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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 1561 - 1570 of 2066
Interpretations Date
 search results table

ID: nht78-1.6

Open

DATE: 12/15/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Bud Shuster - H.O.R.

TITLE: FMVSS INTERPRETATION

TEXT:

NOA-30

Honorable Bud Shuster House of Representatives Washington, D.C. 20515

Dear Mr. Shuster:

This responds to your inquiry dated November 29, 1978, on behalf of one of your constituents, Mr. C. Stake, requesting information about Federal safety standards concerning door locks on automobiles. Specifically, Mr. Stake is concerned that the doors on his 1977 Mercury Monarch can be unlocked by a child from the inside by lifting the door handle.

I am enclosing a copy of Safety Standard No. 206 (49 CFR 572.206), which specifies performance requirements for side door locks and side door retention components to minimize the likelihood of occupants being thrown from the vehicle as a result of impact. That standard specifies that each door on a passenger car shall be equipped with a locking mechanism with an operating means in the interior of the vehicle. Paragraph S4.1.3.1 of the standard specifies that when the locking mechanism on a side front door is engaged, the outside door handle or other outside latch release control shall be inoperative. For side rear doors, however, paragraph S4.1.3.2 requires both the outside and inside door handles to be inoperative when the locking mechanism is engaged.

This latter requirement was specifically included in the standard to address Mr. Stake's concern, that is, to prevent children from unlocking rear doors by means of the door handle. The design restriction was limited to rear doors on the basis that the danger arises primarily with unattended children sitting in the rear seat. A child sitting in the front seat is likely under the watchful eye of the driver. Further, there is the consideration that in emergency situations the driver may need to unlock his front door as easily and quickly as possible.

Since the Standard No. 206 requirements have been in effect for some time, we assume that the situation Mr. Stake describes is true only of the front doors of his Mercury Monarch. As noted above, however, there are competing safety considerations involved with door locks on front side doors.

Please contact our office if your constituent has any further questions concerning this matter, or have him contact us directly.

Sincerely,

Joseph J. Levin, Jr. Chief Counsel

Enclosure

DATE November 29, 1978

FROM: BUD SHUSTER, M. C.

Room 1112 Longworth Building Washington, D. C. 20515

TO: Department of Transportation Congressional Laison Office 400 Seventh Street, S.W.

Washington, D.C. 20590

NAME OF SUBJECT Mr. Clair Stake

SS OR OTHER CLAIM #

ADDRESS Box 115

Spring Run, Pennsylvania 17262

PROBLEM:

Mr. Stake has contacted me concerning car door lock safety standards. He owns a 1977 Mercury Monarch. When the door is locked (by pushing the button on the inside of the door) he finds that his young child can still open the door by pulling on the door handle.

This concernins him because be beleives that there should be safety standards which should require the door handle to be immobile until the lock button is pulled up.

Will you please send me any information on door lock standards? Thank you for your time and cooperation in this matter.

ID: nht81-1.15

Open

DATE: 02/19/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: J. L. Lubatti

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your letter of December 12, 1980, to the Office of Public Affairs and Consumer Participation. In your letter, you relate an incident involving a 1979 Plymouth Horizon. You state that this vehicle drifted down a steep grade and overturned after the driver parked and left the vehicle. The car's automatic transmission was apparently left in "Drive." You ask whether the design of this vehicle, which permits the driver to remove the keys from the ignition when the transmission is not in "Park," is legal. You also ask whether there is any litigation pending concerning this matter.

The National Highway Traffic Safety Administration (NHTSA) is empowered to issue safety standards regarding motor vehicles and motor vehicle equipment. Each regulation specifies minimum requirements that all vehicles and equipment to which the regulation applies must meet. The design of the Plymouth Horizon does not violate Federal safety standards. Safety Standard No. 102, Transmission shift lever sequence, starter interlock, and transmission braking effect, regulates starter interlocks on vehicle equipped with automatic transmissions. This rule requires that the engine starter be inoperative when the transmission shift lever is in a forward or reverse drive position. It does not require that the transmission be in "Park" before the keys can be removed from the ignition. Safety Standard No. 114, Theft Protection, requires all passenger cars to have a key-locking system. Standard No. 114 mandates that the key-locking system prevent (among other things) steering, forward movement of the vehicle under its own power, or both when the key is removed from the lock.

