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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 8131 - 8140 of 16514
Interpretations Date
 search results table

ID: 19766-1.pja

Open

Mr. Brian Goodman
V.P. Marketing/OEM Relations
Katzkin Leather Interiors, Inc.
4110 Hinsdale Rd.
S. Euclid, OH 44121

Dear Mr. Goodman:

This responds to your letter concerning whether the "leather interiors" that your company manufactures for vehicle seating systems are "readily attachable components" as that term is used in our certification regulation (49 CFR Part 567). As explained below, our answer is no.

You state that your product replaces "the existing factory cloth interior of an automobile." In a June 8, 1999 telephone conversation with Paul Atelsek, formerly of my staff, you explained that your products are generally installed in the vehicle prior to its first retail sale but could be installed afterward. You also stated that the interiors are installed on existing seat frames in three to five hours using "hog rings," hog ring pliers, and glue, and that some expertise is required. You said that installation is done almost exclusively by professional installers, and that your products are "used and distributed by over 1,500 restylers and dealers nationwide."

This letter explains your responsibilities in meeting the statutes and regulations administered by the National Highway Traffic Safety Administration (NHTSA). You have also asked about your responsibilities and those of your restylers under private tort liability. Questions relating to private tort liability are determined by State law. You should therefore consult with your attorney or insurance company for answers to your questions about that matter.

By way of background information, NHTSA is authorized by 49 U.S.C. 30101 et seq. ("the Safety Act") to issue Federal motor vehicle safety standards that set performance requirements for new motor vehicles and new items of motor vehicle equipment. NHTSA does not approve or certify any vehicles or items of equipment. Instead, each manufacturer is responsible for "self-certifying" that its products meet all applicable safety standards.

Your product installed as part of a new vehicle

A vehicle manufacturer installing your product on a new vehicle prior to the vehicle's sale would have to certify that the vehicle, with your interior, complies with all applicable standards. There are a number of standards that could be affected by the installation of your interiors. NHTSA issued Federal Motor Vehicle Safety Standard No. 302, "Flammability of interior materials," which sets flammability resistance requirements for cushions and seat backs and other components of new motor vehicles. Any person manufacturing a new vehicle with your leather interior must ensure that the seat covers, and the other components subject to Standard No. 302, possess the burn resistance characteristics required by the standard. The new vehicle's seats must also be able to meet the performance requirements of Standard No. 207, "Seating systems," with your product installed. The vehicle manufacturer may have incorporated sensors and other features in the seating system that affect the performance of the vehicle in meeting air bag deployment and other requirements of Standard No. 208, "Occupant crash protection." Further, Standard No. 201, "Occupant protection in interior impact," requires, among other things, that seat backs have a certain amount of cushioning to provide protection when struck by the head of rear seat passengers during a crash. Manufacturers must ensure that installation of your product on the back of front seats achieves the requisite amount of cushioning needed to meet the standard. In addition, Standard No. 201 requires cushioning in other parts of the vehicle, such as the header and A-pillar areas.

New vehicles may be altered by dealers and restylers prior to their sale after they have been certified by their manufacturer. Our regulations cover two types of vehicle alterations. The first is, as your question notes, an alteration of a completed vehicle by the addition, substitution, or removal of readily attachable components such as mirrors or tire and rim assemblies, or minor finishing operations such as painting, which do not alter the vehicle's stated weight rating (49 CFR 567.6). This type of alteration does not involve any additional certification responsibilities by the alterer.

The second type of alteration is an alteration of a certified vehicle by means other than the addition, substitution, or removal of readily attachable components or minor finishing operations, or an alteration in such a manner that the vehicle's stated weight ratings are no longer valid (49 CFR 567.7). A person or firm making this type of alteration, if done prior to the first purchase of the vehicle for purposes other than resale, must add a label stating that the vehicle as altered conforms to all applicable Federal motor vehicle safety standards and containing the name of the alterer (49 CFR 567.7).

