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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 7371 - 7380 of 16514
Interpretations Date
 search results table

ID: nht91-5.29

Open

DATE: August 20, 1991 EST

FROM: Jt Covelli -- President, Jt Covelli Marketing & Media

TO: Taylor Vinson -- Legal Counsel, NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 9-6-91 from Paul Jackson Rice to Jt Covelli (A38; Std. 108)

TEXT:

Recently a woman in the creative department of my advertising agency saw a decal placed on the third brake light of a car in Illinois. The decal's backround was clear and in black bold letters was the name of the auto dealer. The letters appear only when the brake light is on and are only visible from a short distance.

I have been advised by the Wisconsin D.O.T. that Wisconsin has no law governing the use of a decal on the third brake light. Is there a federal law allowing the use of a clear decal in this manner?

My agency has a client we would like to present the idea to. We respectfully request your legal opinion in this matter. Thank you in advance for your consideration. Please feel free to call me with questions at 608 274-9906. I look forward to hearing from you.

ID: nht91-5.3

Open

DATE: July 19, 1991

FROM: Charles Lombard -- Lombard Industries

TO: Rick Iderstiene -- NHTSA

TITLE: Safety Standard #211

ATTACHMT: Attached to letter dated 9-12-91 from Paul Jackson Rice to Charles Lombard (A38; Std. 211); Also attached to letter dated 11-13-87 from Erika Z. Jones to William J. Maloney

TEXT:

Please send me a letter of your approval to market my new wheel and/or hubcap design at your earliest convenience.

I have worked hard and am fighting cancer. I've put in nine years in the making of this product with safety always in mind. I have worked with General Motors and Ford Motor Company for 40 years in general management positions, always making everything to be safe and clean. I have 40 years with a perfect record. I've received many awards.

The design will be a little deeper and inwards. The TIRE will ALWAYS HIT THE CURB FIRST. It's one piece and has nothing to do with holding the wheel, or rather the design has nothing to do with holding the wheel on the car or truck. It just has a sparkle affect and will keep the wheel cooler, eliminating brake fade (a good safety factor).

As you can see, the wheel will still be held on by 4, 5 or 6 lug nuts. You can see we threw weeds, cloth and other debris directly into it, and the design will not catch it. It is DEFINITELY NOT a true knock-off with sharp ends. The pictures enclosed will show a better idea of how it is held on. It is definitely stronger and much more safe than anything that the auto factories are building today.

Enclosed are some pictures of many other makes and models. Much of mine will be molded and poured in appearance only (strong and safe). The lug nuts and the outer edge of the hub are safe and much more leaning toward the safety factor than many that are on the market today. I have many factory awards for marketing all types of vehicles.

We found by throwing cloths or debris into the wire wheels of today, they will catch more than any other design and will break the spokes. The knock-off hubs and prongs I know have been outlawed many years ago. My wheel and hubcaps were studied by the marketing professosr and students of the University of Arizona three years ago. Compared to some market studies, my design was much stronger and safe, and the wheel made of steel and chrome NEVER has to be retourqued like aluminum.

I hope I pass your specifications and endorsement. Thank you so much.

Attached to drawings of wheel rims and hub caps. (Graphics omitted)

ID: nht91-5.30

Open

DATE: August 23, 1991

FROM: Jon Nisper -- K.B. Lighting, Inc.

TO: Jerry Medelin -- NHTSA

TITLE: Telephone conversation 8/20/91

ATTACHMT: Attached to letter dated 10-7-91 from Paul Jackson Rice to Jon Nisper (A38; Std. 108)

TEXT:

In reference to our telephone conversation please refer to the attached sheet showing a proposed headlamp / turnsignal assembly.

In each case, where should the 100mm separation be measured for turn signal headlamp position? The reflector being considered is an advanced variable focus highbeam / lowbeam utilizing a 9007 bulb. In both cases the inboard wall serves no functional pupose. And in fact, the inboard wall could be blackened with no loss of performance.

Thank you for your opinion. If you feel that this situation warrants it, I will follow this telefax up with a formal letter for official judgement.

Attachment

Diagram of the proposed headlamp/turnsignal assembly. (Graphics omitted)

ID: nht91-5.31

Open

DATE: September 3, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Thomas R. Steinhagen -- Custom Accessories, Inc.