The key-locking system in the Horizon does not prevent forward self-mobility, as evidenced by the accident you describe in your letter. However, it does lock the steering column when the keys are removed from the ignition, and so it complies with the rule. The requirements of Standard No. 114 were designed to reduce the incidence of joyrider theft.

NHTSA is not currently investigating the Plymouth Horizon in regard to the issue you raise in your letter. The agency is unaware of any pending litigation.

We hope you find this information helpful. Please contact this office if you have any more questions.

SINCERELY,

December 12, 1980

N.H.T.S.A.

ATTENTION PUBLIC AFFAIRS AND CONSUMER PARTICIPATION

Re: 1979 Plymouth Horizon

Gentlemen:

In accordance with our insurance contract with the Sisters of Divine Providence and the Diocese of Pittsburgh, we recently paid a collision claim in excess of $ 2,900.00 and secured the proper form subrogating our company to their rights.

The vehicle's automatic transmission was apparently left in the "Drive" position by our insured after being parked on a relatively steep grade. She was able to remove the ignition key from the steering column and exit the vehicle before it drifted down the hill and overturned. (A copy of the police report is enclosed to verify the details). I'm advised that all 1979 and 1980 models of Horizon and Omni allow the operator to remove the keys regardless of whether the automatic floor type shifter is in the "Park" position.

Is this design legal and/or acceptable to your agency? If not, please also advise of any pending litigation concerning the matter.

Thank you in advance for your cooperation. x

John L. Lubatti Branch Manager

Police report omitted.

ID: nht81-1.18

Open

DATE: 02/19/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Proprietors Insurance Co.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your letter of December 12, 1980, to the Office of Public Affairs and Consumer Participation. In your letter, you relate an incident involving a 1979 Plymouth Horizon. You state that this vehicle drifted down a steep grade and overturned after the driver parked and left the vehicle. The car's automatic transmission was apparently left in "Drive." You ask whether the design of this vehicle, which permits the driver to remove the keys from the ignition when the transmission is not in "Park," is legal. You also ask whether there is any litigation pending concerning this matter.

The National Highway Traffic Safety Administration (NHTSA) is empowered to issue safety standards regarding motor vehicles and motor vehicle equipment. Each regulation specifies minimum requirements that all vehicles and equipment to which the regulation applies must meet. The design of the Plymouth Horizon does not violate Federal safety standards. Safety Standard No. 102, Transmission shift lever sequence, starter interlock, and transmission braking effect, regulates starter interlocks on vehicles equipped with automatic transmissions. This rule requires that the engine starter be inoperative when the transmission shift lever is in a forward or reverse drive position. It does not require that the transmission be in "Park" before the keys can be removed from the ignition. Safety Standard No. 114, Theft Protection, requires all passenger cars to have a key-locking system. Standard No. 114 mandates that the key-locking system prevent (among other things) steering, forward movement of the vehicle under its own power, or both when the key is removed from the lock.

The key-locking system in the Horizon does not prevent forward self-mobility, as evidenced by the accident you describe in your letter. However, it does lock the steering column when the keys are removed from the ignition, and so it complies with the rule. The requirements of Standard No. 114 were designed to reduce the incidence of joyrider theft.

NHTSA is not currently investigating the Plymouth Horizon in regard to the issue you raise in your letter. The agency is unaware of any pending litigation.

We hope you find this information helpful. Please contact this office if you have any more questions.

Sincerely,

ATTACH.

December 12, 1980

PUBLIC AFFAIRS AND CONSUMER PARTICIPATION -- N.H.T.S.A.

Re: 1979 Plymouth Horizon

Gentlemen:

In accordance with our insurance contract with the Sisters of Divine Providence and the Diocese of Pittsburgh, we recently paid a collision claim in excess of $ 2,900.00 and secured the proper form subrogating our company to their rights.

The vehicle's automatic transmission was apparently left in the "Drive" position by our insured after being parked on a relatively steep grade. She was able to remove the ignition key from the steering column and exit the vehicle before it drifted down the hill and overturned. (A copy of the police report is enclosed to verify the details). I'm advised that all 1979 and 1980 models of Horizon and Omni allow the operator to remove the keys regardless of whether the automatic floor type shifter is in the "Park" position.