In general, whether modifications involve "readily attachable components" depends on the difficulty in attaching those components. The agency has considered such factors as the intricacy of installation and the need for special expertise. We have previously stated that the addition of sub-flooring, padding, and carpeting to the floor of the vehicle may or may not involve the addition of "readily attachable components," depending on the amount of changes that were made to the vehicle itself.

Because your interiors require several hours to install by professional installers and require specialized tools for their installation, we would not consider your interior to be readily attachable or a minor finishing operation. Therefore, a company installing your interior prior to first sale would have to certify that the vehicle continues to comply with applicable safety standards.

Your product installed as aftermarket equipment

There is no safety standard that directly applies to your product if your product were sold for installation in used vehicles (as contrasted with installation on new vehicles before delivery of the vehicle to the first purchaser.) As discussed above, several of our safety standards that apply to a vehicle's seating system, and which may be affected by your product's installation, apply to new completed vehicles, not to aftermarket components. Nonetheless, businesses that modify the vehicle are limited in their modifications by 49 U.S.C. 30122. That section of our statute prohibits a motor vehicle manufacturer, dealer, distributor, or repair business from installing any modification that "make[s] inoperative any part of a device or element of design installed on or in a motor vehicle in compliance with an applicable motor vehicle safety standard . . . ." Any person in the aforementioned categories that installs your interior in a motor vehicle and that makes inoperative the compliance of a device or element of design on the vehicle would be violating 30122. Persons violating this section are subject to fines of up to $1,100 per violation.

We also note that the Safety Act requires manufacturers of motor vehicles and motor vehicle replacement equipment to ensure that their products are free of safety-related defects. Accordingly, you and any manufacturer installing your product in a new vehicle must ensure that the product is defect-free. If it were determined that the interiors had a safety-related defect, all purchasers would have to be notified and the defective item repaired or replaced without charge.

Individual States have the authority to regulate modifications that individual vehicle owners may make to their vehicles. You might wish to consult State regulations to see whether installation of your interiors would be permitted under State law.

I hope you find this information helpful.

Sincerely,
Frank Seales, Jr.
Chief Counsel
ref:VSA#201#302
d.9/29/99

1999

ID: 19771.drn

Open

The Honorable William E. Barrett
U.S. House of Representatives
Washington, DC 20515

Dear Congressman Barrett:

Thank you for your letter forwarding correspondence from Ms. Gina Dunning, former Director of the Nebraska Department of Health and Human Services, Regulation and Licensure. Your letter was forwarded to my office for reply, because the National Highway Traffic Safety Administration (NHTSA) administers the Federal school bus safety program.

Ms. Dunning wrote to you with concerns about a NHTSA regulation affecting child care centers and Head Start programs. In essence, Ms. Dunning was concerned that we have interpreted our statute to disallow dealers' sales of certain new buses to after school care programs that will significantly use the bus to transport school children "to or from school or an event related to school." The buses are those that are not certified as meeting NHTSA's school bus standards.

Ms. Dunning has written a separate letter to me, expressing her concern about our interpretation and how it would affect child care transportation providers in Nebraska. Her letter to me is substantially similar to the letter she addressed to you. While we understand that Ms. Dunning is no longer the Director of the state agency, we responded to her successor, Mr. Richard Nelson, on March 25, 1999. I am enclosing a copy of my response for your information, with all referenced enclosures.

