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: 2663oOpen Mr. Jay Costa Dear Mr. Costa: I am responding to your letter seeking an interpretation of Standard 217, Bus Window Retention and Release (49 CFR /571.217). Specifically, you expressed concern that some transit system passengers are opening the rear emergency exits on your public transit vehicles. Apparently, some passengers open these emergency exits to commit acts of vandalism. You state that "in the interest of safety the rear emergency window (in these vehicles) should be removed and replaced with a non-operable type window." You asked whether Standard 217 would prohibit your body shop from modifying your transit buses in this manner. Assuming that your body shop does not hold itself out to the public as a business that repairs motor vehicles for compensation, the shop would not be prohibited from modifying the buses as you describe. Under paragraph S5.2.1 of Standard 217, buses that have a gross vehicle weight rating of 10,000 pounds or more (such as your transit buses) must have at least one rear emergency exit, unless the configuration of the bus precludes installing an accessible rear exit. The manufacturer of your buses has stated that the bus configuration does not preclude installing an accessible rear exit. Therefore, your manufacturer must deliver buses that are equipped with a rear emergency exit. On the other hand, your repair shop is subject to different considerations. Section 108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1397(a)(2)(A)) prohibits certain commercial establishments from "rendering inoperative" any device or element of design included on or in a vehicle in compliance with an applicable safety standard. In your example, the rear emergency exit is an element of design included in the buses in compliance with an applicable safety standard, and removing these exits would render inoperative that element of design. However, the "render inoperative" prohibition applies only to manufacturers, distributors, dealers, or motor vehicle repair businesses. A "motor vehicle repair business" is defined in /108(a)(2)(A) as "any person who holds himself out to the public as in the business of repairing motor vehicles or motor vehicle equipment for compensation." Please note that the "render inoperative" provision does not apply to a vehicle owner. The vehicle owner may modify his or her vehicle without violating any Federal requirements, irrespective of whether the modification affects the vehicle's compliance with a safety standard. Assuming that your transit system body shop does not hold itself out to the public as being in the business of repairing motor vehicles for compensation, it can make the modification you describe without violating any Federal requirements. The problem you describe apparently involves the design for releasing the kind of emergency window exit in your vehicles. Standard 217 does not require a specific design for releasing an emergency exit. Rather, the Standard sets out a ceiling for the magnitude of force necessary to release the exit, and a required direction for applying the release force. The transit system could replace the "operable" rear emergency window with a push-out window or other type of design that would still meet the release requirements of Standard 217, yet make it difficult or impossible for a passenger to commit the acts of vandalism you describe. Please note that the purpose of our emergency exit requirements for buses is to facilitate quick and safe rider exit in the event of an emergency. Though nothing prohibits you from modifying the vehicles to close off the rear emergency exit, I urge you to give your fullest consideration to the implications of making this modification. It is NHTSA's position that compliance with Standard 217 is the safest way to facilitate vehicle exit in an emergency, and it is my opinion that you needn't eliminate the rear window exit to resolve your problem. Further, you might want to check with the State of Washington to learn if it prohibits modifications that would make your transit buses no longer comply with Standard 217. I hope you find this information helpful. Sincerely,
Erika Z. Jones Chief Counsel ref:VSA#217 d:2/23/88 |
1988 |
ID: 2663yOpen Samson Helfgott, Esq. Dear Mr. Helfgott: This is in reply to your letter of June ll, l990 (Your file CAIN 8877), with respect to the permissibility under Standard No. l08 of the use of amber lamps on the rear of motor vehicles. You have referenced our letter to you of March 30, l989, on the use of a single amber lamp adjacent to, but separate from, the center highmounted stop lamp. Your client wishes to utilize the amber center lamp in conjunction with rear amber turn signal lamps to provide an amber triangular array on the rear. The array would be activated when the ignition is turned on, and remain activated except when the stop lamps were activated (which, with the red center lamp, provide a red triangular array). With respect to the triangular