Is this design legal and/or acceptable to your agency? If not, please also advise of any pending litigation concerning the matter.

Thank you in advance for your cooperation.

Sincerely,

John L. Lubatti -- Branch Manager, PROPRIETORS INSURANCE CO.

Enclosures omitted.

ID: Supreme_intl

Open

    Ms. Melissa A. Burt
    Foley & Lardner, LLP
    3000 K Street, NW, Suite 500
    Washington, DC 20007-5143

    Dear Ms. Burt:

    This responds to your letter on behalf of your client, Supreme International Limited (Supreme). Supreme manufactures a Truck Mount Feed Processor, which is a livestock feed mixer mounted on a truck. You ask if the product is a "motor vehicle" subject to regulation by this agency. As explained below, our answer is yes.

    You state that the Truck Mount Feed Processor is sold exclusively through farm equipment dealers and is not advertised for on-road use. You state that most of these vehicles never leave a farm after retail purchase, and that the vehicles travel on public roads on rare occasions for the purpose of transiting between farm locations or to obtain grain from a commodity barn. However, you also state that purchasers of these vehicles can obtain a certificate of title to permit registration and licensing under State motor vehicle laws.

    Chapter 301 of Title 49 of the U.S. Code ("the Safety Act") authorizes the National Highway Traffic Safety Administration (NHTSA) to establish Federal motor vehicle safety standards (FMVSSs) applicable to new motor vehicles. Section 30102(a)(6) of that chapter defines "motor vehicle" as:

    [A] vehicle driven or drawn by mechanical power and manufactured primarily for use on the public streets, roads, and highways, but does not include a vehicle operated only on a rail line.

    We have issued a number of letters addressing this language. We have stated that vehicles equipped with tracks, agricultural equipment, and other vehicles incapable of highway travel are not motor vehicles. We have also determined that certain vehicles designed and sold solely for off-road use (e.g. , airport runway vehicles and underground mining vehicles) are not motor vehicles, even if they may be operationally capable of

    highway travel. Also, vehicles are not motor vehicles if they were designed to be used primarily at off-road job sites and, although capable of being operated on public roads from one job site to another, their on-road use is only incidental to the primary purpose for which they were manufactured (e.g. , mobile cranes).

    We would consider the feed mixer to be a "motor vehicle" for the purposes of our FMVSSs and regulations. The Truck Mount Feed Processors on-road use would be more than incidental. An incomplete motor vehicle (i.e. , a chassis cab) is used in its manufacture and, as you state, Supreme completes the vehicle in accordance with the incomplete vehicle document supplied by the chassis-cab manufacturer and can certify the vehicle as complying with the FMVSSs. No part of the manufacturing process alters the chassis cab such that its final configuration is limited to off-road use. You state that the vehicles may travel on public roads when traveling between farm locations or to obtain grain from a commodity barn. You also state that purchasers of these vehicles can obtain a certificate of title to permit registration and licensing as motor vehicles under State laws. Given these factors, we conclude that the vehicles are motor vehicles for purposes of the Safety Act.

    If you have any additional questions, please contact Mr. Chris Calamita of my staff at (202) 366-2992.

    Sincerely,

    Jacqueline Glassman
    Chief Counsel

    ref:567
    d.1/12/05

2005

ID: nht92-4.47

Open

DATE: August 6, 1992

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Mary C. Andrews

TITLE: None

ATTACHMT: Attached to letter dated 6/17/92 from Mary C. Andrews to NHTSA Legal Counsel (OCC 7439)

TEXT:

This responds to your letter asking whether a plastic cone design you are developing would comply with the Department of Transportation's requirements applicable to warning devices. You explained that your device is a 24 inch high inflatable cone with reflector strips on the sides. The cone would be weighted down with sand in an enclosed bottom. Based on the information provided in your letter, it appears that your device would not comply with certain provisions of Federal Motor Vehicle Safety Standard No. 125, Warning Devices (49 CFR 571.125, copy enclosed).

