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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



Displaying 8861 - 8870 of 16514
Interpretations Date
 search results table

ID: nht88-3.75

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/20/88

FROM: LANCE E. TUNICK -- VICE PRESIDENT AND GENERAL COUNSEL MASERATI AUTOMOBILES INC

TO: ERIKA Z. JONES -- CHIEF COUNSEL NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION

TITLE: REQUEST FOR INTERPRETATION OF FMVSS 208

ATTACHMT: ATTACHED TO LETTER DATED 12/09/88 FROM ERIKA Z. JONES -- NHTSA TO LANCE E. TUNICK, REDBOOK A33, STANDARD 208; LETTER DATED 09/04/85 FROM JEFFREY R. MILLER TO STEPHEN T. WAIMEY AND DEAN HANSELL, STANDARD 208; LETTER DATED 11/10/75 FROM FRANK A. BERNDT TO JOHN B. WHITE, N40-30, SECTION 108(B)(5)

TEXT: Dear Ms. Jones:

Maserati Automobiles Incorporated (MAI) requests an interpretation of the requirements in S.4.1.3. of FMVSS 208 concerning the minimum annual production of passenger cars that must be equipped with passive restraints. More specifically, because the s tandard applies only to vehicles produced for sale in the U.S. and because, under Section 108 (b) (5) of the Safety Act, the standard does not apply to vehicles intended solely for export, MAI assumes that if, during a "phase-in" period, vehicles that we re previously imported into the U.S. by MAI are exported to Canada (where we have one dealer) would be deducted from the U.S. production total to arrive at the base figure to which the phase-in percentage would apply.

We would greatly appreciate your confirming this interpretation as soon as possible, so that we can report under 49 CFR Part 585.

Thank you.

Sincerely yours,

ID: nht88-3.76

Open

TYPE: INTERPRETATION-NHTSA

DATE: OCTOBER 21, 1988

FROM: BRADLEY J. BAKER -- PRESIDENT, CLASSIC MANUFACTURING, INC.

TO: TAYLOR VINSON -- LEGAL COUNCIL, U.S. DEPT. OF TRANSPORTATION

TITLE: NONE

ATTACHMT: ATTACHED TO AUGUST 31, 1989 LETTER FROM STEPHEN P. WOOD, NHTSA, TO BRADLEY J. BAKER, CLASSIC MANUFACTURING, INC.; [A34; STD. 108]

TEXT: Our company currently manufactures a Recreational car dolly used to tow a vehicle behind motorhomes. It is also used by car dealerships to retrieve cars and trucks.

We have a question regarding the 3 bar light cluster on the back of this unit. Is it a necessity? So far, we have to guess at our interpretation of the Federal laws. We don't know if this is considered a motor vehicle under FMVSS 108; 49 CFR 571.108. The National Truck Equipment Association could not answer this question and recommended we write to you.

We would appreciate your opinion on this matter. I can be reached at the following address:

Classic Manufacturing, Inc. 21900 W. U.S. 12 Sturgis, Mi 49091 Attn: Brad Baker (616) 651-9319 Fax No.(616) 651-2921

Thank you for your help in advance

Sincerely

ID: nht88-3.77

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/28/88 EST

FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA

TO: ANDREW P. KALLMAN -- TU-GROOVES

TITLE: NONE

ATTACHMT: LETTER DATED 1-14-85 TO OFFICE OF CHIEF COUNSEL -- NHTSA, FROM ANDREW P. KALLMAN -- DIRECTOR, KALLMAN MARKETING; LETTER DATED 2-8-88 TO ERIKA Z. JONES -- NHTSA, ATTN: SUSAN SCHRUTH, FROM ANDREW P. KALLMAN -- TU-GROOVES, OCC1569; TECHNICAL RESEA RCH CENTRE OF FINLAND INSTRUMENT LAB, RESEARCH REPORT NO. KOJ914, DATED 5-4-79, TEST NO. A310-78; TECHNICAL RESEARCH CENTRE OF FINLAND CHEMICAL LAB. RESEARCH REPORT NO. A901/75, DATED 2-4-75, STRENGTH OF THE GLASS, FROM K. HEINONEN; PATZIG TESTING LABORA TORIES CO. INC., REPORT ON 1/4 INCH CLEAR, LAMINATED, SAFETY GLASS, AS 1 WITH SAFETY GROOVES FOR USE ANYWHERE IN MOTOR VEHICLES, DATED 10-30-85, LAB NO. 219766

