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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 10191 - 10200 of 16510
Interpretations Date
 search results table

ID: nht94-5.32

Open

DATE: May 16, 1994

FROM: John A. Griffiths

TITLE: None

ATTACHMT: Attached To Letter Dated 6/3/94 From John Womack To John Griffiths (A42; Std. 102)

TEXT: Dear Sir,

I should be pleased if you would inform me whether or not motor vehicles post 1990 are required by law to have a [Illegible Word] safety switch so that the vehicles cannot be started in gear if they have automatic or manual transmissions.

Thankfully yours,

(804) 874-8039

DRN spoke to Mr. Griffiths on 5/26. Mr. Griffiths essentially wanted to know whether, on a manual transmission vehicle, there must be a neutral safety switch, i.e., making it impossible to start the vehicle unless the clutch is fully depressed. as the owner of a MY93 Dodge, with a manual transmission, he was concerned about this.

ID: nht94-5.33

Open

DATE: May 16, 1994

FROM: R.H. Goble -- President, R.H. Goble Enterprises, inc.

TO: Chief Counsel, NHTSA

TITLE: NONE

ATTACHMT: Attached to letter dated 6/29/94 from John Womack to R.H. Goble (A42; STD 108; VSA 108(a)(2)(a))

TEXT: R.H. Goble Enterprises has developed a new lighting system to be added to motor vehicles. We are soliciting input from you as to the current rules and regulations and how they may apply to this new system. Specifically, can brake lights appear over the wheels and in the front of a vehicle?

Traffic and highway safety is a critical factor in our society. New ideas have evolved over the years to improve highway safety. The most recent innovation is the introduction of the eye-level rear view brake light. Rear-end collisions have been reduced by fifty two percent as a result.

This new concept worked because it introduced a change which was immediately apparent to drivers following a vehicle. We believe this same principle should be applied to the front and sides of a vehicle. The, other drivers could discern the braking intent of the operator from any direction. This is especially true in congested areas where one must watch for vehicles entering from side streets and on coming traffic. This can be accomplished by simply wiring the brake lights to the directional lights with an ordinary bridging connector.

NOTE: When wiring the brake lights to the front directional and side marker lights the brake lights are over ridden by the directional lights.

Also, when the brake lights are applied both sides light up, with the directional light on one side flashing.

Brake lights will not interfere with the directional lights or hazard lights functions.

As seen in the enclosed packet we are introducing a further safety enhancement for vehicles. The Wheel Well lighting system provides indication of the drivers intent when viewing the vehicle

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from any direction. This takes more of the guess work out of being a defensive driver.

The obvious awareness of another vehicle and the intentions of its operator are the keys to avoiding a collision. The Wheel Well lighting system provides complete illumination around the vehicle, with all light indications or signals being visible from any direction. Therefore, we can provide the same safety advantages for all drivers, not just those approaching from the rear. In addition, the reflection of the Wheel Well lights off of the wheels will draw attention to the vehicle even more.

This is not just an idea. Our lighting system is already being used on a few vehicles locally. Four hundred lights have been produced to perform a marketing trial and provide consumer feedback.

The Wheel Well lights utilize standard lights, bulbs, and wiring. They are inexpensive and simple to install. We believe this new patent pending product will do even more to revolutionize highway safety than even the eye-level rear view brake light.

Please understand that these new lights are standard vehicle lights already manufactured by Peterson Manufacturing. Our system merely provides for placement of the newly designed lights above the wheels. They are directly wired into the vehicle and provide the same signaling around the vehicle as can be seen from the rear of any standard vehicle.

Please advise us as to the legality of providing this new system in existing vehicles.

ID: nht94-5.34

Open

DATE: May 16, 1994

FROM: Gianfranco Venturelli -- Director General, Automobile Lamborghini

TO: Christopher A Hart -- Deputy Administrator, NHTSA

COPYEE: J. Womack

TITLE: FMVSS No. 214, Side Impact Standard Petition

ATTACHMT: Attached to letter dated 8/5/94 from John Womack to John E. Gillick (Std. 214 and Part 555)

TEXT: Dear Mr. Hart:

Automobili Lamborghini S.p.A. (Lamborghini) hereby petitions the National Highway Traffic Safety Administration (NHTSA) to permit Chrysler Corporation (Chrysler) to include Lamborghini vehicles in its vehicle fleet for the purpose of compliance with the side impact standard's phase-in calculation. n1 In the alternative, Lamborghini petitions NHTSA to grant the company a temporary exemption from the side impact standard requirements until September 1, 1996, pursuant to its authority under 49 C.F.R. @ 555.

n1 Automobili Lamborghini S.p.A., 40019 Sant'Agata Bolognese (BO)-via Modena, 12-Italy, is a joint stock company organized under the laws of Italy. Chrysler Corporation, on January 31, 1994, sold Lamborghini to a group of investors led by MegaTech Ltd., a Bermuda corporation.