By way of background information, the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq., the "Safety Act") gives this agency the authority to issue safety standards applicable to new motor vehicles and new items of motor vehicle equipment. We have exercised this authority to establish Standard No. 125. The Safety Act provides that no person shall "manufacture for sale, sell, offer for sale, or introduce or deliver for introduction in interstate commerce, or import into the United States" any new motor vehicle or new item of motor vehicle equipment unless the vehicle or item of equipment complies with the applicable standard. (See 15 U.S.C 1397(a)(1)(A).) NHTSA has no authority under the Safety Act to approve, certify, or otherwise endorse any commercial product. Instead, the Safety Act establishes a self-certification process under which each manufacturer is required to certify that each of its products meets all applicable Federal Motor Vehicle Safety Standard. (See 15 U.S.C. 1403.) I am enclosing a general information sheet explaining NHTSA's regulations.

Standard No. 125 applies to devices, without self-contained energy sources, that are designed to be carried in motor vehicles and used to warn approaching traffic of the presence of a stopped vehicle, except for devices designed to be permanently affixed to the vehicle. See section S3. Your planned product appears to be such a device and would therefore need to comply with all of the requirements of Standard No. 125. As the enclosed copy of the standard indicates, your device would have to comply with specific requirements including those for minimum size, durability, material, container, labeling, configuration, color, reflectivity, luminance, and stability. From the information provided in your letter, it appears that your device would not comply with several of these requirements.

Please be aware that violations of Safety Act provisions are punishable by civil fines of up to $1,000 for each violation of a safety standard. In addition the Act requires manufacturers to remedy their products if they fail

to comply with any applicable safety standards.

I hope this information is helpful. If you have any further questions about NHTSA's safety standard, please feel free to contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992.

Attachments

Copy of standard.

NHTSA information sheet titled Information for New Manufacturers of Motor Vehicles and Motor Vehicle Equipment.

NHTSA information sheet titled Where to Obtain NHTSA's Safety Standards and Regulations.

(Text of attachments omitted.)

ID: nht91-1.49

Open

DATE: February 22, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Samuel Yk Lau -- Kenwo Industries Ltd.

TITLE: None

ATTACHMT: Attached to letter dated 1-24-91 from Samuel Yk Lau to NHTSA (OCC 5657)

TEXT:

This is in reply to your letter of January 24, 1991, asking the agency for an opinion with respect to an "additional brake lamp" that you manufacture and intend to export to the United States. You ask "if there are any regulations, standards, or approval for this kind of product", and, further, "does this product need to have any certificate or approval before it can be sold or installed?"

Federal Motor Vehicle Safety Standard No. 108, Lamps, Reflective Devices, and Associated Equipment, has required the additional stop lamp on all passenger cars manufactured on and after September 1, 1985. The Standard specifies performance and minimum lens area requirements for the lamp, and these requirements must be met by any lamp that is used as original equipment on passenger cars, and by any lamp that is intended to replace a lamp originally installed on a car manufactured on and after September 1, 1985. If the lamp is intended as replacement equipment, its manufacturer must provide certification to the distributor or dealer of the lamp that the lamp meets Standard No. 108. For lighting equipment this certifica- tion may be in the form of a DOT symbol on the product, or a written statement on the packaging that the lamp meets all applicable Federal motor vehicle safety standards, or such other written certification as the lamp manufacturer may choose (e.g., an invoice). In addition, the lamp manufacturer must file an identification Statement with the agency, and a foreign manufacturer must designate an agent in the United States upon which the agency may serve legal process should that be required. However, there is no requirement that a manufacturer obtain approval from the agency before exporting its certified product to the United States and selling it here.

However, Standard No. 108 does not apply to an additional stop lamp that is intended for use in a passenger car manufactured before September 1, 1985, and there is no requirement that it be certified as meeting Standard No. 108. Under this circumstance, we advise that the packaging for any such lamp should clearly state that it is not intended to replace an original equipment center lamp so that legal questions regarding its conformity with Federal requirements do not arise. Even though the lamp is not subject to Standard No. 108, its foreign manufacturer must designate an agent in the United States, as mentioned in the previous paragraph.

An additional stop lamp for passenger cars manufactured before September 1, 1985, is also subject to the laws of the individual States in which the lamp is sold and used. We are unable to advise you on these laws, and suggest that you write for an opinion to the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard, Arlington, Va. 22203, USA.