amber lamp array you have asked the following four questions: "l. The possibility of utilizing the amber turn signals as tail lights, instead of the red tail lamps. This is the same as is now in effect on the front of all vehicles." Standard No. l08 requires that the color of taillamps be red. Therefore amber turn signal lamps could not serve as substitutes for taillamps. Your comment about frontal lighting is not exactly in point. A turn signal lamp may be combined with a parking lamp (provided the requirements for each are met) but Standard No. l08 requires that both be amber in color. "2. The possibility of supplementing existing tail lamps with the presence of the amber lamps." We do not regard this as a true supplement because the color of the array differs from that of the taillamps required by Standard No. l08. However, like taillamps, the array is intended to indicate the presence of a vehicle. The question is, whether an array of three amber lamps would impair the effectiveness of the required two red taillamps. As we advised in our letter of March 30, l989, additional lighting equipment is permissible as long as it does not impair the effectiveness of the lighting equipment that the standard requires. We cautioned that you should consider whether steady-burning amber lamps might confuse following drivers, who would probably be unused to seeing steady burning amber lamps on the rear of a vehicle. Because you have not informed us as to the intended candela of the array, we cannot advise with any assurance whether the amber array would impair the effectiveness of the required red taillamps. Certainly if the candela of the triple amber arrray exceeded that of the red taillamps a basis would appear to exist for a judgment of impairment. "3. The possibility of using the amber lamps as daytime running lamps on the rear of a vehicle." Under this scenario, the amber array would function as daytime presence lamps, a function not provided by any rear lighting system required by Standard No. l08. The question therefore is whether such a system would impair the effectiveness of the signal lamps required by Standard No. l08. These are hazard warning signals, turn signals, and stop lamps. With respect to the hazard warning signals, these operate through the turn signal lamps, and, although operable when the vehicle is in motion, they are designed to operate when the ignition is not on (i.e., when the triple array would be deactivated). Therefore, we do not believe that the triple array would impair the effectiveness of the hazard warning signals. As for impairment of the turn signals, we must distinguish between those that are amber and those that are red. Again, we raise the possibility that confusion could exist if the candela of the triple array exceeds that of an amber turn signal system. It is imperative that following drivers understand without hesitation the signals provided by other vehicles in front of them. Confusion may be less likely to exist if the required signal lamp and the triple array differ in color. Concerning the stop lamps, you have informed us that the triple array is deactivated when the stop lamps come on. In this event, there would be appear to be no impairment of the stop signals. "4. The possibility of utilizing the 'amber triangular array' as described above." In our view, no specific Federal rulemaking appears required for your client to offer its system for installation on motor vehicles, subject to the constraints expressed in this letter and the letter of March 30, l989. As the earlier letter explains, the determination of whether there is impairment is initially made by a manufacturer who wishes to offer the system as new vehicle equipment. In the aftermarket, installation of the system must not, in effect, result in impairment of required lighting equipment, but nevertheless the system is subject to State and local lighting laws. We have forwarded a copy of your letter and our response to the agency's Office of Research and Development for their information. We appreciate your client's interest in motor vehicle safety. Sincerely,
Paul Jackson Rice Chief Counsel ref:l08 d:9/l7/90 |
1970 |
ID: 2664oOpen Captain Robert W. Barthelmess Dear Captain Barthelmess: This is in reply to your letter of December 30, 1987, to this agency with respect to the requirements for importing tires without the DOT symbol. You have asked whether the DOT symbol must still appear on the tires of vehicles that conform to the U.S. Federal motor vehicle safety standards. The answer is yes; there has been no change in the requirement that the DOT symbol appear on the sidewall of tires manufactured as either original or replacement equipment. The DOT is the manufacturer's certification of compliance with all applicable Federal motor vehicle safety standards. In your letter, you stated that one individual at the Army Air Force Exchange Service indicated that the DOT symbol had been replaced by a series of numbers. This individual may have confused the requirement