TEXT: This responds to your letter asking for further clarification of a March 1, 1985 letter to you from the Chief Counsel of this agency. Your company is marketing a process in which parallel grooves are ground into the lower portion of the windshield of ve hicles. In our March 1, 1985 letter to you, we set forth a general description of the requirements that would apply if the process were used on new vehicles or new windshields sold as an item of replacement equipment, and those requirements that would a pply if the process were used on vehicles that had already been sold to the first purchaser or windshields that were already installed in vehicles. Your letter explains that your company now uses this process only on vehicles that have already been sold to a first purchaser and windshields already installed in vehicles. You asked for clarification of several issues in your letter.

1. Your company has obtained test reports from two laboratories on the process of grinding these parallel grooves into the lower portions of windshields. One of these reports specifically states that windshields with these grooves fully comply with all requirements of Standard No. 205, Glazing Materials (49 CFR $ 571.205). You asked whether the steps your company has taken are "sufficient to show compliance with Standard No. 205."

Response: The National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.) does not permit this agency to assure any person or entity that its products or processes comply with all applicable requirements or to "approve" some product or process . Instead, section 114 of the Safety Act (15 U.S.C. 1403) requires the manufacturer itself to certify that its products comply with all applicable safety standards.

Standard No. 205 requires that the windshields installed in new vehicles and new windshields sold as replacement equipment to meet certain performance requirements, and requires the windshield to be certified as complying with those requirements. You ha ve stated that your company's process of grinding grooves into windshields will not be used on new

vehicles or new windshields. Standard No. 205 does not require that windshields be certified as continuing to comply after being treated by aftermarket processes, such as your company's grooving process. Accordingly, if your grooving process is used on ly in aftermarket applications, your company is not required to certify that those windshields continue to comply with Standard No. 205 after grooves have been ground into the windshield. However, continued compliance with Standard 205 is important, for a different reason, discussed below.

Even though Standard No. 205 does not directly apply to your process, and your company does not have to certify continued compliance with Standard No. 205, section 108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)) does impose an obligation on manu facturers, distributors, dealers, and repair businesses including your licensees, with respect to aftermarket processes. That section provides: "No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inopperative i n whole or in part any divice or element of design installed on or in a motor vehicle . . . in compliance with an applicable Federal motor vehicle safety standard . . ."

In this case, a number of elements of design have been installed in the windshield of motor vehicles in compliance with Standard No. 205, including impact and penetration resistance, optical deviation limitations and limitations on visual distortion. If grinding grooves into the windshield by means of your company's process would cause the windshield to no longer comply with these or some other requirements of Standard No. 205, grinding the grooves into the windshield would be a violation of the "rende r inoperative" provision of the Safety Act.

The Safety Act imposes a responsibility on manufacturers, distributors, dealers, and repair businesses to ensure, in the first instance, that none of the aftermarket operations they perform will result in a violation of the "render inoperative" provision . NHTSA reexamines the initial determinations made by any of these parties only in the context of an enforcement proceeding. If your company has concluded that the test reports enclosed with your letter show no "rendering inoperative" when grooves are ground into windshields, NHTSA will not express any view on that conclusion unless and until the agency begins some enforcement proceeding to examine this grooving process.

In keeping with this statutory scheme, neither our March 1, 1985 letter nor this letter expressed any agency opinion as to whether dealers using your company's process to grind grooves into windshields of vehicles would or would not render inoperative th e windshield's compliance with Standard No. 205. Instead, both these letters are intended only to alert your company to the elements of design that might be rendered inoperative by grinding grooves in windshields by your process.

2. Would it be possible for your company to indicate on the windshields in which you grind these grooves that your company has "shown compliance with Standard No. 205," for example, by affixing a clear sticker to that effect?

Response: As explained above, only new windshields or windshields installed in new vehicles must be certified as complying with Standard No. 205. There is no requirement that windshields subjected to

aftermarket processes be certified as still complying with the standard. If your company voluntarily chooses to provide some indication of continuing compliance, it is free to do so. NHTSA has long said that the only restriction on voluntary markings i s that those markings must not obscure or confuse the meaning of any required markings on the product. Assuming that your voluntary markings will not obscure or confuse the meaning of the required markings on the windshield, the voluntary marking would not violate any Federal requirements. You should be aware, however, that some State laws restrict stickers and other items placed on automobile windshields.