We enclose a copy of Standard No. 108 and of the SAE standard on supplementary stop lamps that is incorporated by reference. We are also enclosing copies of the Manufacturer Identification and Designation of Agent regulations, and of other materials that our Office of Vehicle Safety Compliance provides in response to inquiries of this nature. Questions on these materials should be addressed to that Office.

ID: nht91-7.50

Open

DATE: December 20, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Deborah K. Nowak-Vanderhoef, Esq. -- General Motors Corporation, Legal Staff

TITLE: None

ATTACHMT: Attached to letter dated 12-2-91 from Deborah K. Nowak-Vanderhoef to Paul Jackson Rice (OCC 6728)

TEXT:

This responds to your request for an interpretation of Standard No. 209, Seat Belt Assemblies (49 CFR S571.209). Specifically, you asked if General Motors Corporation (GM) could include the term "dynamically-tested" in the label required by S4.6(b) of Standard No. 209. The answer is that GM may do so.

Prior to September 1, 1992, S4.6(b) of Standard No. 209 requires a dynamically tested manual belt to be labeled with the following statement: "This dynamically-tested seat belt assembly is for use only in (insert specific seating position(s), e.g., front right) in (insert specific vehicle make(s) and model(s)). However, a November 4, 1991 final rule, published at 56 FR 56323, amended S4.6(b) by deleting the term "dynamically-tested" from the required label, effective September 1, 1992. GM would like to continue to include the term "dynamically-tested" on its labels.

NHTSA has often addressed the issue of whether additional information may be provided along with information that is required to be labeled on the product in the context of our safety standards that apply to tires. NHTSA has consistently stated that additional information may be included on tires, provided that the additional information "does not obscure or confuse the meaning of the required information, or otherwise defeat its purpose." See, e.g., our May 31, 1988 letter to Mr. Garry Gallagher of Metzeler Motorcycle Tire. This is the same test we would apply in any of our safety standards for additional information that is provided along with required labeling information.

Applying this test to the situation at hand, the purpose of the labeling requirements in Standard No. 209 is to minimize the likelihood of improper installations of dynamically-tested manual belts, by specifying the particular vehicles and seating positions in which the belts are designed to be installed. GM's proposed labels would provide the information about the particular vehicles and seating positions in which the belts are designed to be installed on the label of these belts. The only difference between GM's proposed labels and the exact language specified in S4.6(b) of Standard No. 209 would be that GM's proposed labels would describe the belts as "dynamically-tested seat belt assemblies," instead of "seat belt assemblies." We do not see how this additional description of the belts, which is accurate and consistent with the agency's use of the term "dynamically-tested," would obscure or confuse the meaning of the required information or otherwise defeat its purpose.

Therefore, GM's proposed labeling would be permitted under the provisions

of S4.6(b) of Standard No. 209 that take effect September 1, 1992.

Enclosed with your letter was a petition for reconsideration that you asked be considered if the agency determined that the current language of S4.6(b) of Standard No. 209 prohibited the additional information to be provided on the GM labels. Since NHTSA has concluded that Standard No. 209 permits the additional information, we are disregarding that petition for reconsideration and will take no action on it.

ID: 2743y

Open

Mr. W. C. Glasscock
Sun-Cool & Co.
2201 North Fifth Street
Springfield, Illinois 62702

Dear Mr. Glasscock:

This responds to your letter concerning the installation of aftermarket tinting on motor vehicle windows. According to your letter, you have been involved in the window tinting business for many years but only recently became aware of the fact that Federal law prohibits businesses from adding tinting film to motor vehicle windows if it reduces the level of light transmittance below that required by the Federal standard. You expressed concern that there appears to be a conflict between Federal and state law in this area and that there has been a lack of enforcement of the Federal requirement.

We are pleased that you have become aware of the Federal requirement in this area and that you are apparently now complying with it. As you may have heard, we have brought suit against six tint businesses in Florida. Those cases are pending in Federal court. We also plan to take appropriate steps to enforce the Federal requirement in other parts of the nation.

