related defect be discovered in your device, whether by the agency or by yourself, you as the manufacturer would be required under sections 151 et seq. of the Act to notify owners, purchasers, and dealers and provide a remedy for the defect. These provisions apply regardless of whether the device is covered by a safety standard. A copy of the Act is enclosed. Sincerely
Original signed by Frank Berndt, Chief Counsel
Reilly Manufacturing P.O. Box 51 Mt. Vernon, IA 52314 (319) 895-8479
Mr. Frank Berndt 400 Seventh St. SW Washington, DC 20590
Dear Mr. Berndt:
At the advice of Mr. Gilky of the NHTSA Safety Compliance Office I am writing for your judgement as to the compliance of our Motorcycle Helmet Fastener to Federal requirements. We believe the "Alpha Clip" meets all requirements and is a safe and reliable product. I have included the clip, packaged for mail order, for your review. As of now, we market only the clip, not O-rings or helmets, and the consumer is responsible for installation.
I have also included a copy of a (unreadable) of U.S.C.. He then tested our fastener as a public service. Since receiving his letter we've added a plastic vinyl cap fitted to the hook, creating an interference fit.
Other recent information is as follows: 1 The hook is designed to fold in within itself when tension is released (we are in the process of moving the design patented) 2. Made of nickel plated (unreadable) steelwire of .142 +.005 - .000 inches dia. Length .900 I .020 in., width l.l90 I .020 in., width .702 I .010 Weight .
3. Has a deformation point of 600 pounds tensile
4. Does not protrude from the helmet
5. Installs directly to helmet strap - nothing is removed from the helmet.
I have also sent a clip and information to Mr. B. Roven, Coordinator of Motorcycle Safety for the Iowa DOT, if you wish to contact him for comment. Please let us know your judgement on our clips compliance as soon as possible.
Thank you for your time and cooperation.
Sincerely, Susan Reilly June 3, 1983 Mr. Steve Reilly RR 2 Mount Vernon, IA 52314 Dear Steve, Thank you for sending your new retention clip to us for evaluation. Professor Hurt asked me to run some tests on it and give you some comments. The beauty of your clip design is that it could be retrofitted to most helmets providing a much more convenient method of fastening than conventional D-rings. The first test I did was to use your clip on a complete helmet for the actual DOT retention test. Enclosed is that portion of the standard. I used an Electro E3 which has an extremely strong retention system. This choice of helmets made your part the weak link. With the Reilly clip in place, the test result was 0.54 inch elongation @ 300 lbs., about normal for an Electro. The clip showed no deformation at this load. Taking the entire system up in loading, the strap began to slip at 640 lbs. when the unwelded ends of the clip deformed. This load at failure is typical for many helmets that pass the DOT requirements. The problem that your design has is answered by many industrial safety codes that require a safety snap latch on all hooks. This spring-loaded device swings inward when engaging the hook and then returns to block the throat of the hook creating a closed loop. Bell Tourlite bicycle helmets use a somewhat similar hook with a safety latch made by Fastex. A less satisfactory solution would be to close up the radius of the hook bend to create an interference fit onto the D-ring. Please feel free to send out any future revisions to us for evaluation. As with the better mousetrap, the world is ready for a better helmet retention strap fastener.
Sincerely, Original signed by David Thom, Laboratory Technician |
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ID: 1983-1.8OpenTYPE: INTERPRETATION-NHTSA DATE: 01/27/83 FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA TO: The Honorable Byron L. Dorgan, House of Representatives TITLE: FMVSS INTERPRETATION TEXT:
Dear Mr. Dorgan:
This responds to your letter to Secretary Dole, raising concerns expressed to you in a letter signed by Mssrs., Rick Herbel and Douglas Glove, two of your constituents. These gentlemen asked why school districts are not permitted to purchase vans which do not satisfy the comprehensive school bus safety standards, when such vans would "be used only for hauling cheerleaders, supplies and etc." These gentlemen noted that the capacity of these vans would be from 10 to 15 people, and that they would be more economical to use than a full-size school bus. As is more fully explained below, the answer is that the National Traffic and Motor Vehicle Safety Act, as amended (hereinafter referred to as "the Act"), together with the comprehensive safety standards for school buses (which the Act required this agency to issue) require that all vehicles designed to carry more than 10 persons which are significantly used to transport school students must be certified as meeting those safety standards. Ordinary passenger vans are not certified as doing such, and therefore cannot be so used.