3. Is your company required to show continuing compliance with Standard No. 212, Windshield Mounting (49 CFR $ 571.212) for vehicles whose windshields have grooves ground in accordance with your company's process?

Response: The vehicle manufacturer is responsible for certifying that each of its new vehicles complies with the requirements of Standard No. 212. There is no obligation for any person that performs aftermarket operations on the vehicle or its windshiel d to certify continuing compliance with Standard No. 212.

As explained above, the only requirement applicable to aftermarket operations on a vehicle is that manufacturers, distributors, dealers and repair businesses are prohibited from "rendering inoperative" a vehicle's compliance with any safety standard, inc luding Standard No.212. Standard No. 212 requires a vehicle to retain a specified percentage of the windshield periphery. To avoid violating the "render inoperative" prohibition, I suggest that you carefully examine the process by which grooves are gro und into windshields and determine whether the installation of those grooves in accordance with your company's process would result in the vehicle no longer complying with Standard No. 212. Your company is obliged to determine that this grooving process will not result in a rendering inoperative violation with respect to Standard No. 212. As explained above, NHTSA will not express any views about your company's determination except in the context of an enforcement proceeding.

I hope this information is helpful. Please let me know if you have any further questions on this subject.

ID: nht88-3.78

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/28/88

FROM: THOMAS A COZ -- NORTH AMERICAN VAN LINES LAW DEPARTMENT

TO: JIM LUTES -- KENTUCKY TRAILER

TITLE: CALIFORNIA CITATIONS-HIGH MOUNTED TRAILER STOP LAMPS

ATTACHMT: ATTACHED TO LETTER DATED 06/19/88 FROM STEPHEN P. WOOD -- NHTSA TO JAMES A. LUTES; REDBOOK A33 [4]; VSA 102; STANDARD 108; LETTER DATED 11/09/88 FROM JAMES A. LUTES TO ERIKA Z. JONES -- NHTSA

TEXT: Dear Jim:

I understand you spoke by telephone on Friday, October 28, 1988, with Jack Sawrey, Vice President of NAVL's Fleet Service Division, concerning traffic citations which NAVL owner-operators have received in the state of California for pulling NAVL trail ers with high mounted lamps. Copies of four tickets are enclosed.

Based upon my conversation with Jack, I understand that you plan to contact the U.S. Department of Transportation and obtain written correspondence from DOT to the State of California regarding this issue. Specifically, I hope DOT is willing to write a letter which says that high mounted trailer stop lamps/turn signals are legal under federal laws and regulations. A question has been raised by California, for example, concerning the legality of such high mounted lamps under the terms of Federal Mot or Vehicle Safety Standard 108.

Thank you in advance for your assistance in soliciting such a letter from DOT. If possible, please send a copy of whatever letter is finally generated to both Jack Sawrey and to me at our NAVL address listed above.

Sincerely,

Enclosures [4 CALIFORNIA HIGHWAY PATROL TRAFFIC TICKETS OMITTED]

ID: nht88-3.79

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/31/88

FROM: ERIKA Z. JONES -- NHTSA

TO: HIROSHI KATO -- MMC SERVICES INC.

TITLE: NONE

ATTACHMT: LETTER DATED 04/19/88 FROM HIROSHI KATO TO ERIKA Z JONES; OCC - 1916

TEXT: Dear Mr. Kato:

This is in response to your letter of April 19, 1988, concerning whether a Mitsubishi Motors Corporation SH27 lightweight industrial truck that you intend to offer for sale in the United States should be classified as a motor vehicle under Section 102(3) of the National Traffic and Motor Vehicle Safety Act ("Safety Act"). You stated that this vehicle is intended for "general or carrier work for off-road applications," and that it is capable of a maximum speed of approximately 25 mph. You further expla ined that your company planned to advertise, promote, and market this vehicle as an off-road vehicle. Based on the information provided in your letter, it appears that the SH27 would not be a motor vehicle under the Safety Act.

Section 102(3) of the Safety Act (15 U.S.C. 1391(3)) defines a "motor vehicle" as

any vehicle driven or drawn by mechanical power manufactured primarily for use on the public streets, roads, and highways, except any vehicle operated exclusively on a rail or rails.