I hope that the enclosed items are helpful. If you have any further questions, please feel free to contact me.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosures
ref:VSA#571.3

ID: 1977y

Open

Mr. George A. Van Straten
President
Van Straten Heated Tail Light Co. Inc.
Route l, Box 224
Baraga, MI 49908

Dear Mr. Van Straten:

This is in reply to your letter of July 12, l989, to this Office, requesting a copy of any agency correspondence with Thomas Gravengood, as well as an interpretation of Federal requirements as they apply to heated motor vehicle lamps produced by your company. Your company manufactures "heated lights" which are intended to melt snow that accumulates on them in the winter months. In Mr. Gravengood's letter of April 3, l989, to us he stated:

"All lights, lenses, and materials to assemble the heated safety lights have already been certified and passed the Motor Vehicle Safety Standard No. l08. We have been advised by the National Highway Traffic Safety Administration that there is no motor vehicle safety standard no. for heated lights. In order for us to do business at the O.E.M. level we require a letter of approval from you to us that we may pass on to our customers so they may start ordering and we may start producing."

We have no authority to "approve" or "disapprove" items of motor vehicle equipment. Under the National Traffic and Motor Vehicle Safety Act, an equipment manufacturer "approves" each of its own products that are subject to a Federal motor vehicle safety standard by certifying that it meets all applicable Federal motor vehicle safety standards, or (if it is a vehicle manufacturer), that the vehicle on which the lamp is installed, complies with the standards. However, we can advise you of the relationship of your product to Standard No. l08. This should prove helpful in dealings at the O.E.M. level.

There are two types of O.E.M. lighting equipment: lamps that are required by Standard No. l08, and supplementary lamps that do not come under its coverage. Although your product literature indicates that the highmounted heated taillamp supplements the original equipment lamp, it is not clear whether the heated signal lamp serves as the required signal lamp or is a supplement to the original equipment. Accordingly, this letter discusses how Standard No. l08 treats both original required and original supplemental lighting equipment.

If you are the manufacturer of original lighting equipment required by Standard No. 108, but not the manufacturer of the vehicle on which it is installed, the vehicle manufacturer, and not you, has the legal responsibility under the Act and Standard No. l08 of ensuring that the equipment complies with the standard, and of certifying that the vehicle meets all applicable Federal motor vehicle safety standards. As a practical matter, however, vehicle manufacturers generally insist that equipment manufacturers provide assurance that their products meet Federal standards, but the "certification" they may insist upon is not required by the Act. You are correct that there is no standard that applies to heated lamps as such. The Federal standard that applies is the one imposed by Standard No. l08 for the particular equipment item (taillamps or signal lamps in this instance).

If you are manufacturing a lamp as an original equipment supplement to required original lighting equipment, the burden remains on the vehicle manufacturer who installs it. The only restriction on a supplementary lamp that Standard No. l08 imposes is that it not impair the effectiveness of the required lighting equipment (paragraph S5.1.3, formerly paragraph S4.1.3). Your lamps "splice into" the wiring for the taillamps and "marker lamps", according to your product literature. Therefore, it is incumbent upon the vehicle manufacturer to ensure that this installation does not negatively affect the performance of the required taillamps and signal lamps, or otherwise impair its effectiveness. If the vehicle manufacturer determines that no impairment exists, then it may certify that its vehicles comply with all applicable Federal motor vehicle safety standards.

Observing that the product literature depicts the heated taillamp installed in the upper corners of a school bus body, we must also call attention to an additional provision of Standard No. l08. The location depicted is one that is frequently used for the clearance lamps required by Standard No. l08. Paragraph S5.4 of Standard No. l08 (formerly S4.4) forbids the optical combination of clearance lamps and taillamps. Thus, your lamp cannot optically combine these two functions if it is to be used as new vehicle equipment.

Other enclosures to your letter indicate that at present the heated lamp is being installed on buses in use, that is to say, as non-original equipment. The requirements imposed by Standard No. l08 and the Act for aftermarket manufacturers of lighting equipment differ from those for original equipment. If the lamp you produce is intended to replace an original equipment certified lamp, it is considered replacement equipment. As a manufacturer of a replacement taillamp or signal lamp, the legal obligation to produce a complying equipment item falls squarely upon you, as does the certification responsibility. If the lamp is intended only to replace a supplemental lamp, you are not required to certify. However, there may be instances in which your lamp is interchangeable with original certified equipment, and even though you may not intend it as replaceable lighting equipment, you may encounter questions from state and federal authorities if it is not manufactured and certified in accordance with Standard No. 108.