TITLE: None

ATTACHMT: Attached to letter dated 8-1-91 from Thomas R. Steinhagen to Dee Fujita (OCC 6298)

TEXT:

This responds to your August 1, 1991 letter to Ms. Fujita of my off asking whether Federal Motor Vehicle Safety Standard No. 107, Reflecting Surfaces, applies to a replacement windshield wiper arm and blade sold at retail, the end consumer.

As Ms. Fujita informed you in a July 31, 1991 telephone conversation, generally speaking, the answer is no. Standard 107 applies to new motor vehicles--passenger cars, multipurpose passenger vehicles, trucks and buses (paragraph S2 of Standard 107)--and not to items of motor vehicle equipment, such as replacement wiper arms and blades. Thus, replacement wiper arms and blades may be sold to consumers without violating Federal law, even if the component does not meet Standard 107.

However, S108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act prohibits any manufacturer, distributor, dealer or repair business from "rendering inoperative" any device or element of design installed in or on a vehicle in compliance with an applicable safety standard. This prohibition applies to both new and used vehicles. If a person in the aforementioned categories installed on a vehicle a wiper arm and blade that did not meet the specular gloss requirements of Standard 107, it would be rendering inoperative the compliance of the vehicle with Standard 107. Violations of S108 of the Safety Act are subject to a civil penalty of up to $1,000 per violation. The prohibition of S108(a)(2)(A) does not apply to individual vehicle owners who alter their own vehicles. Thus, individual owners may install any item of motor vehicle equipment regardless of its effect on compliance with Federal motor vehicle safety standards. However, NHTSA encourages vehicle owners not to tamper with vehicle safety equipment if the modification would degrade the safety of the vehicle.

In addition to the above, you should be aware that manufacturers of motor vehicle equipment are subject to the requirements in sections 151-159 of the Safety Act concerning the recall and remedy of products with defects relating to motor vehicle safety. If you or NHTSA determines that a safety-related defect exists, you must notify purchasers of your product and remedy the problem free of charge. Any manufacturer which fails to provide notification of or remedy for a defect are subject to a civil penalty of up to $1,000 per violation.

I hope this information is helpful. Please contact my office if you have further questions.

ID: nht91-5.32

Open

DATE: September 3, 1991

FROM: D. G. Kong -- General Manager, Certification Business Dept., KIA Motors Corp.

TO: Andrew J. Sklover -- Special Assistant to the Administrator, NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 10-7-91 from Paul Jackson Rice to D. G. Kong (A38; Std. 216, Part 567)

TEXT:

We are pleased to get to give our best regards to you this time since your visit to our company last year.

Since then, we are trying to do our best for developing our future models suitable for American market in accordance with the guidance of NHTSA.

For the lack of information on USA safety certification, we are in need of your help for the followings: (A) FMVSS 216 Roof Crush Resistance for Convertibles : According to S3(c) of FMVSS 216 Roof Crush Resistance, convertible vehicles are exempted from application for this rule, we understood. We'd like to know the clear & detailed definition of convertibles. Let's make an example for your reference. The soft roofline of ISUZU Amigo (Sports Utility Vehicle) is composed of half hard top with steel and half soft top with plastic or special cloth. Is it called by convertible in connection with application of FMVSS 216 requirements effective September 1, 1993? (Soft top can be detachable in use.)

(B) Submitting reports to NHTSA and state governments: In relation to USA Safety certification, there are lots of laws & regulations of federal/state goverments, we know. What regulations in addition to FMVSS do we should follow (expecially in state regulations) and what reporting (such as, Bumper-Indiana and VIN Reporting-NHTSA) do we have to submit when we proceed USA Safety Certifiction? We'd like know the relationship of laws and regulations between federal states.

We're wondering if you are in charge of these queries or not, but you are kindly requested to deliver the message to the man in charge.

We'll do endeavor to keep up with the line of NHTSA to improve the safety of motor vehicles and at last wish you and your family every happiness.

ID: nht91-5.33

Open

DATE: September 3, 1991

FROM: Satoshi Nishibori -- Vice President, Industry/Government Affairs, Nissan Research & Development, Inc.