NHTSA has interpreted this language as follows. Vehicles that are equipped with tracks or are otherwise incapable of highway travel are plainly not motor vehicles. Further, vehicles designed and sold solely for off-road use (e.g., airport runway vehicl es and underground mining devices) are not considered motor vehicles, even though they may be operationally capable of highway travel. Vehicles that have an abnormal body configuration that readily distinguishes them from other highway vehicles and a max imum speed of 20 miles per hour (mph) are not considered motor vehicles, because their use of the public roads is intermittent and incidental to their primary intended off-road use.

On the other hand, vehicles that use the public highways on a necessary and recurring basis are motor vehicles. For instance, a utility vehicle like the Jeep is plainly a motor vehicle, even though it is equipped with

special features to permit off-road operation. If a vehicle's greatest use will be off-road, but it will spend a substantial amount of time on-road, then NHTSA has interpreted the vehicle to be a "motor vehicle". Further, the agency has determined that a vehicle such as a dune buggy is a motor vehicle if it is readily usable on the public roads and is in fact used on the public roads by a substantial number of owners, regardless of the manufacturer's stated intent regarding the terrain on which th e vehicle is to be operated.

Your vehicle is not easily classified under either of these groupings. On the one hand, your vehicle has a body configuration nearly identical to standard trucks, can be registered for use on the highways of several foreign countries, and can obtain a a maximum speed of approximately 25 mph. These factors suggest that the vehicle should be classified as a motor vehicle. On the other hand, you stated that this vehicle is intended to be used only for off-road applications and that this vehicle will be advertised and promoted for off-road purposes only and will contain four warning labels stating "Warning: Off Road Use Only." These factors suggest that the vehicle should not be classified as a motor vehicle.

In instances where the agency is asked whether a vehicle is a motor vehicle when it has both off-road and on-road operating capabilities, and about which there is little or no evidence about the extent of the vehicle's on-road use, the agency has applied five factors in offering its advice. These factors are:

1. Whether States or foreign countries have permitted or are likely to permit the vehicle to be registered for on-road use.

You noted that several foreign countries including Japan and Taiwan register for on-road use the general export configuration of this vehicle. This suggests that your vehicle should be considered a motor vehicle. You attempted to distinguish this fa ct by stating that the vehicle to be sold in the United States has different specifications than the general export vehicles. The differences are that the United States version has a maximum speed of 25 mph while the general export version can achieve s peeds of greater than 55 mph, the engine displacement in the United States version has an engine of 548 cc rather than the 796 and 783 cc for the general export version, and the United States version has an hourmeter (similar to agriculture vehicles) rat her than a speedometer. You stated that these differences mean that there is little basis for assuming that the experience in other countries would correlate to the likelihood of States permitting the vehicle to be registered for highway use in the Unit ed States. Since the vehicle closely resembles a small truck for highway use, we believe it is likely that States would permit it to be registered for highway use, just as other countries have. Therefore, this factor suggests that your vehicle should b e considered a motor vehicle.

2. Whether the vehicle is or will be advertised for use on-road as well as off-road, or whether it is or will be advertised exclusively for off-road use.

You stated that your advertising and promotional materials will state that your vehicle should be used only for off-road purposes and will not depict or suggest that the vehicle can be used on-road. This factor suggests that the vehicle should not be considered a motor vehicle.

3. Whether the vehicle's manufacturer or dealers will assist vehicle purchasers in obtaining certificates of origin or title documents to register the vehicle for on-road use.

You stated that your dealers will be instructed that this vehicle is to be used solely for off-road purposes and that no assistance should be given to obtain a title for the vehicle or to register the vehicle in this country. Your company also will s tate on any ownership document that this vehicle is not intended for on-road use. Therefore, this factor would indicate that the vehicle should not be considered a motor vehicle.

4. Whether the vehicle is or will be sold by dealers also selling vehicles that are classified as motor vehicles.

You stated that this vehicle will only be sold by dealerships that sell vehicles other than motor vehicles, such as material handling equipment like lifts and agricultural equipment. This factor suggests that the vehicle should not be considered a mo tor vehicle.

5. Whether the vehicle has or will have affixed to it a warning label stating that the vehicle is not intended for use on the public roads.

You stated that four warning labels will be affixed to the interior and exterior of the vehicle body. Labels stating "Off Road Use Only" will be applied to the exterior front panel of the cab, the rear gate, and the instrument panel. Additionally, a label stating "Warning: Off Road Use Only" will be affixed to the exterior rear panel of the cab. This factor would indicate that the vehicle is not a motor vehicle.