Background

On October 30, 1990, NHTSA promulgated revisions to Federal Motor Vehicle Safety Standard No. 214 regarding side

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impact protection. See 55 Fed. Reg. 45,722 (Oct. 30, 1990) (codified at 49 C.F.R. @ 571.214). Standard 214 specified vehicle crashworthiness requirements in terms of accelerations measured on anthropomorphic dummies in test crashes and specified strength requirements for side doors. 49 C.F.R. @ 571.214(b). The standard included the following phase-in schedule: (1) at least 10% of a manufacturer's passenger cars produced on or after September 1, 1993, and before September 1, 1994, must comply; (2) at least 25% of passenger cars manufactured on or after September 1, 1994, and before September 1, 1995, must comply; and (3) at least 40% of passenger cars manufactured on or after September 1, 1995, and before September 1, 1996, must comply. 49 C.F.R. @ 571.214 S8. In promulgating the rule, NHTSA recognized that it could take single-line manufacturers up to three years to develop and implement the engineering changes necessary to comply with the standard. 55 Fed. Reg. at 45,749. Accordingly, Standard 214 provides an alternative to the phase-in option. The standard permits manufacturers to delay implementation of the side impact protection standard for one year (until September 1, 1994) if after that date all vehicles produced meet the standard's requirements. 49 C.F.R. @ 5711.214 S1(d).

As noted supra, Lamborghini was sold by Chrysler on January 31, 1994. Chrysler, as the corporate parent of Lamborghini, had included Lamborghini vehicles in its vehicle fleet for side impact protection compliance purposes. Due to the number of different Chrysler models that required modifications to meet Standard 214, Chrysler elected to comply through the phase-in alternative. Lamborghini vehicles were scheduled to be modified during the last year of the phase-in period because

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of the relatively low number of vehicles the subsidiary produced and the lead time necessary for engineering and tooling modifications.

Discussion

Chrysler's sale of Lamborghini has placed Lamborghini in a difficult position regarding compliance with the side impact safety standard. Prior to the sale, Lamborghini had a good faith basis for believing that it would not need to meet the requirements of Standard 214 until the production year beginning September 1, 1996 due to its status as part of Chrysler's vehicle fleet. Now that Lamborghini is not part of the Chrysler fleet, the company cannot utilize this flexibility. While the first segment of the phase-in requirement (10% compliance for all passenger cars produced on or after September 1, 1993) has already passed, Lamborghini still could elect Standard 214's alternative compliance date that requires full compliance by September 1, 1994. However, Lamborghini does not now have sufficient lead time to complete the engineering analysis and implement the tooling changes to comply with the standard for the production year beginning either September 1, 1994 or September 1, 1995. In addition, since Lamborghini only produces one model, it cannot phase in compliance even if this were technically possible and the first year of the phase-in period had not already begun. Accordingly, Lamborghini respectfully requests NHTSA to grant this petition to enable Chrysler to count Lamborghini vehicles in Chrysler's fleet for purposes of side impact compliance, or in the alternative, grant Lamborghini a temporary exemption from the requirements of Standard 214. Granting either request would be in the

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public interest as it will not affect overall motor vehicle safety because Chrysler has agreed to include Lamborghini vehicles in its vehicle fleet for purposes of Standard 214 compliance, thereby ensuring that, consistent with the objectives of the National Traffic and Motor Vehicle Safety Act, the total number of vehicles meeting the side impact requirements will be the same as if Chrysler had not sold its Lamborghini subsidiary.