I will now discuss the relationship between Federal and state law in this area. The National Highway Traffic Safety Administration ("NHTSA") is responsible for issuing Federal motor vehicle safety standards that establish requirements for specific levels of safety performance for new motor vehicles and motor vehicle equipment. Federal Motor Vehicle Safety Standard No. 205, Glazing Materials (49 CFR 571.205), which has been in effect since 1968, imposes a minimum level of light transmittance of 70 percent in all areas requisite for driving visibility (which includes all windows on passenger cars). The purpose of this requirement is to ensure adequate visibility through the windows, thereby reducing the risk of a motor vehicle crash.

Although Federal motor vehicle safety standards apply directly only to new vehicles and equipment, Federal law also imposes limits on the addition of tinting materials to motor vehicle glazing after vehicles have been purchased by consumers. Pursuant to section 108(a)(2) of the National Traffic and Motor Vehicle Safety Act, 15 U.S.C. 1397(a)(2), manufacturers, distributors, dealers, or motor vehicle repair businesses may not "render inoperative" any equipment or element of design installed in compliance with a Federal safety standard. Thus, those businesses may not install tinting that reduces the light transmittance of windows covered by Standard 205 to a level below the Federal requirement of 70 percent, since that would make the windows "inoperative" within the meaning of Standard 205.

You stated that state laws differ from the Federal law, citing as an example an Illinois law which, according to your letter, allows tinting on the rear and sides of vehicles as long as the vehicle's owner has a letter from a physician licensed to practice in the state of Illinois that explains the medical basis for the need.

The "render inoperative" provision of Federal law does not apply to actions by individual vehicle owners. Therefore, each State may regulate the extent to which after market tinting may be applied by vehicle owners to their own vehicles.

However, no state has the authority to grant any exemptions from the "render inoperative" prohibition of Federal law that applies to commercial entities. Hence, regardless of any provisions of state law, no manufacturer, distributor, dealer, or motor vehicle repair business may legally install window tinting film on a vehicle, unless the vehicle continues to comply with the Federal light transmittance requirements.

I hope this information is helpful.

Sincerely,

Paul Jackson Rice Chief Counsel

ref:205 d:ll/9/90

1970

ID: 2905yy

Open

Ms. Jessie M. Flautt
4405 Lafayette Street
Bellaire, TX 77401

Dear Ms. Flautt

This responds to your letter to Mr. Steve Kratzke of my staff, requesting that the National Highway Traffic Safety Administration (NHTSA) grant permission to a repair business to modify your motor vehicle.

You explained that you are under five feet, two inches and legally blind in one eye. You further explained that, due to the increased size of headrests in recent years, you are unable to locate a 1991 automobile which does not have headrests which impede your field of vision. You wish to arrange to have the size of the headrests in a 1991 automobile reduced. You asked if you could obtain permission from this agency to permit this modification. I hope the following discussion explaining our regulation will be of assistance to you.

I would like to begin by clarifying that there is no procedure by which persons petition for and are granted permission from NHTSA to arrange to have a motor vehicle repair business modify their motor vehicle. Repair businesses are permitted to modify vehicles without obtaining permission from NHTSA to do so, but are subject to certain regulatory limits on the type of modifications they may make. In certain limited situations, we have exercised our discretion in enforcing our regulations to provide some allowances to a repair business which cannot conform to our regulations when making modifications to accommodate the special needs of persons with disabilities. Since your situation is among those given special consideration by NHTSA, this letter should provide you with the relief you seek.

Our agency is authorized to issue Federal Motor Vehicle Safety Standards (FMVSS) that set performance requirements for new motor vehicles and items of motor vehicle equipment. Manufacturers are required by the National Traffic and Motor Vehicle Safety Act (Safety Act) to certify that their products conform to our safety standards before they can be offered for sale. Manufacturers, distributors, dealers and repair businesses modifying certified vehicles are affected by 108(a)(2)(A) of the Safety Act. It prohibits those businesses from knowingly rendering inoperative any elements of design installed on a vehicle in compliance with a FMVSS. In general, 108(a)(2)(A) would require repair businesses which modify motor vehicles to ensure that they do not remove, disconnect or degrade the performance of safety equipment installed in compliance with an applicable safety standard. Violations of 108(a)(2)(A) are punishable by civil fines up to $1,000 per violation.