Finally, you should be aware of your responsibilities under the Act in the event that your products do not comply with Standard No. l08, or incorporate a safety related defect (an example would be the inability of the lens to withstand the heat produced during the lamp's operation without warping or cracking). If you or this agency determine that a noncompliance or safety related defect occurs in any item of replacement equipment that you manufacture, you have the obligation to notify purchasers, and to remedy the problem through repair, repurchase, or replacement of the item. With respect to original equipment, this obligation falls upon the manufacturer of the vehicle on which it is installed.

If you have any further questions we shall be happy to answer them. As you requested, we are enclosing a copy of Mr. Gravengood's letter of April 3.

Sincerely,

Stephen P. Wood Acting Chief Counsel

/ref:108 d:8/ll/89

1970

ID: 19782.nhf

Open

Mr. Jurgen Babirad
Rehabilitation Technology Associates, Inc.
P.O. Box 540
Kinderhook, NY 12106

Dear Mr. Babirad:

This responds to your letter requesting information regarding the modification of a 1997 Ford E-150 full size van for a driver with quadriplegia as a result of a spinal chord injury. You explain that the driver was evaluated and trained by a driver rehabilitation specialist who prescribed a high-tech steering system that incorporates a reduced diameter steering wheel and reduced effort steering. Specifically, you request permission to remove the original equipment manufacturer's (OEM) steering column and steering wheel so that you may install the high tech steering system to accommodate the driver's restricted strength and range of motion.

This letter provides the relief you seek. The National Highway Traffic Safety Administration (NHTSA) will not institute enforcement proceedings against a commercial entity that modifies the steering wheel and column on a vehicle to accommodate the condition you described.

We would like to begin by explaining that NHTSA is authorized to issue Federal motor vehicle safety standards that set performance requirements for new motor vehicles and items of motor vehicle equipment. Manufacturers are required to certify that their products conform to our safety standards before they can be offered for sale. After the first sale of a vehicle, manufacturers, distributors, dealers, and repair businesses are prohibited from "knowingly making inoperative" any device or element of design installed on or in a motor vehicle in compliance with an applicable standard. In general, the "make inoperative" prohibition (49 U.S.C. 30122) requires businesses which modify motor vehicles to ensure that they do not remove, disconnect, or degrade the performance of safety equipment installed in compliance with an applicable standard. Violations of this prohibition are punishable by civil penalties of up to $1,100 per violation.

There is no procedure by which businesses petition for and are granted permission from NHTSA to modify a motor vehicle. Businesses are permitted to modify vehicles without obtaining permission from NHTSA to do so, but are subject to the make inoperative provision of 49 U.S.C. 30122. In certain limited situations, we have exercised our discretion in enforcing our requirements to provide some allowances to a business which cannot conform to our requirements when making modifications to accommodate the special needs of persons with disabilities.

Replacing the vehicle's original steering column and steering wheel and removing the driver's air bag could affect compliance with three standards: Standard No. 203, Impact protection for the driver from the steering control system, Standard No. 204, Steering control rearward displacement, and Standard No. 208, Occupant Crash Protection. For example, Standard No. 208, Occupant Crash Protection, requires vehicles to be equipped with specific manual and automatic restraint systems (e.g., seat belts and air bags) and to meet specified injury criteria during a test. Removing the air bag would affect the vehicle's compliance with Standard No. 208. However, as noted above, in situations such as this one where a vehicle must be modified to accommodate the needs of a particular disability, we have been willing to consider violations of the "make inoperative" prohibition to be justified by public need. As I have already noted above, NHTSA will not institute enforcement proceedings against a business that modifies the steering column, steering wheel, and air bag to accommodate the condition you describe.