I. FLEET AVERAGE CALCULATION.

As part of the contract with MegaTech, Ltd. for the sale of Lamborghini, Chrysler has agreed to include Lamborghini vehicles in its vehicle fleet for purposes of Standard 214 compliance. This action will ensure that the overall number of vehicles complying with the standard through the phase-in period will be the same as if Chrysler had not sold its subsidiary. This approach gives Lamborghini, a single line manufacturer, the three-year lead time needed to develop and implement the engineering changes necessary to satisfy the standard's requirement envisioned in the preamble to the final rule. All Lamborghini vehicles produced after September 1, 1996, will satisfy Standard 214.

II. TEMPORARY EXEMPTION.

In the alternative, Lamborghini requests NHTSA to grant the company a temporary exemption to Standard 214 through August 31, 1996, pursuant to 49 C.F.R. @ 555.6(a). In the meantime, as noted above, Chrysler will include, for purposes of production volume compliance, all Lamborghini vehicles in Chrysler's phase-in calculations. Beginning September 1, 1996, all Lamborghini vehicles produced will fully comply with the standard.

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The application of Standard 214 to Lamborghini without adequate leadtime would subject the company to substantial economic hardship. In order to comply with this standard, Lamborghini must modify the door structure and redesign the aperture and door for its automobiles. In view of the extremely short lead time between now and the beginning of production for next year's model, it is simply not possible to complete the necessary engineering and related retooling necessary to meet the September 1, 1994, target date in the regulations.

Lamborghini is confident, however, that it will be able to comply with the standard by September 1, 1996, but not sooner, in accordance with the following schedule:

1. May 1994 - 1995

- engineering, drawing and development of preliminary prototypes.

2. June 1995 - May 1996

- final tune-up tests, and modification of production tooling.

3. July 1996

- begin production of automobiles in compliance with new Standard 214.

4. September 1996

- delivery of automobiles in compliance with new Standard 214.

The estimated cost of the research and development and the tooling changes necessary to meet the new standards is estimated to be between

6

We would reiterate that the financial hardship this action would cause is primarily due to the absence of sufficient leadtime to implement this standard. Lamborghini had only recently begun analysis of the engineering changes necessary to meet the standard and has not yet begun to implement the necessary tooling changes and purchasing because, until the sale occurred, Lamborghini had a good faith basis for believing it would not have to meet the standard until September 1, 1996.

* * *

Thank you for your consideration in this matter. Please contact Michael J. Grossman, our designated agent for U.S. certification and regulatory liaison (516-829-8694) or John Gillick of Winthrop, Stimson, Putnam & Roberts, our legal counsel (202-775-9870), if you have any questions about this petition.

Enclosures

ID: nht94-5.35

Open

DATE: May 16, 1994

FROM: Doris Hull -- Owner, Sikeston Trailer Sales, Inc.

TO: Robert Hellmuth -- Chief Counsel, NHTSA

TITLE: None

ATTACHMT: Attachment dated 8/12/94 Letter from John Womack to Doris Hull (Std. 109, 119 & 12)

TEXT:

This letter is in regards to a phone conversation with Mr. Walter Meyers on May 13, 1994 that David McCormick and I had. The conversation was concerning trailers with new and used tires. The understanding that we got that we are allowed to do is included in this letter. I would appreciate a quick response from you.

We understood that we, as manufactures, can sell to a dealer, who picks up a load of trailers, the trailers being stacked on top of each other; we can install new tires on the bottom trailer that would meet the requirements of standard 120 and for the other trailers that are stacked we can sell the used tires and rims mounted but not installed on trailers. That if a tractor trailer loaded with trailers was sold we could sell the used tires and rims but not installed on the trailers. All used tires and rims would meet the D.O.T. Standard 120 qualifications. We understood that an individual can request used tires and rims, we can sell them to them and install them if requested by the individual.

Your prompt attention to this matter is greatly appreciated. We have also talked with George Shifflett concerning what Mr. Meyers informed us.

Please do not hestitate calling me at the number listed above if there are any questions I may be able to help with.

ID: nht94-5.36

Open

DATE: May 12, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Hamilton K. Pyles -- Cairncross & Associates, Inc.

TITLE: None

ATTACHMT: Attached to letter dated 4/5/94 from Hamilton K. Pyles to NHTSA Office of Vehicle Safety Compliance

TEXT:

This responds to your letter of April 5, 1994 to the Office of Vehicle Safety Compliance. You would like to import into the United States "a kit for a compact custom truck bed". You ask what Federal laws and regulations govern the importation, sale, and installation of wooden pickup bed kits. You also ask what you must do, initially, to import a trial sample bed into the United States.