TO: Paul Jackson Rice -- Chief Counsel, NHTSA

TITLE: RE: Request for Interpretation for 49 CFR Part 571.208, S4.2.5.6.1(b), S.4.2.5.6.2 and 49 CFR Part 585; Ref: W-491-H

ATTACHMT: Attached to letter dated 10-28-91 from Paul Jackson Rice to Satoshi Nishibori (A38; Std. 208; Part 585)

TEXT:

Nissan Research & Development, Inc., with specific authority from Nissan Motor Company, Ltd. of Tokyo, Japan ("Nissan"), formally requests interpretation regarding the provisions set forth in 49 CFR Part 571.208, S4.2.5.6, "Trucks, buses, and multipurpose passenger vehicles with a GVWR of 8,500 pounds or less and an unloaded vehicle weight of 5,500 pounds or less produced by more than one manufacturer" and 49 CFR Part 585, "Automatic Restraint Phase-in Reporting Requirements".

Nissan intends to produce a multipurpose passenger vehicle (MPV) in a joint program with another automobile manufacturer (hereafter referred to as "Company A") beginning in the 1992 calender year. Nissan is requesting that the NHTSA Office of Chief Counsel provide an interpretation regarding the applicability of the provisions set forth in 49 CFR Part 571.208, S4.2.5.6.1(b), S4.2.5.6.2, and 49 CFR Part 585.5(c)(3)(i) with regards to calculations of percentages of vehicles within its composite fleet for the purposes of complying with the passive restraint phase-in requirements set forth in FMVSS 208, as recently amended to include light duty trucks and MPV classified vehicles.

Company A will assemble the MPV in a domestic (U.S.) assembly plant. Nissan has undertaken the majority of design and development tasks and will supply the major powertrain components to Company A for the purposes of assembly. Nissan believes that this activity meets the substantive requirements such that Nissan may be considered a "manufacturer" of the vehicle. Nissan and Company A have mutually agreed upon the terms of a supplemental exhibit to the governing Design and Development contract that stipulates that Company A is the "manufacturer of the vehicle and will inscribe its name on the certification label." Additionally, the contract supplemental exhibit apportions among the two automakers the responsibility for defect investigations, safety noncompliances and statutory mandated submissions to the NHTSA.

Upon mutual consent by both manufacturers, company A will count Company A badged vehicles in its total fleet for the purposes of calculating passive restraint phase-in percentages, while Nissan will count Nissan badged vehicles in its composite fleet for the purposes of calculating passive restraint phase-in percentages. A separate document that acknowledges this agreement will be prepared and ratified by representatives of both Company A and Nissan.

Nissan is requesting that the NHTSA Office of Chief Counsel provide Nissan with an interpretation to the following issues:

1) Is Nissan considered a "Manufacturer", as defined in 49 CFR Part 571.208, S4.2.5.6, of the jointly produced MPV?

2) Can Nissan use the Nissan badged vehicles in its calculations in demonstrating compliance regarding the phase-in schedule for the passive restraint devices as amended for light trucks and MPV in FMVSS 208?

Please inform Nissan Research & Development, Inc. of your interpretation regarding these features at your earliest possible convenience. If you have any questions or require further information regarding this request for interpretation or related matters, please contact Mr. Toshio Horiuchi of my Washington, D.C. staff at (202) 466-5284.

ID: nht91-5.34

Open

DATE: September 4, 1991

FROM: Michael E. Kastner -- Director of Government Relations, National Truck Equipment Association

TO: Paul J. Rice -- Chief Counsel, NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 12-6-91 from Paul Jackson Rice to Michael E. Kastner (A38; Part 567; VSA 108(a)(2)(A))

TEXT:

I wanted to thank you for taking the time to meet with Mark Sidman and myself last Friday concerning FMUSS 204 and the difficulties faced by Multi-stage Manufacturers in certification. I also wanted to take this opportunity and pose a question to you or your staff.

The National Truck Equipment Association ("NTEA") has encountered a number of questions involving the need for an altered certification label under a particular set of circumstances. We would like NHTSA's interpretation of the following scenario.

An NTEA member receives a truck which is certified as a completed vehicle. This vehicle has not yet been titled or registered for use in any state. The NTEA member then installs a piece of equipment. This piece of equipment would not be considered readily attachable, nor would this equipment modify the completed vehicle's weight ratings. Both the completed truck manufacturer and the equipment manufacturer have stated that installation of this equipment would not affect compliance with any federal motor vehicle safety standards.

Under these circumstances, does the company installing the equipment on the completed vehicle need to affix an altered vehicle label?

Traditionally, the NTEA has advised its members that an altered vehicle label is required in this situation. If that is not the case we would like to advise our members accordingly.

Thank you in advance for your assistance with this matter.