for the DOT symbol with a different Federal requirement for an identification number to appear on tires. The tire identification number, among other things, assists in the tracing and recalling of tires which may prove to be noncomplying or defective. The requirement for the tire identification number is in addition to, not in place of, the requirement for the DOT symbol. You have also asked (with reference to service personnel like yourself who recently bought non-DOT marked tires for your U.S. type automobiles) whether there is a technical possibility of denial of entry to vehicles certified as meeting U.S. safety specification but equipped with tires not bearing the DOT symbol. The general procedure is that when a motor vehicle arrives at the port of entry it will be inspected to see whether it bears the manufacturer's certification of compliance (generally in the driver's door post area). We do not know whether Customs makes it a practice to inspect vehicles of U.S. origin for this certificate when a serviceman is returning to the States. If an inspection occurs and the vehicle bears the certification, the vehicle is admitted without further inspection. It is possible, of course, that a Customs inspector could happen to notice in passing the lack of the DOT symbol on the tires. In this instance, as the vehicle would not be in conformity with all applicable standards, the Customs inspector could require entry of the vehicle under bond, which would be released upon the importer's production of a statement to this agency that the noncompliance had been corrected. Although we are not aware of any instance in which this has actually happened, you may wish to contact Customs with respect to its inspection procedures. You may also wish to write Goodyear asking for a statement that the Vector tires comply with Standard No. 109, which could be presented to Customs should questions arise. I hope that this answers your questions. Sincerely,
Erika Z. Jones Chief Counsel ref:MIS d:2/24/88 |
1988 |
ID: 2664yOpen Mr. A. Roger Hirstein Dear Mr. Hirstein: This is in reply to your letter of June 1, l990, to Taylor Vinson of this Office. One of your customers has asked whether 3M's Diamond Grade Reflective Sheeting can be used in a red and white block pattern on the side of a trailer for conspicuity without violating Standard No. l08. Your interpretation is that the Sheeting can be used in addition to devices meeting the requirements of Standard No. l08 but not in place of them. You are essentially correct. However, because we do not know both the pattern and location of the design, whether "side" includes the front and rear of a trailer, the reflective qualities of your sheeting, who will apply the sheeting, and whether the application will occur before or after delivery of the trailer to its purchaser, we can only provide general guidelines. Under S5.1.3 of Standard No. l08, supplementary reflective devices, i.e., devices other than those required by the standard, may be installed and present on vehicles at the time of their first sale as long as they do not impair the effectiveness of lamps and reflectors required by the standard. The initial determination of whether there is impairment is to be made by the manufacturer who certifies that the vehicle complies with all applicable Federal motor vehicle safety standards. If that decision appears incorrect to the agency, NHTSA will advise accordingly. After the initial sale, the supplementary reflective devices may be installed by a manufacturer, dealer, distributor, or motor vehicle repair business subject to the limitation in section 108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act that such installation not "render inoperative in whole or in part" any of the lighting equipment required by Standard No. l08. There is no statutory prohibition under the Act against owner modifications, even if they involve impairing or removing devices required by Standard No. l08. However, the trailer would still remain subject to the laws of the individual States in which the trailer is registered and operated, and (if applicable), to the regulations of the Office of Motor Carrier Standards of the Federal Highway Administration. Sincerely,
Paul Jackson Rice Chief Counsel / ref:l08 d:9/l4/90 |
1970 |