You have described the kit as consisting of plans and instructions in English, wooden and plywood parts of the bed, unspecified "metal parts," fastenings, wiring and "lights."

As a general rule, all motor vehicles and items of motor vehicle equipment must conform (and be certified by their manufacturer to conform) to all applicable Federal motor vehicle safety standards issued by this agency in order to be imported into the United States and sold here. The only motor vehicle equipment in your kit that is covered by a Federal standard is "lights." They are subject to our Standard No. 108 LAMPS, REFLECTIVE DEVICES AND ASSOCIATED EQUIPMENT (49 CFR 571.108), and, thus, must conform and be certified as conforming in order to be imported into the United States. Certification is indicated either by a DOT symbol on the equipment, or by a statement of compliance attached to the equipment or on the container in which it is shipped.

If the lighting equipment does not conform, or if you are unsure whether it does, you are permitted by 49 CFR 591.5(j) to import one or more sample beds or kits for "research, investigations, studies, (or) demonstrations" for a period of up to three years after first obtaining written approval from the Office of Vehicle Safety Compliance. If the lighting equipment does conform, there is no limitation upon the number of items you may import.

You have also written that the truck bed will be offered to the general public as a replacement for existing truck beds, and to "manufacturers who place specialized beds (campershells, utility company boxes, etc.) on pick-up frames that they buy new without factory installed beds."

Although you have no responsibility under the National Traffic and Motor Vehicle Safety Act for compliance of a vehicle with the Federal safety standards when the conversion work is completed, we should like to apprise you of the obligations of a converter, since the converter will look to you to provide it with complying lighting equipment. With respect to the general public, under section 108 (a) (2) (A) of the Act (15 U.S.C. 1397 (a) (2) (A)) , the removal of the old truck bed and lights and

installation of the new truck bed kit by a "manufacturer, distributor, dealer, or motor vehicle repair business" must not "knowingly render inoperative in whole or in part any device or element of design installed in accordance with" a Federal motor vehicle safety standard. For example, one of the named parties would violate the Act if it removed the old bed with complying lamps and installed a new bed with noncompliant lamps if that person knew that the lamps did not comply. Similarly, if the bed in some manner obscured the center highmounted lamp which is now required for pickups manufactured after September 1, 1993, that could be a violation of the Act. If a manufacturer is installing the truck bed on a new chassis, it becomes responsible for ensuring that the completed vehicle fully meets the Federal motor vehicle safety standards, and for certifying its compliance.

Finally, as the importer of the kit, you become its "manufacturer" under our laws and may have some responsibility for notification and remedy of safety related defects or noncompliances that are discovered in the kit either before or after its installation on motor vehicles.

I enclose an information sheet for your information, and hope that this letter has been helpful to you.

ID: nht94-5.37

Open

DATE: May 12, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Nicholas S. Copass -- Sales Manager, Titeflex Industrial Americas

TITLE: None

ATTACHMT: Attached to letter dated 9/29/93 from Nicholas S. Copass to David Elias (OCC-9161), letter dated 3/6/91 from Anthony J. Laliko to Vernon G. Bloom, and letter dated 3/18/91 from Arthur H. Neill, Jr. to Anthony J. Lalikos

TEXT:

This responds to your letter to Mr. David Elias, formerly of this office, concerning the manufacture of hydraulic brake hose assemblies by Titeflex and Russell Performance Products. I regret the delay in responding.

We recently responded to a letter from Mr. Jim Davis of Russell about the labeling of the hose assemblies. I have enclosed a copy of that letter for your information. In that letter, we explain that both Titeflex's and Russell's designations need not be marked on the assembly. Instead, since Russell is manufacturing the assemblies and will market the assemblies, Russell's designation must be marked. The designation will identify Russell as the manufacturer of the assembly in the event of a possible noncompliance or defect with the assembly.

I hope this information is helpful. If you have any questions, please do not hesitate to call Ms. Deirdre Fujita of my staff at (202)-366-2992.