Based on the representations in your letter, the agency believes that the Mitsubishi SH27 lightweight truck does not appear to be a motor vehicle under the Safety Act. However, we will reexamine this conclusion if we learn that, for example, the vehicle is in fact used on the public roads by a substantial number of its owners.

I hope this information is helpful.

ID: nht88-3.8

Open

TYPE: INTERPRETATION-NHTSA

DATE: 08/19/88

FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA

TO: PAUL SCULLY -- VICE PRESIDENT PETERSON MANUFACTURING CO.

TITLE: NONE

ATTACHMT: LETTER DATED 04/22/88 TO ERIKA Z JONES, FROM PAUL SCULLY RE INTERPRETATION OF EFFECTIVE PROJECTED LUMINOUS AREA, OCC - 1946

TEXT: Dear Mr. Scully:

This is in reply to your letter of April 22, 1988, asking for a clarification of a letter that this Office sent Wesbar Corporation on March 16, 1988, with respect to the term "effective projected luminous area."

Wesbar had asked whether it could include the "illuminated (by the turn signal bulb) reflex reflector portion of the turn signal lens" (Wesbar's language) in its calculation of the 12 square inch minimum effective projected luminous area required by S4.1 .17 of Safety Standard No. 108. We replied that it could, assuming that the light shines through the reflector. You have pointed out that although a small amount of light escapes through a reflex reflector, the reflector is designed to return light fro m an outside source, rather than to direct light from a source inside the lamp, and that heretofore agency interpretations (e.g. on October 28, 1970, and October 28, 1979) had expressly excluded reflex reflectors from areas included in the calculation of effective projected luminous area. Reflex reflectors are also excluded from the term by SAE J387 Terminology.

We appreciate your calling this matter to our attention. Previous interpretations by this Office clearly indicate that a "reflex reflector" is not to be included in the calculation of effective projected luminous area. We also note that the SAE definit ion (paragraph 2, SAE J594f,

January 1977) is incorporated by reference into Standard No. 108, stating that this item of equipment is one that provides an indication of vehicle presence by reflected light (rather than projected light). We are providing a copy of this letter to Wesbar so that it will be apprised of our reevaluation, and our conclusion that the reflex reflector portion of a lens cannot be included in the calculations of the projected luminous lens area.

I hope this clarifies the matter for you.

Sincerely,

ID: nht88-3.80

Open

TYPE: INTERPRETATION-NHTSA

DATE: 11/01/88 EST

FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA

TO: CLARENCE M. DITLOW -- EXEC. DIRECTOR, CENTER FOR AUTO SAFETY

TITLE: NONE

ATTACHMT: LETTER DATED 9-9-88 TO ERIKA JONES, NHTSA, FROM CLARENCE M. DITLOW, EXEC. DIR., CENTER FOR AUTO SAFETY, OCC-2525; LETTER DATED 8-02-88 TO CENTER FOR AUTO SAFETY FROM JOANNE P. DELL'AQUILA

TEXT: This responds to your letter asking us to "investigate" a service bulletin issued by General Motors to its dealers regarding rear seat lap/shoulder belt kits to be retrofitted in models from earlier model years. You objected to General Motors' decision not to provide retrofit kits for all models, because all earlier models have shoulder belt anchorages and because you question the statement in General Motors' service bulletin that rear seat lap/shoulder belts in certain models would not offer better pr otection for rear seat occupants than lap belts alone. You concluded by alleging that General Motors' "refusal to provide shoulder belt kits for selected models is effectively frustrating" the purpose of requiring anchorages for rear seat shoulder belts to be installed in cars made since 1972 and our policy of encouraging manufacturers to provide retrofit kits for rear seat lap/shoulder belts in older vehicles.

I disagree with your allegations. Let me begin by emphasizing that we continue to support the use of rear seat lap belts, the restraint system found in most cars on the road today. While rear seat lap/shoulder belts may be even more effective, numerous studies have confirmed that rear seat lap belts are effective in reducing the risk of death or serious injuries to occupants. Therefore, NHTSA continues to urge all motorists to use the available safety belt systems in their vehicles.