ID: 2665oOpen The Honorable Charles Wilson Dear Mr. Wilson: This is in response to your letter of December 9, 1987, to Ms. Brenda Brown, Office of Congressional Affairs, Department of Transportation, which has been forwarded to this Office for reply. Unfortunately, the Department has no record of receiving your previous letter of August 19, 1987. You have written on behalf of your constituent Mr. W. P. Brandon of Palestine who has designed a "Wide Right Turn" signal for installation on the rear of trailers. The device consists of the words "Wide Right Turn" and an arrow, in black on a "caution yellow" background. The device is attached to the lower right rear of a trailer, and flashes when the turn indicator is positioned for a right turn. Mr. Brandon asks three questions with respect to his device, which I shall answer shortly. Preliminarily let me note that the applicable Federal law and regulation are, respectively, the National Traffic and Motor Vehicle Safety Act of l966, and Federal Motor Vehicle Safety Standard No. l08 Lamps, Reflective Devices, and Associated Equipment. Standard No. l08 permits a supplementary lighting device such as Mr. Brandon's as original trailer equipment if it does not impair the effectiveness of the lighting equipment that Standard No. 108 requires, such as the standard turn signal system. The Vehicle Safety Act permits it as aftermarket trailer equipment if its installation by a person other than the trailer owner does not render inoperative, wholly or in part, equipment installed on the trailer pursuant to Standard No. l08 or any other safety standard. With these general remarks in mind, we reach the three questions that Mr. Brandon asked. "l. Is there any rule regarding the placement of a flashing 'Wide Right Turn' signal on the lower right rear of a trailer?" The answer is no, as long as there is no impairment of the effectiveness of the other rear lamps (i.e., the standard turn signal must continue to operate when the lever is in the position indicating a right turn, but the wide turn signal should not operate when the hazard warning signals (which operate through the turn signal lamps) are on). "2. Can the signal be black letters on a safety yellow background or should it be another color"? The agency does not prescribe the color of supplementary lighting devices, and color is subject only to the "impairment" restriction. Required lighting equipment on the rear of trailers may be white (back up lamps), amber (turn signals), or red (the alternative color for turn signals, and the required color for taillamps and stop lamps). I am unsure what "safety yellow" is, but it would not appear to impair the effectiveness of the red, amber, or white lamps on the trailer's rear. "3. Are there any restrictions on manufacturing of the signal insofar as materials or construction are concerned?" There are no Federal restrictions or requirements. However, supplementary lighting devices such as Mr. Brandon's are subject to regulation in all their aspects by the States in which they will be sold and used. We are not conversant with State regulations on this subject, and suggest that, for further advice, Mr. Brandon contact the American Association of Motor Vehicle Administrators, 120l Connecticut Ave., N.W., Washington, D.C. 20036. We appreciate Mr. Brandon's interest in safety, and your writing us with respect to his "Wide Turn Signal" device. Sincerely,
Erika Z. Jones Chief Counsel ref:l08 d:2/19/88 |
1988 |
ID: 2665yOpen Mr. Dean A. Palius Dear Mr. Palius: This responds to your letter to Steve Kratzke of my staff, seeking an interpretation of the effects of a procedural provision that appears in the compliance test procedures for Standard No. 208, Occupant Crash Protection, but not in the standard itself. Specifically, you asked whether crash testing under Standard No. 208 must be conducted only with a tow road 500 feet in length. I am pleased to have this opportunity to explain our laws and regulations for you. Before addressing your specific question, it might be helpful to begin with some general background information. Each of this agency's safety standards specifies test conditions and procedures that this agency will use to evaluate the performance of the vehicle or equipment being tested for compliance with the particular safety standard. NHTSA precisely follows each of the specified test procedures and conditions when conducting its compliance testing. In addition to the test conditions and procedures set forth in the safety standards themselves, the agency has provided guidelines to the test facilities that the agency enters into contracts with to conduct compliance tests for the agency. These guidelines are called compliance test procedures. The compliance test procedures are intended to provide a standardized testing and data recording format among the various contractors that perform testing on behalf of the agency, so that the test results will reflect the performance characteristics of the product being tested, not differences between the various testing facilities. The compliance test procedures must, of course, not be inconsistent with the procedures and conditions that are set forth in the relevant safety standard. However, the compliance test procedures do, on occasion, specify procedures and conditions that go beyond what is set forth in the relevant standard. These more detailed test procedures and conditions are requirements only for the contractor test facility in conducting tests on behalf of the agency. With that background, I will now address your specific question. A manufacturer must certify that its vehicles will comply with the requirements of Standard No. 208 when they are tested in accordance with the procedures set forth in