ID: nht94-5.38

Open

DATE: MAY 12, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Jim Davis -- President, Russell Performance Products

COPYEE: Nicholas S. Copass

TITLE: None

ATTACHMT: Attached to letter dated 10/22/93 from Jim Davis to David Elias (OCC-9249), letter dated 10/22/93 from Jim Davis to NHTSA Office of Vehicle Safety Standards, Crash Avoidance Division, and letter dated 11/16/93 from Jim Davis to David Elias

TEXT:

This responds to your letters to Mr. David Elias, formerly of this office, about the requirements of Standard 106, "Brake Hoses," for labeling hydraulic brake hose assemblies. I apologize for the delay in responding.

You explain in your letters that Russell holds a license to manufacture brake hose assemblies from Titeflex Corporation, a manufacturer of brake hoses, end fittings and assemblies. Titeflex supplies Russell with braided hose, and Russell manufactures the end fittings that Titeflex designed, using Titeflex's engineering drawings. Russell assembles the Titeflex hose with the end fittings, and "markets these hose assemblies (in) the marketplace."

You ask about marking the hose assemblies with a designation that identifies the manufacturer of the assembly, pursuant to S5.2.4 of Standard 106. You ask whether both Russell's and Titeflex's designations are required to be labeled, or only the designation of Russell.

The answer is only Russell's designation is required to be marked. Russell is manufacturing the assemblies and will market the assemblies. Russell's designation will identify Russell as the manufacturer of the assembly in the event of a possible noncompliance or defect with the assembly.

You also ask whether Titeflex's hose must be labeled with the information specified in *S5.2.1 and S5.2.2 of Standard 106. The first part of your question asks whether the labeling requirements apply to bulk brake hose "with a stainless braided outer covering." The answer is yes. The standard does not exclude braided brake hoses from the labeling requirements.

The second part of this question asks about the required labeling for hoses that are part of brake hose assemblies. You ask for confirmation that Standard 106 does not require the hose to be labeled once the hose is part of a brake hose assembly. Your understanding is correct with regard to S5.2.2. The last sentence of that paragraph states: "The information (specified in S5.2.2) need not be present on hose that is sold as part of a brake hose assembly or a motor vehicle." (The quoted sentence was adopted at 56 FR 50520, October 7, 1991, to replace the sentence you referred to.) Accordingly, the hose need not bear the labeling of S5.2.2 when the hose is part of an assembly. However, the hose must still bear the stripes required by S5.2.1 unless, to quote from S5.2.1, the hose is

"manufactured for use only in an assembly whose end fittings prevent its installation in a twisted orientation in either side of the vehicle."

I hope this information is helpful. If you have any further questions, please contact Deirdre Fujita of my staff at the above address, or by phone at (202) 366-2992.

ID: nht94-5.39

Open

DATE: May 12, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Jerry Schwebel -- Executive Vice President, Travel Safety Children's Products, Inc.

TITLE: None

ATTACHMT: Attached To Letter Dated 11/9/93 From Jerry Schwebel To Walter Myers (OCC-9316)

TEXT: Dear Mr. Schwebel:

This responds to your letter to Mr. Walter Myers of my staff asking about a particular feature of your "air-filled car seat" and how Federal Motor Vehicle Safety Standard No. 213, "Child Restraint Systems," would apply. I apologize for the delay in responding.

Your letter and the promotional literature you enclosed describe the car seat as having a 5-point belt system to provide upper and lower torso restraint. The seat also has a strap that crosses in front of the child's chest, that attaches to each side of the child seat "to offer additional side impact protection by keeping the leading side of the seat attached to the opposite side so as to prevent the child from rolling out." You state that the strap is not part of the primary restraint system and is non-load bearing in a frontal impact. You ask if there is any problem with the strap feature.

By way of background information, the National Traffic and Motor Vehicle Safety Act, 15 U.S.C. @ 1381, et seq. (Safety Act), authorizes the National Highway Traffic Safety Administration (NHTSA), to issue Federal motor vehicle safety standards for new motor vehicles and new items of motor vehicle equipment. NHTSA, however, does not approve motor vehicles or motor vehicle equipment, nor do we endorse any commercial products. Instead, the Safety Act establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet all applicable safety standards. The following represents our opinion based on the facts set forth in your letter.