However, we are encouraging vehicle manufacturers to make rear seat lap/shoulder belt retrofit kits available for those consumers who desire them, such as Ms. Dell'Aquila. General Motors has indicated to us that such a retrofit kit is available for Ms. Dell'Aquila's 1988 Buick Regal. However, General Motors' bulletin to its dealers appears to indicate that retrofit kits are not available for those cars. To clear up any confusion, we have forwarded a copy of Ms. Dell'Aquila's letter to General Motors for their response.

2

The allegations in your letter, however, go far beyond Ms. Dell'Aquila's situation to suggest erroneously that her experience shows some failure of our efforts to ensure that rear seat lap/shoulder belt retrofit kits are widely available. As you were to ld in Administrator Steed's April 28, 1987 letter to you on this subject, NHTSA does not have the statutory authority to require all manufacturers to make rear seat lap/shoulder belt retrofit kits available for all older models. Absent such authority, t he agency has sought the voluntary cooperation of the manufacturers to make retrofit kits available for those customers who desire them. The vehicle manufacturers' voluntary positive response to our encouragement is demonstrated by the current availabil ity of retrofit kits for a wide variety of model lines. In fact, the General Motors Information Bulletin enclosed with your letter shows that company has retrofit kits now available for more than 50 models of its cars, trucks, and vans.

The fact that retrofit 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. If a manufacturer makes a good faith determination that it is not ap propriate to make retrofit kits available for certain of its past models, that determination presumably reflects a thoughtful consideration of the characteristics of those individual models. We have no reason to question General Motors' determination wi th respect to a few of its past models.

ID: nht88-3.81

Open

TYPE: INTERPRETATION-NHTSA

DATE: 11/01/88 EST

FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA

TO: DAVE ANDERSON -- SALES MANAGER, GIST ORNAMENTAL IRON WORKS

ATTACHMT: NOT INCLUDED

TEXT: This responds to your letter about Federal requirements for trailers. According to your letter, you are in the planning stages of becoming a manufacturer of, and dealer for, automobile trailers. The trailers would hitch to the back of automobiles and b e designed to carry cargo. You noted that in response to an earlier inquiry, you received a copy of the handout entitled "Information For New Manufacturers of Motor Vehicles and Motor Vehicle Equipment." You stated that you are unclear just how this app lies to automobile trailers. You asked what you need to do to comply with any applicable Federal regulations, and what regulations apply to trailers of the kind you plan to build.

Trailers are considered motor vehicles under federal law. As a manufacturer of motor vehicles, you would be required to submit identification information to the National Highway Traffic Safety Administration (NHTSA) under 49 CFR Part 566, Manufacturer I dentification. You would also be required to certify that each trailer complies with all applicable Federal safety standards. The procedure is specified in 49 CFR Part 567.

The following safety standards apply to trailers: Safety Standard No. 108, Lamps, Reflective Devices, and Associated Equipment, Safety Standard No. 115, Vehicle Identification Number -- Basis Requirements, Safety Standard No. 119, New Pneumatic Tires for Vehicles Other Than Passenger Cars, Safety Standard No. 120, Tire Selection and Rims for Motor Vehicles Other Than Passenger Cars. The content requirements for the vehicle identification number are found at 49 CFR Part 565. In addition, trailers with certain braking systems must meet Safety Standard No. 106

Brake Hoses, Safety Standard No. 116, Motor Vehicle Brake Fluids, and Safety Standard No. 121, Air Brake Systems. All of these safety standards are found in 49 CFR Part 571.

I hope this information is helpful.

ENCLOSURE

ID: nht88-3.82

Open

TYPE: INTERPRETATION-NHTSA

DATE: 11/01/88

FROM: ERIKA Z. JONES

TO: GARY M. CEAZAN -- VICE PRESIDENT RIKEN-AMERICA, INC.

TITLE: NONE

ATTACHMT: LETTER DATED 02/16/88 FROM ERIKA Z JONES TO MIKE KAIZAKI; STANDARD 119; UNDATED LETTER FROM ERIKA Z JONES TO E.W. DAHL; LETTER DATED 04/18/88 FROM GARY M. CEAZAN TO US DEPARTMENT OF TRANSPORTATION; OCC-1951; STANDARD 109,119

TEXT: Dear Mr. Ceazan:

This is in response to your letter asking whether tires marked with both an ETRTO (European Tyre and Rim Technical Organization) size designation and a different ISO (International Standardization Organization) size designation and a different ISO (Inter national Standardization Organization) size designation can legally be imported into the United States. As discussed below, such tires cannot be imported into the United States, because they do not comply with the applicable safety standards. I regret the delay in this response.