various sections of the standard, including S5, S8, S10, and S11. These sections specify that the vehicle shall be traveling longitudinally forward at any speed up to and including 30 miles per hour (mph). However, these sections do not specify any particular length for a tow road for crash testing. Accordingly, the manufacturer's certification of compliance with Standard No. 208 may be based on tests using a tow road of any length, provided that all applicable conditions in Standard No. 208 are satisfied. You correctly noted that NHTSA's compliance test procedures currently specify that the tow road should be at least 500 feet in length. This length was chosen for agency compliance testing to ensure the test dummies' positioning would not be affected by the acceleration of the vehicle and that the test dummies' positioning would be stabilized before impact. Tow roads of this length also allow sufficient room to abort the test if needed. Please note that, although a manufacturer is not required to use a 500-foot tow road in its certification testing, a shorter tow road that affected the dummies' positioning might not provide an adequate basis for certifying that the tested vehicle complies with the occupant protection requirements of Standard No. 208. Please feel free to contact Mr. Kratzke at this address or by telephone at (202) 366-2992 if you have any further questions on this subject. Sincerely,
Paul Jackson Rice Chief Counsel ref:208 d:9/l4/90 |
1970 |
ID: 2666yOpen Mr. William Shapiro Dear Mr. Shapiro: This responds to your letter about the built-in child seat Volvo has designed for the center rear seating position. The built-in seat uses the vehicle's lap-shoulder safety belt to restrain the child. I regret the delay in responding. You indicated in a telephone conversation that Volvo is considering designing the seat solely for children who weigh more than 50 pounds. Such a seat is not subject to the requirements of Standard 213 because the seat is not a "child restraint" as that term is defined in the standard. Paragraph S4 of Standard 213 defines a child restraint system as "any device, except Type I or Type II seat belts, designed for use in a motor vehicle to restrain, seat, or position children who weigh not more than 50 pounds." The agency would determine whether your built-in seat is designed solely for children weighing more than 50 pounds by considering available indications of the manufacturer's design intent, e.g., the physical suitability of the seat for use by children who weigh less than 50 pounds, and the manner in which the seat is labeled and marketed. The agency would look to see whether the seat is clearly and permanently labeled to show the size and age of children intended to be restrained by the system. We would also consider any indications in Volvo's marketing efforts and point of sale materials regarding the size and age of child that the seat is designed to restrain. Finally, we would consider any size and age information included in the vehicle's owner manual. You also indicated Volvo may consider designating the seat as suitable for children weighing more than 40 pounds. If the seat were so designated, it would no longer be a seat designed solely for children weighing more than 50 pounds, and therefore be a child restraint system subject to Standard 213. You ask whether, if Standard 213 applies to your seat, the standard permits such a seat. You state that the seat would meet the labeling and performance requirements of the standard. You believe that Standard 213 permits the seat because the final rule that amended 213 to set requirements directly applicable to built-in seats (53 FR 1783; January 22, 1988) said that paragraph S5.4.3.3 of the standard allows child restraint systems other than a 5-point harness system. You are correct that the standard does not require the use of a harness in a child restraint system. Paragraph S5.4.3.3 provides, in part, that "each child restraint system . . . that has belts designed to restrain the child" must comply with the specific requirements of S5.4.3.3 (i.e., provide upper and lower torso restraint, and a crotch restraint (for seats for children weighing over 20 pounds), of a specific form). The definition of a "child restraint system" specifically excludes the vehicle's lap/shoulder belts from the coverage of the standard. Thus, under that definition and the language of S5.4.3.3, the specific requirements of S5.4.3.3 on harness systems applies only to seats that have belts, and not to a seat such as yours that uses the vehicle's belt system. Please note that Standard 213 sets limits on knee excursion for built-in seats (S5.1.3.1(b)). Thus, although your seat is not required to have a crotch strap, the seat must be designed to prevent a child from sliding excessively forward and down, legs first ("submarining"). The agency would like to emphasize its concern that when a vehicle lap belt is used with a child restraint system to restrain a child, the lap belt should be positioned so that