Standard 213 specifies requirements for child restraint systems used in motor vehicles and aircraft, to reduce the number of children killed or injured in motor vehicle crashes and in aircraft. S5.2.2, "Torso impact protection," states in part that each add-on, forward-facing child restraint system

shall have no fixed or movable surface . . . [d]irectly forward of the dummy and intersected by a horizontal

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line . . . parallel to the SORL [seat orientation reference line illustrated in Figure 1A of the standard] . . . and passing through any portion of the dummy, except for surfaces which restrain the dummy when the system is tested in accordance with S6.1.2.1.2, so that the child restraint system shall conform to the requirements of S5.1.2 and S5.1.3.1.

The purpose of S5.2.2 is to prohibit child seats from having any surface or component that can be mistaken by motorists to be a means of adequately restraining the child occupant in a crash. 43 FR 21470, 21475 (May 18, 1978). A strap in front of the dummy would be prohibited by S5.2.2, unless it is provided to restrain the dummy in S6.1.2.1.2's dynamic test so that the system conforms to Standard 213's injury criteria for head and chest accelerations and occupant excursion. Since you indicate the strap is not meant to be load bearing in a frontal impact, it does not appear that the strap would perform adequately. n1 Accordingly, it appears the strap is prohibited.

n1 The strap may be installed if it provides adequate protection. To measure the adequacy of the performance of a child seat with such a strap, the child seat will be tested at 20 mph with the strap placed in front of the child, but without the dummy strapped into the restraint system. The child seat must pass the occupant excursion and other dynamic performance requirements without use of the primary restraint system. See, test procedures for 20 mph test, S6.1.2.1.2, S6.1.2.3.1(c)(ii).

I hope this information is helpful. If you have any further questions or need additional information, please call Ms. Deirdre Fujita of my staff at (202) 366-2992.

Sincerely,

ID: nht94-5.4

Open

TYPE: INTERPRETATION-NHTSA

DATE: December 8, 1994

FROM: Kenneth Sghia-Hughes -- Research Engineer, Solectria Corporation

TO: Chief Counsel -- NHTSA

TITLE: NONE

ATTACHMT: Attached to 2/2/95 from Philip R. Recht to Kenneth Sghia-Hughes (A43; Part 301; Std. 102)

TEXT: Dear Sir/Madam:

Solectria Corporation produces electric vehicles (EV's) on the chassis of existing new vehicles and is currently developing a ground-up electric vehicle. In the course of reviewing NHTSA's regulations covering vehicle manufacturers, we have identified qu estions regarding the application of specific standards and regulations to our electric vehicles. Solectria Corporation requests a formal interpretation of these regulations with regard to the following issues:

1. 49 CFR 571.301, FMVSS #301 -- Fuel system integrity

Opinions vary as to the applicability of this standard to electric vehicles with no petroleum-based fuel source. The stated purpose of the standard is "to reduce deaths and injuries occurring from fires that result from fuel spillage. . . . and resul ting from ingestion of fuels during siphoning." The standard states that it applies to "passenger cars, and to multipurpose passenger vehicles, trucks and buses that have a GVWR of 10,000 pounds or less and use fuel with a boiling point above 32 degrees F. . . . .", implying that it applies to all passenger vehicles, but to only those trucks with GVWR of 10,000 pounds or less and that use fuel with a boiling point above 32 degrees F. On the face of it, this standard appears not to apply to electric veh icles with no liquid fuel, but enough doubt as to NHTSA's interpretation of this standard with respect to EV's exists that Solectria requests an official interpretation from NHTSA.

2. 49 CFR 571.102. FMVSS #102 -- Transmission shift lever sequence, starter interlock, and transmission braking effect

This standard is written so that it literally only applies to vehicles with manual or automatic transmission. Most of our vehicles delivered to date and all of the models currently in production have a single speed transmission which requires no shif ting, either manual or automatic. Solectria vehicles nevertheless meet the requirements of this standard for automatic transmission vehicles, in keeping with what Solectra believes is the intent, if not the letter, of the regulation. Solectria requests a clarification of this standard with regard to single speed transmissions, as commonly encountered in electric vehicles. If deemed applicable to single speed transmission vehicles. Solectria requests that S3.1.3 Starter interlock, be rewritten or inte rpreted to include the initial activation of EV motor controllers as well as engine starters.

Please feel free to contact me for any additional information.