All new pneumatic tires imported into the United States for use on passenger cars must be certified as complying with Federal Motor Vehicle Safety Standard No. 109, New Pneumatic Tires - Passenger Cars (49 CFR @ 571.109), and all new pneumatic tires impo rted for use on motor vehicles other than passenger vehicles must be certified as complying with Standard No. 119, New Pneumatic Tires for Vehicles Other Than Passenger Cars (49 CFR @ 571.119). Both of these standards prohibit "dual-size markings," or l abeling two different size designations on one tire.

In the case of passenger car tires, section S4.3(a) of Standard No. 109 specifies that each tire shall be labeled with "one size designation, except that equivalent inch and metric size designations may be used." (emphasis added). This agency expressly prohibited dual-size markings on passenger car tires in a preamble amending Standard No. 109; 36 FR 1195, January 26, 1971. This prohibition was expressly repeated in subsequent amendments that addressed the question of tire labeling under Standard No. 1 09; see 39 FR 10162, March 18, 1974; and 42 FR 12869, March 7, 1977.

In the case of tires for use on vehicles other than passenger cars, there is no express prohibition in Standard No. 119 against dual size markings. However, section S6.5(c) of Standard No. 119 requires that each tire be marked on both sidewalls with "th e tire and size designation as listed in the documents and publications designated in S5.1." NHTSA has interpreted the use of the singular in the phrase "tire size designation," rather than the plural "tire size designations," to be a prohibition against marking more than one tire size designation on these

tires. See the enclosed copies of my January 7, 1988 letter to Mr. E.W. Dahl and my February 16, 1988 letter to Mr. Mike Kaizaki.

Since tires marked with two size designations would not comply with our tire standards, they could not legally be imported into the United States, according to the requirement specified in section 108(a)(1)(A) of the National Traffic and Motor Vehicle Sa fety Act (15 U.S.C. 1397(a)(1)(A)). If you have any further questions about our tire standards or need additional information on this subject, please feel free to contact Mr. Marvin Shaw of my staff at this address or by telephone at (202) 366-2992.

ENCLOSURES

ID: nht88-3.83

Open

TYPE: INTERPRETATION-NHTSA

DATE: 11/01/88

FROM: ERIKA Z. JONES -- NHTSA

TO: JOHN S. CROCKENBERG

TITLE: NONE

ATTACHMT: LETTER DATED 02/26/88 FROM JOHN S. CROCKENBERG TO ERIKA Z JONES; OCC-1696 NCC - 20

TEXT: Dear Mr. Crockenberg:

This is in response to your letter of February 26, 1988, concerning antiglare plexiglass shields. I regret the delay in our response. You asked whether Standard No. 103, Windshield Defrosting and Defogging Systems, Standard No. 111, Rearview Mirrors, o r any other Federal Motor Vehicle Safety Standard applies to your product, a 4" x 6" x 1/8" parallelogram with rounded corners made of transparent bronze plexiglass with an attached 1/2" diameter suction cup. You noted that this device, which adheres to the interior of automobile windows, deflects obstructive sunglare where conventional sun visors cannot be placed. You also asked what other agency's regulations you should be aware of before you begin to manufacture and market this device, if none of ou r standards apply.

You are correct in assuming that Standard No. 103 and Standard No. 111 do not apply to your product. The only Federal Motor Vehicle Safety Standard that is relevant to your product is Standard No. 205, Glazing Materials. S2 states that one purpose of t his standard is to "ensure a necessary degree of transparency in motor vehicle windows for driver visibility." S1 and S3 note that Standard No. 205 applies to glazing materials in both motor vehicles and motor vehicle equipment. I am enclosing an agency "fact sheet," which concerns the tinting of motor vehicles and motor vehicle equipment. I also am enclosing two previous NHTSA interpretation letters, which concern products similar to your antiglare shield. These letters to Susan House on December 20 , 1985 and to Jeffrey Richard on April 16, 1985 explain the effect of Standard No. 205 on a manufacturer of such a product.

In response to your second question, I have enclosed a copy of an information sheet for new manufacturers of motor vehicles and motor vehicle equipment. This identifies other agencies whose regulations might be applicable to a new manufacturer's product s.

I hope this information is helpful.

ENCLOSURES

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.