We caution, however, that only necessary modifications should be made. In addition, you should consult with the manufacturer to determine how to disarm the air bag. The manufacturer should be able to provide information on how the modification can be safely performed. We are enclosing a warning label stating that the air bag has been deactivated. For the safety of everyone who may ride in the vehicle, we ask that you affix this label on the sun visor above the deactivated air bag. Finally, if the vehicle is sold, we urge the owner to advise the purchaser that the vehicle has been modified and consider reinstalling the removed safety equipment if appropriate.

You may be interested to know that the agency is working on a proposal to regulate the aftermarket modification of vehicles for persons with disabilities by setting out exemptions from the make inoperative prohibition only for certain standards, including Standard No. 208, and under certain conditions. In place of the agency's current approach where each request for exemption from the make inoperative prohibition is reviewed case-by-case, this proposal would give clear guidance to modifiers about principles to follow when considering vehicle modifications to accommodate someone's disabilities. We published a notice of proposed rulemaking on September 28, 1998, in the Federal Register and are in the process of reviewing public comments.

If you have other questions or require additional information, please contact Nicole Fradette of my staff at this address or by phone at (202) 366-2992.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosure
Warning Label
ref:VSA
d.6/23/99

1999

ID: 1978y

Open

Mr. Larry P. Egley
109 Travelers Trail
St. Charles, MO 63303

Dear Mr. Egley:

This is in reply to your letters with respect to the Sudden Stop Flasher (SSF), your invention, now registered with the U.S. Patent Office. Your first letter is a "Request for Evaluation/Interpretation" of your invention; your second is "An Appeal for Variant Interpretation." I regret the delay in responding.

You have explained that the SSF operates as follows: when a vehicle reaches a certain high rate of deceleration, the SSF automatically flashes all three of the stop lamps on passenger cars at a rapid rate. If the vehicle has crashed, the SSF continues to flash until the ignition switch is recycled. You recognize that Federal Motor Vehicle Safety Standard No. l08, Lamps, Reflective Devices, and Associated Equipment, requires stop lamps to be steady burning. You nevertheless ask for a favorable interpretation because the SSF will be actuated only rarely, and "the concept of flashing tail lights to get the attention of drivers has already been approved in the hazard warning system." Because of the expense of developing the SSF, you state that you are not willing to undertake it "unless NHTSA would indicate at least tentative acceptance, subject to demonstration and testing of a working model."

You are correct that Standard No. l08 requires stop lamps to be steady burning, and hazard warning signal lamps to flash (generally through the turn signal lamps). The primary reason for the distinction is that stop lamps are intended to be operated while the vehicle is in motion, while the hazard warning lamps are intended to indicate that the vehicle is stopped. Each lamp is intended to convey a single, easily recognizable signal. If a lamp which is ordinarily steady burning begins to flash, the agency is concerned that the signal will prove confusing to motorists, thereby diluting its effectiveness.

Even if we did not have this reservation about the SSF, we could not change the steady burning requirement through interpretation. A change could be made through rulemaking only.

We do not currently have information indicating that a flashing signal would be superior to a steady burning one. The SSF is based upon the concept that a flashing lamp increases vehicle conspicuity, and hence should shorten the reaction time of following drivers. As you noted, "whether the SSF could significantly improve safety is the primary consideration." In research sponsored by this agency that led to the adoption of the center high-mounted stop lamp, a field study was conducted using 600 taxicabs in San Diego and Sacramento. The cabs were equipped with one of three kinds of center lamps, a steady-burning one, or one that flashed at 2.5 Hz, or one that flashed at either l.5, 2.5, 4.5, or 7.0 Hz depending on the degree of deceleration. The test fleet accumulated 4l million miles. The study found that there was no statistically significant differences among the lamps (Mortimer, R.G., Field test evaluation of rear lighting deceleration signals: II - Field test. Final Report, DOT-HS-806-125, 198l).