it does not apply impact loads to the abdomen of the child, the area most vulnerable to the forces imposed by the belt. Instead, the vehicle lap belt should be held in place by the child restraint so that it passes over the pelvis of a child, the area of the body best able to withstand the forces imposed by the vehicle belt. We cannot determine from your drawing whether the vehicle lap belt would be properly positioned and securely held by the restraint. The instructions for the proper use of the built-in seat that are required by S5.6.2 of the standard should inform users how to properly adjust the belt system, so to avoid submarining and imposing impact loads to the child's abdomen. The agency is also concerned that the sitting height of some children who may occupy the seat might not be high enough for the shoulder belt to be properly positioned when attached. Instead, the belt might pass in front of the child's neck or face. For those cases, if no other option is available, NHTSA believes that the shoulder belt should be placed behind the child's back. We recommend that you include information in the printed instructions about such adjusting of the shoulder belt for small children. As a reminder, NHTSA will use these adjustment instructions per S6.1.2.3.1 to position the three year old dummy in the seat if the agency tests the seat in its compliance program. Sincerely,
Paul Jackson Rice Chief Counsel /ref:213 d:9/l4/90 |
1970 |
ID: 2667yOpen Mr. Robert Roden Dear Mr. Roden: This responds to your questions about the requirements for key-locking systems in section S4.2(b) of Federal Motor Vehicle Safety Standard No. 114, Theft Protection (49 CFR 571.114). As explained below, the enclosed copy of the agency's recent final rule amending this provision may be relevant to your inquiry (55 FR 21868, May 30, 1990). By way of background, the National Traffic and Motor Vehicle Safety Act, ("Vehicle Safety Act," 15 USC 1381 et seq.) requires every new motor vehicle sold in the United States to be certified as complying with all applicable Federal motor vehicle safety standards. The Vehicle Safety Act specifies that the manufacturer must certify that each of its vehicles complies with all applicable safety standards in effect on the date of manufacture. Any person violating the Vehicle Safety Act by manufacturing or selling new noncomplying vehicles may be liable for potential penalties of $1,000 per violation up to $800,000 for a related series of violations. One such Federal safety standard is Standard No. 114, Theft Protection, which applies to passenger cars, and to trucks and multipurpose passenger vehicles having a gross vehicle weight rating of 10,000 pounds or less. Your first question asked whether section S4.2(b) requires key locking systems to prevent removal of the ignition key except when the transmission is in the "park" position. Section S4.2(b) currently requires such vehicles to have a "key-locking system that, whenever the key is removed, will prevent...(b) either steering or forward self-mobility of the vehicle, or both." However, the agency has recently amended section S4.2(b) to read as follows: Each vehicle shall have a key-locking system that, whenever the key is removed, prevents: (a) the normal activation of the vehicle's engine or motor; and (b) either steering or forward self-mobility of the vehicle or both. For a vehicle equipped with an automatic transmission with a "park" position, the key-locking system shall prevent removal of the key unless the transmission or transmission shift lever is locked in "park" or becomes locked in "park" as the direct result of removing the key. You should be aware that this amendment takes effect on September 1, 1992. For vehicles manufactured before September 1, 1992, S4.2(b) merely requires that when the key is removed, the key-locking system must prevent steering or forward self-mobility, or both. This provision does not address the issue of the transmission's position at the time of key removal. In contrast, under the recent amendment applicable to vehicles manufactured on or after September 1, 1992, S4.2(b) requires automatic transmission vehicles to prevent removal of the key unless the transmission or transmission shift lever is locked in "park" or becomes locked in "park" as the direct result of removing the key. Your second question asked whether a replacement key-locking system is required to comply with Standard No. 114. Because Standard No. 114 applies to new motor vehicles and not to motor vehicle equipment, the standard does not in itself require aftermarket replacement systems to comply with its requirements. However, you should be aware that section 108(a)(2)(A) of the Vehicle Safety Act prohibits manufacturers, distributors, dealers, or motor vehicle repair businesses from knowingly "rendering inoperative," in whole or in part, any device or element of design installed on or in a vehicle to comply with an applicable safety standard. Your third question asked how long the key locking system is required to perform under S4.2(b) of the standard. The Vehicle Safety Act only requires manufacturers to assure that vehicles and equipment comply with applicable safety standards at the time of the first consumer purchase. However, please note that if at any time a manufacturer or the agency determines that a vehicle or item of equipment contains a safety-related defect, which could result from the failure of a system to operate properly, the manufacturer is required to notify all product purchasers of the defect and remedy the defect without charge. See 15 U.S.C. 1411-1414. I hope this information is helpful. If you have any further questions, please feel free to contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992. Sincerely,