Sincerely,

ID: nht94-5.40

Open

DATE: May 12, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: David Fabrycky

TITLE: None

ATTACHMT: Attached To Letter Dated 12/4/93 From David Fabrycky To NHTSA Chief Counsel (OCC-9433)

TEXT: Dear Mr. Fabrycky:

This responds to your letter about an aftermarket product you wish to manufacture. The product is a child safety seat buckle shield, which is intended to prevent a child from opening the buckle on a child restraint system. You state that your device would cover the buckle and prevent the child from gaining access to the pushbutton of a child seat buckle. To depress the pushbutton, the device requires that a latch be actuated and the cover pivoted away from the buckle. You indicated that the device requires "manual dexterity to exert the forces in many directions simultaneously."

Although we understand your concern that young children not be able to easily unbuckle a child safety seat, we have reservations about devices that interfere with the unbuckling of the seats. I hope the following discussion explains those reservations and answers the questions in your letter about the effect of our regulations on your product.

Our agency has 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 Safety Standard No. 213, "Child Restraint Systems," which applies to all new child restraint systems sold in this country. However, Standard 213 does not apply to aftermarket items for child restraint systems, such as your buckle shield. Hence, you are not required to certify that this product complies with Standard 213 before selling the product.

Additionally, you are not required to get "approval" from this agency before selling the buckle shield. NHTSA has no authority to "approve" motor vehicles or motor vehicle equipment, nor do we endorse any commercial product. Instead, the National Traffic and Motor Vehicle Safety Act establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet our safety standards. The agency periodically tests vehicles and equipment items for compliance with the standards, and also investigates alleged safety-related defects.

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Although we do not have any standards that directly apply to your product, there are several statutory provisions that could affect it. Manufacturers of motor vehicle equipment such as your buckle shield are subject to the requirements in sections 151-159 of the Safety Act concerning the recall of products with defects related to motor vehicle safety. The agency does not determine the existence of safety defects except in the context of a defect proceeding, and thus is unable to say whether your product might or might not contain such a defect. However, the agency is concerned that people be able to easily and quickly operate a child safety seat buckle in an emergency. As the agency said in a rule on the force level necessary to operate child restraint buckles:

The agency's safety concerns over child restraint buckle force release and size stem from the need for convenient buckling and unbuckling of a child and, in emergencies, to quickly remove the child from the restraint. This latter situation can occur in instances of post-crash fires, immersions, etc. A restraint that is difficult to disengage, due to the need for excessive buckle pressure or difficulty in operating the release mechanism because of a very small release button, can unnecessarily endanger the child in the restraint and the adult attempting to release the child. (50 FR 33722; August 21, 1985)

It appears that your product could significantly increase the difficulty of using the buckle release and thus hinder a person attempting to release the belt in an emergency.

In addition, use of your product could be affected by section 108(a)(2)(A) of the Safety Act. That section prohibits commercial businesses from knowingly tampering with devices or elements of design installed in an item of motor vehicle equipment, such as a child safety seat, in compliance with the Federal motor vehicle safety standards. In determining the effect of a buckle shield on a child seat's compliance with Standard 213, NHTSA would evaluate the performance of the seat with the buckle shield installed. Standard 213 specifies several elements of design with which a child restraint system is unlikely to comply if your buckle shield were installed. Section S5.4.3.5 of Standard 213 requires the pushbutton release for any buckle on a child restraint to have a minimum area for applying the release force. Since your device will completely cover the buckle when installed, the buckle shield would cause the child restraint to no longer comply with this requirement. That section also requires the buckle to release when a specified maximum force is applied. Your device will not allow the buckle to release when the force is applied because it will cover the buckle and require force to be applied "in many directions simultaneously." Your device would thus cause the child restraint to no longer comply with that requirement. Therefore, commercial establishments cannot

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legally install your device on customers' child safety seats. In addition, section S5.7 of Standard 213 requires each material used in a child restraint system to comply with the flammability resistance requirements of Standard 302, "Flammability of Interior Materials." If your buckle shield does not comply with the requirements of Standard 302, commercial establishments cannot legally install your device.

The prohibition of section 108(a)(2)(A) does not apply to individual vehicle owners who may install or remove any items on child restraint systems regardless of the effect on compliance with Standard 213. However, our policy is to encourage child restraint owners not to tamper with or otherwise degrade the safety of their child restraints.

I hope this information is helpful. If you have any further questions, please contact Ms. Deirdre Fujita of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

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.