The agency would be unlikely to issue grants or fund research for the SSF, a proprietary device. Most of its vehicle safety research is devoted to obtaining data to support the development of standards that are more performance-oriented.

I am sorry that we cannot be more positive in our response, but we do appreciate your interest in reducing traffic accidents, and deaths and injuries associated with them.

Sincerely,

Stephen P. Wood Acting Chief Counsel

/ref:108 d:8/8/89

1989

ID: 19795.rbm

Open

Ms. Kristin M. Werth
Weinberger & Kanan
Mile High Center, Suite 1910
1700 Broadway
Denver, CO 80290

Dear Ms. Werth:

This responds to your letter requesting an interpretation of Federal Motor Vehicle Safety Standard No. 208, Occupant Crash Protection. Specifically, you asked for a description of how the date of manufacture is defined under the standard. You expressed particular concern about the parts of the standard that mandate the installation of air bags and warning labels.

For purposes of Standard No. 208, as well as the other Federal motor vehicle safety standards, the date of manufacture is the date on which the assembly and other manufacturing operations are completed for a motor vehicle. See 49 CFR Part 571.7 and 49 CFR Part 567.4(g)(2) and (5). Therefore, the "manufactured date" of a vehicle would typically be the production date at the vehicle manufacturer's factory.

The exception is a vehicle manufactured in two or more stages for which special provisions apply. "Incomplete vehicles" may be completed to the standards in effect on the date of manufacture of the incomplete vehicle, the date of final completion, or a date between those two dates. (1)

I hope the above information is responsive to your inquiry. Should you have any further questions or need any additional information regarding this matter, please feel free to contact

Ms. Rebecca MacPherson of my staff at this address or by telephone at (202)366-2992.

Sincerely,
Frank Seales, Jr.
Chief Counsel
ref:208
d.4/17/2000

1. See 49 CFR sections 567 and 568. Note that section 568.6 specifies that this provision shall be superseded by any conflicting provisions of a standard that applies by its terms to vehicles manufactured in two or more stages. FMVSS No. 208 has no such provision.

2000

ID: 19796-2

Open

Mr. Yaichi Oishi
General Manager
Vehicle Safety Regulation
Toyota Technical Center, USA, Inc.
1850 M Street, N.W.
Washington, DC 20036

Dear Mr. Oishi:

This responds to your letter asking how Standard No. 102, Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect (49 CFR 571.102) would apply to the hybrid electric vehicle Toyota produces. I regret the delay in responding. According to your letter, this hybrid vehicle uses both an electric motor and gasoline engine to provide motive power and the engine starts and stops as needed, instead of idling constantly as most engines do.

You were concerned about S3.1.3 of Standard No. 102, which provides that "the engine starter shall be inoperative when the transmission shift lever is in a forward or reverse drive position." Your hybrid electric vehicle would not comply with a literal reading of this provision because the gasoline engine starts automatically with the transmission in any position except Neutral to supplement the electric motor's power and/or to recharge the batteries.

While the starter for the gasoline engine is not inoperative when it starts automatically as needed, we do not interpret S3.1.3 as prohibiting your design. In construing our standards, we bear in mind the purpose underlying the provision that we have been asked to interpret. In this case, you have correctly stated that the purpose of the inoperative starter provision is to ensure that the vehicle will not lurch forward or backward unexpectedly from a parked position when the starter is first engaged to start the vehicle. Your design does not allow the vehicle to turn on unless the transmission is in Park. We agree with you that this feature precludes any sudden unexpected movement of the vehicle, the precise problem the "inoperative starter" provision addresses.

After considering your letter, the agency intends to begin rulemaking to update the language of Standard No. 102 to address the technological advances in this area since the current language was adopted in 1968. Until that action is completed, we will interpret S3.1.3 of Standard No. 102 as requiring that driver activation of the engine starter must be inoperative when the transmission shift lever is in a forward or reverse drive position. This meaning effectively addresses the purpose of the requirement, while allowing flexibility for advanced designs. Consistent with this reading of the existing language, the design on your hybrid electric vehicle would not be prohibited by S3.1.3 of Standard No. 102.