In 1974, Congress passed the School Bus and Motor Vehicle Safety Amendments (Pub. L. 93-492; hereinafter referred to as "the Amendments"). The Amendments added to the Act the following definition of a school bus; "a passenger motor vehicle which is designed to carry more than 10 passengers in addition to the driver, and which...is likely to be significantly used for the purpose of transporting primary, preprimary, or secondary school students to or from such schools or events related to such schools; ..."(15 U.S.C. 1391(14)). Those Amendments also provided that, not later than 15 months after they were enacted, the National Highway Traffic Safety Administration had to promulgate minimum performance standards for specified aspects of safety performance. The Amendments specified further that these standards "shall apply to each school bus and item of school bus equipment which is manufactured in or imported into the United States on or after April 1, 1977." (15 U.S.C. 1392(i)(1)(B)).
Prior to this Congressional action, many school districts had used so-called "activity buses" to transport students to and from extra-curricular activities. The activity buses were used because they were said to be more comfortable, more prestigious, and so forth. The floor debates on the Amendments show that Congress was aware of the practice of using these activity buses, yet chose to specify a broad definition of school bus. Congress took this step to require vehicles used solely for extracurricular activities to meet the same safety standards as those used to transport the children to and from school. This decision was based partly on the fact that 150 children were killed in 1971 in school bus accidents (see 120 Cong. Rec. H8120, daily ed., August 12, 1974). The statistics since the Amendments were passed indicate that Congress' goal of greatly reducing these facilities has been accomplished by the school bus safety standards promulgated by this agency. In 1981, the last year for which complete statistics are available, there were 10 fatalities in school bus accidents.
There are two courses of action open to your constituents if they wish to purchase vans for extracurricular activities. First, they could purchase a smaller 9-passenger van, because these vehicles would not be considered school buses under the Congressional definition, which applies only to vehicles carrying more than 10 passengers. Second, they can purchase 15 passenger vans which have been modified and certified as complying with the school bus safety standards. A number of companies will make the necessary modifications to these vans so that they can be certified as complying with those standards.
If you have any further questions on this subject or need any further information, please do not hesitate to contact me. Sincerely, Original signed by Frank Berndt, Chief Counsel
Enclosure Constituents' Letter
Oct. 24, 1983
Representative Byran Dorgan Washington, DC
Dear Representative Dorgan,
We have a question on Federal Regulations on why School Districts can not purchase a van type vehicle from a local dealer without meeting full bus specifications when the van would be used only for hauling cheerleaders, supplies and etc. The capacity is from 10 to 15 people and this includes the driver. This is more economical for a school to be able to handle a small group of people say 5 or 6 than to have to use a bus which gets poor mileage and cost considerably more to drive. Can the school purchase a van for small groups and hauling supplies and is this permissible in the regulation?
Thank you,
Sincerely, Original signed by Rick L. Herbel, Superintendent and Douglas Grove, Superintendent, Powers Lake High School Powers Lake, ND
December 9, 1983
Hon. Elizabeth Dole Secretary, Dept. of Transportation 400 Seventh Street SW Washington, DC 20590
Dear Secretary Dole:
The attached letter from a constituent raises some legitimate concerns about the regulations that are imposed on school bus vans. I would appreciate a review of this situation, and a reply to the letter that I have attached.
Sincerely, Original Signed By Byron L. Dorgan, Member of Congress |
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.