In situations such as yours where a vehicle must be modified to accommodate the needs of a particular disability, we have been willing to consider any violation of 108(a)(2)(A) a purely technical one justified by public need. I can assure you that NHTSA would not institute enforcement proceedings against a repair business that modifies the headrest on your vehicle to accommodate your condition. We caution, however, that only necessary modifications should be made to the headrest to accommodate your condition and we urge your dealer to modify your vehicle in such a manner that would not degrade from the safety currently provided by your vehicle. Many manufacturers are currently installing headrests in vehicles which exceed the minimum dimensions required by FMVSS No. 202, Head Restraints. I urge you not to have your headrest reduced below these dimensions if it is not necessary for your field of view.

If you have further questions or need some additional information in this area, please contact Mary Versailles of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Paul Jackson Rice Chief Counsel

/ref:VSA, 202 d:3/26/9l

2009

ID: 77-2.27

Open

TYPE: INTERPRETATION-NHTSA

DATE: 05/03/77

FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA

TO: Messrs. Allen & Korkowski & Associates

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of March 3, 1977, to Mr. Oates of this office asking whether your client, a manufacturer of motorcycle accessories, is subject to requirements imposed by 49 CFR Parts 573, 576, and 577 and 15 U.S.C. 1402.

For your reference I am enclosing a copy of a new Part 577 which becomes effective June 28, 1977, that implements Part B of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1411 et seq.) effective December 27, 1974. These new sections have superseded Section 1402, to which you referred. Since you apparently are unaware of these changes I am also enclosing a copy of the amended Act.

Because your client manufactures motor vehicle equipment other than original equipment (i.e. accessories) its products appear to be "replacement equipment" as defined by 15 U.S.C. 1419(2)(B). Since Parts 573 and 576 apply only to motor vehicle manufacturers and not to equipment manufacturers you are correct in your conclusion that these regulations are inapplicable to your client. We have proposed, however, that Part 573 be amended to apply to manufacturers of replacement equipment although no action has yet been taken on the proposal. I include a copy of that proposal.

You also asked about the applicability of Section 577.4 which you found to be "silent about the duty of manufacturers of motor vehicle equipment". The Part 577 that you referenced reflects the statutory scheme that was in effect until December 27, 1974, under which a manufacturer of motor vehicle equipment (as contrasted with a vehicle manufacturer who also produced equipment) was not required to notify purchasers of safety-related defects or noncompliances which it, the manufacturer, had discovered. The equipment manufacturer's obligation to notify arose only upon determination of the existence of a safety-related defect or noncompliance by the NHTSA Administrator and in that event Section 577.5 requires the equipment manufacturer to follow the provisions of Section 577.4. The new statutory scheme of 15 U.S.C. 1411 et seq., as reflected in revised Section 577.5, now extends the notification and remedy obligation to safety-related defects and noncompliances discovered by manufacturers of replacement equipment.

Finally, you have asked if there is no duty to retain records how can an equipment manufacturer "observe the requirements of Part 577.4." I assume what you mean is how can it notify "the first purchaser (where known) . . . and any subsequent purchaser to whom a warranty on such . . . item of equipment has been transferred". The actual obligation of a manufacturer of replacement equipment today, however, is that established by 15 U.S.C. 1413(c)(3)(A), in effect since December 27, 1974, and it is to notify "the most recent purchaser known to the manufacturer" (See also new Section 577.7(a)(2)(ii)(A). Congress appears to have recognized that manufacturers of small and less expensive items of motor vehicle equipment generally may not keep records of ultimate purchasers when it authorized our agency to issue a public notice when the public interest requires it (15 U.S.C. 1413(c)(3)(B)). Since there is no obligation for a manufacturer to know the names of its purchasers, NHTSA will accept in good faith an equipment manufacturer's statement as to the extent of its knowledge of its most recent purchasers. Under proposed Section 573.7(c) your client, as a manufacturer of motor vehicle equipment, would be required to maintain certain records including a list of the names and addresses of the "most recent purchasers known to the manufacturer". Such a list would probably at a minimum comprise distributors of the product, might also include the dealers of the distributors, and possibly in some instances the ultimate purchaser. But it is not a requirement that steps be taken to know and list the names and addresses of all ultimate purchasers. If you have further questions after reviewing this letter and its enclosures I will be happy to answer them for you.

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.