Sincerely,
Frank Seales, Jr.
Chief Counsel
NCC-20:PAtelsek:6-2992: OCC# 19796:6/22/99:Dfujita9/29/99
cc: NCC-0l Subj/Chron; NCC-20 (PA), NPS-01, NSA-01
Interp. std. 102; Redbook (2)

ID: 19797-1.pja

Open

Mr. Yaichi Oishi
General Manager
Vehicle Safety Regulation
Toyota Technical Center, USA, Inc.
1850 M Street, NW
Washington, DC 20036

Dear Mr. Oishi:

This responds to your letter asking for an interpretation of how Federal Motor Vehicle Safety Standard No. 103, Windshield Defrosting and Defogging Systems, would apply to the Prius, a hybrid electric vehicle Toyota produces. I apologize for the delay in our response. According to your letter, the vehicle utilizes both an electric motor and gasoline engine to provide motive power. The wheels and the powertrain cannot be mechanically disconnected. For this reason, the engine cannot be "raced" when the transmission shift lever is in the "neutral" position, as it can with most vehicles.

Your concern is with S4.3(b)(2)(i) of Standard No. 103, which states that "The engine speed shall not exceed 1,500 r.p.m. in neutral gear." You believe that the purpose of this provision is to allow testing to be conducted on a stationary vehicle with the engine racing up to 1,500 r.p.m. You state that, since conventional engines can be raced while stationary in either "park" or "neutral," that we should interpret the term "in neutral gear" as meaning any shift position in which motive power is not transmitted to the wheels, including "park."

We agree that the purpose of the provision at issue is to allow testing of a vehicle's defrosting/defogging system to be conducted with the vehicle stationary but with its engine at a speed up to 1,500 r.p.m. This, in essence, gets and keeps the engine up to its ordinary operating temperature during the test. Since, because of the new technology used in your vehicle, the engine speed cannot be maintained at 1,500 r.p.m. when the shift position is in "neutral" but can be when the shift position is in "park," we would interpret the standard to permit the shift position to be in "park" for purposes of S4.3(b)(2)(i) of Standard No. 103. Please note that this interpretation reflects consideration of the purposes underlying Standard No. 103 generally and S4.3(b)(2)(i) in particular and should not be considered to have any broader application. We also note that S4.3(b)(2)(ii) provides another option which allows for testing in a forward drive position.

If you have any further questions, please feel free to contact Edward Glancy of my staff at this address or by telephone at (202) 366-2992.

Sincerely,
Frank Seales, Jr.
Chief Counsel
ref:103
d.3/10/2000

2000

ID: 1979y

Open

To: DOERNBERG, David G.
From: ROBERTSON, Marcia
Subject: aia Date: 09/15/89
Reply by: 00/00/00
----------------------------------------------------------------------------
----

Mr. William G. Kinstler American Flatlight Company 414 Richard Road Rockledge, FL 32955

Dear Mr. Kinstler:

This is in reply to your letter with respect to a portable illuminated device, called the "Flatlight." You have asked for our review of the advertising brochure that you enclosed, and for copies of any regulations regarding this product. I regret the delay in responding.

Your brochure indicates that Flatlight is intended for mounting on the door of a motor vehicle, and connects to the battery by a wire. As shown, it contains a corporate logo, which "emits a pleasant glow." The purpose is to readily identify the presence of "Real Estate Companies and other Sales Agents who need to meet clients at night."

This agency establishes the Federal motor vehicle safety standards that apply to new motor vehicles and motor vehicle equipment. It also establishes regulations pertaining to safety-related defects in motor vehicles and motor vehicle equipment. As Flatlight is advertised almost exclusively for motor vehicle applications (we note a single remark that it can be used for store and window fronts), it is "motor vehicle equipment" subject to the jurisdiction of this agency.