Paul Jackson Rice Chief Counsel Enclosures ref:VSA#ll4 d:9/l9/90 |
1970 |
ID: 2668yOpen Mr. Hiroshi Kato
Dear Mr. Kato: This is in reply to your letter of September 4, l990, asking for an interpretation of paragraph S5.1.3 of Standard No. l08 with respect to two of Mitsubishi's contemplated rear lighting plans. In the first plan, the rear garnish panel located between the lamps that are mounted at the right and left extremities of the car would be dark but the word "Mitsubishi" in the center would be illuminated. In the second plan, the panel would be illuminated as a supplemental taillamp, and the word would not. You ask if either plan would create an "impairment" of the required lighting equipment, within the prohibition of S5.1.3. Judging by the photograph of the Pontiac Fiero that you enclosed, which featured a design similar to your first plan, it does not appear that this plan would create an impairment. We note that the backup lamp is located in the garnish panel, approximately l5 mm from the word "Mitsubishi", and this raises a question with respect to the second plan. When the taillamps are illuminated, so that there is a broad sweep of red light across the rear of the car, we would be concerned that the backup lamps in the garnish panel might not be readily perceived when activated. We would also be concerned that the illuminated panel might detract from the effectiveness of the stop lamps when they are activated. To ensure that the lighted panel creates no impairment of either the stop lamps or the backup lamps, it might be advisable to design it with an intensity that is lower than that of the adjacent taillamps. The determination of impairment is to be made by the vehicle manufacturer in its certification that the vehicle complies with all applicable Federal motor vehicle safety standards. Unless that determination appears clearly erroneous, NHTSA will not question it. I hope that this answers your question. Sincerely,
Paul Jackson Rice Chief Counsel ref:l08 d:9/26/90 |
1990 |
ID: 2669oOpen Ms. Beth Whitman Dear Ms. Whitman: This responds to your letter of September 25, l987, concerning the use of "steel duck-billed hammers" to change farm and truck tires. You expressed concern that a competitor is using a safety chart produced by NHTSA to support its claim that the use of these tools is prohibited. The NHTSA safety chart, "Safety Precautions for Mounting and Demounting Tube Type Truck/Bus Tires," includes two specific references to hammers/hammering. Under the heading "Deflation and Assembly," the chart states: "Never use a steel hammer to assemble or disassemble rim components--Use a lead, brass, or plastic type mallet. Proper tools are available through rim/wheel distributors." Under the heading "Assembly and Inflation," the chart states: "Never hammer on components of an inflated or partially inflated assembly." These precautions apply to steel hammers and hammering in general, and the chart does not state that steel duck billed hammers should not be used for other applications in changing tires. We note that you enclosed a copy of a July l3, l987 letter from the Occupational Safety and Health Administration (OSHA), stating the following: [OSHA] does not prohibit the proper use of a steel duck billed hammer for servicing wheels used on large vehicles such as trucks, tractors, trailers, buses and off-road machines. Under the OSHA regulations at 29 CFR l9l0.l77(d)(6), employers are required to furnish and assure that only tools recommended in the rim manual for the type of wheel being serviced are used to service rim wheels. Further, under 29 CFR l9l0.l77(f)(8), the regulations specify that: No attempt shall be made to correct the seating of side and lock rings by hammering, striking or forcing the components while the tire is pressurized. You state that you are concerned that your competitor's tool may not meet OSHA regulations and may be less than safe to use. We suggest that you contact OSHA about this concern. You may also wish to contact the Federal Trade Commission concerning your belief that your competitor's advertising is misleading. I hope this information is helpful. Sincerely,
Erika Z. Jones Chief Counsel ref:110#120 d:2/ll/88 |
1970 |
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.