ID: nht91-5.35

Open

DATE: September 6, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Jt Covelli -- President, Jt Covelli Marketing & Media

TITLE: None

ATTACHMT: Attached to letter undated from Jt Covelli to Taylor Vinson (OCC 6369)

TEXT:

This responds to your recent undated letter to Taylor Vinson of this Office with respect to whether Federal law allows the use of decals on center highmounted stop lamps. You report that Wisconsin has no law governing the use of a decal on the brake light.

THe subject is a complicated one under Federal law, but I shall try to explain it as simply as possible. There is no restriction under Federal law on the application of a decal to the center stop lamp, if the decal is placed there by the vehicle owner.

Center stop lamps were not required on passenger cars manufactured before September 1, 1985, and there are no Federal restrictions upon application of decals to lamps on pre-1986 model cars that may have been retrofitted with them. With respect to application of the decal on the center lamp of a passenger car manufactured on or after September 1, 1985, Federal law prohibits the application a decal by a manufacturer, distributor, dealer, or repair shop, either before or after its sale to the first owner, if the application of the decal creates a noncompliance with the Federal motor vehicle safety standard on lighting. Conversely, such application is permitted if the lamp remains in compliance with all applicable Federal requirements with the decal installed. For example, the Federal standard calls for a minimum "effective projected luminous area" of 4 1/2 square inches. Application of a decal to a lamp meeting the minimum area requirement would reduce the effective projected luminous area below 4 1/2 square inches, creating a noncompliance. On the other hand, if that area were large enough, and more than 4 1/2 square inches of it remained after the application of a decal, application of the decal would not create a noncompliance with the luminous area specification. The standard also calls for measurement of photometric performance at certain specified test points on the lamp. Obviously, the lamp must continue to provide the minimum photometric performance specified by the standard for those test points with the decal applied. Thus, whether application of a decal by a manufacturer, distributor, dealer, or repair shop creates a noncompliance is dependent upon the size of the lamp and the size, lettering, and transparency of the decal.

ID: nht91-5.36

Open

DATE: September 6, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Vel McCaslin -- Director, Grace After School

TITLE: None

ATTACHMT: Attached to letter dated 7-16-91 from Vel McCaslin to Mary Versailles

TEXT:

This responds to your letter of July 16, 1991, asking whether Grace After School is a "school" or "school-related event." This letter was in response to our letter of May 29, 1991, which concluded that the vans used to transport children to your program would be considered "school buses" only if your program is a "school or school-related event." You explained that your program is conducted from 3 p.m. to 6 p.m. daily, and operates under the auspices of Grace Presbyterian Church. The program picks up children from three area schools and brings them to the church. Once there, they are provided with snacks, have a period of about 1 hour for homework, and then go into activities like roller skating, art, music, and religion classes." No transportation home is provided. You also accept children from Grace School, a school which is connected with the church, but those children do not need transportation.

To determine whether a program like Grace After School is a "school," the agency looks at whether the function of the facility is primarily educational or custodial in nature. Based upon the description you have provided, it does not appear that Grace After school is a school.

To determine whether a program like Grace After School is a school-related event," the agency looks at the overall relationship between the program and the schools from which children are being transported to attend the program. Assuming that there is no significant relationship between Grace After School and the schools from which the children are being transported, it does not appear that Grace After School is a school-related event.

I hope you find this information helpful. If you have further questions, please contact Mary Versailles of my staff at this address or by telephone at (202) 366-2992.

ID: nht91-5.37

Open

DATE: September 6, 1991

FROM: Nikki G. Setzler --Setzler, Chewning & Scott, P.A.

TO: Ronald E. Ingle -- Chief, Safety Countermeasures Division, U.S. Department of Transportation, NHTSA

TITLE: NHTSA

ATTACHMT: Attached to letter dated 10-10-91 from Paul Jackson Rice to Nikki G. Setzler (A38; Part 571.3)

TEXT:

Our office represents a school district in South Carolina, which has two vans that it purchased used after 1977 and both vans are built to carry more than 11 passengers. These vans are used by the school district for various purposes, including the transportation of school children for school-related purposes, and/or activities. I have reviewed various documents and regulations with regards to the issue of whether or not the National Traffic and Motor Safety Vehicle Act of 1966 and/or the Highway Safety Act would preclude the district from using these two vans to transport school children when the vans were purchased used after 1977. I would appreciate it very much if you would advise me whether or not it is your interpretation that any provision of either Act or any regulation pursuant thereto would prevent the district from using these vans.

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.