The only Federal motor vehicle safety standard that applies to portable lighting equipment applies only to warning triangles without self-contained energy sources, and thus does not cover the rectangular Flatlight. The Federal lighting standard on lamps, reflective devices, and associated equipment, permits Flatlight to be installed as original equipment (e.g., installed by the dealer on a new vehicle before its delivery to its first purchaser), if it does not impair the effectiveness of lighting equipment required by the standard. It seems unlikely that the "glow" of a door mounted Flatlight would impair the effectiveness of the required side marker lamps and reflectors; indeed the device might serve more readily to identify the vehicle at night.

We surmise, however, that Flatlight is intended for the aftermarket and for installation on vehicles in use. It appears easily transferable from one vehicle to another. Installation of aftermarket motor vehicle equipment is generally permissible under Federal law. However, the installation is prohibited if it is installed by a motor vehicle manufacturer, distributor, dealer or repair business and if such installation renders inoperative, either wholly or partially, equipment installed in accordance with a Federal motor vehicle safety standard. Installation of Flatlight does not appear to present this possibility.

Even though Flatlight is not prohibited under Federal law, you must still determine whether it is permissible under the laws of any State in which it may be installed. We are unable to advise you on State law, but recommend that you consult the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard, Arlington, VA 22203.

Finally, because Flatlight is "motor vehicle equipment" you, as its manufacturer, must notify purchasers and provide a remedy upon any determination by you or this agency that it contains a defect related to motor vehicle safety.

Sincerely,

Stephen P. Wood Acting Chief Counsel

ref:l08 d:8/ll/89

1970

ID: 19809-1.bk!

Open

Mr. Stuart Leopold
President
DGS Enterprises, Ltd.
2800 Covered Bridge Road
Merrick, NY 11566

Dear Mr. Leopold:

This responds to your letter of April 1, 1999, addressed to Walter Myers of my staff, in which you sought clarification of my letter to you of March 30, 1999. You stated that the people to whom you would like to show my March 30 letter might not understand some of the legal discussions. You asked, therefore, that we rephrase the March 30 letter to state that the use of "Tire Mend" is neither endorsed nor prohibited by the Federal motor vehicle safety standards (FMVSSs).

I am sorry you found that our earlier letter might be difficult for some people to understand. However, there is a limit to the extent to which we can simplify our discussion of how various requirements in 49 U. S. Code, Chapter 301 (Safety Act) might affect your product.

We are charged with enforcing the Safety Act in its entirety and not just the FMVSSs. In considering how a product may be affected by the statutes and regulations we administer, we consider application of the many different parts of the Safety Act. We also consider the various persons who may ultimately read our opinion letters.

I stated in my March 30 letter that because of the self-certification system established by the Safety Act, we neither "approve, disapprove, test, endorse, or certify" motor vehicles, motor vehicle equipment, or related products. I also said in my letter that "the National Highway Traffic Safety Administration has not issued any FMVSSs specifically applicable to substances such as 'Tire Mend'".

We cannot make the categorical statement, however, that the use of "Tire Mend" is not prohibited under the Safety Act. I explained the "make inoperative" provision of the Safety Act in my letter. As applied to your product, the issue is not whether the product is expressly addressed in the FMVSSs, but whether a provision of the Safety Act would prohibit the installation of "Tire Mend" if the product adversely affected the compliance of a tire with the FMVSSs. I also explained that the "make inoperative" provision applies only to manufacturers, distributors, dealers, and repair businesses, but does not apply to vehicle owners. Nevertheless, this agency encourages vehicle owners to maintain the safety of their vehicles and equipment and not make changes that would adversely affect compliance with a safety standard.

I hope this explanation of my March 30 letter is helpful to you.

Sincerely,
Frank Seales, Jr.
Chief Counsel
ref:119
d.6/23/99

1999

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.