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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.”

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NHTSA's Interpretation Files Search



Displaying 13371 - 13380 of 16510
Interpretations Date
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ID: nht81-3.39

Open

DATE: 11/12/81

FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA

TO: Letts Industries Inc.

TEXT: This is in response to your letter of October 15, 1981, requesting a "testing exemption" to import a 1976 BMW 3.0 CSi to study the wear characteristics of steering linkage components.

It is our understanding that the 1976 BMW 3.0 Si incorporates steering linkage components substantially similar to those used in the 3.0 CSi. As BMW sold the 1976 3.0 Si in the United States, examples should appear from time to time in the used car market. Accordingly, your request is denied.

You may, of course, import the 3.0 CSi, under bond, and bring it into conformity with all applicable Federal motor vehicle safety standards if you wish.

SINCERELY,

LETTS INDUSTRIES, INC.

October 15, 1981

DOT

ATTN: Chief Administrator, NHTSA

Gentlemen:

This letter is to request a one year testing exemption for one imported automobile with the following description: Manufacturer: BMW Year of Construction: 1976 Model: 3.0 csi Serial Number: 226 0602

Our company manufactures steering linkage components for automobiles and our objective would be to study the wear characteristics of similar components on the above described vehicle.

If there is any further information you need for the granting of this exemption, please advise. Thank you.

C. E. Letts, Jr. President

ID: nht81-3.4

Open

DATE: 08/04/81

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Jean's Portable Highchair & Car Seat

TITLE: FMVSS INTERPRETATION

TEXT: Your letter to Mr. Vladislav Radovich was forwarded to my office for a reply. You wrote concerning information on Federal regulations applicable to child restraint systems. In particular, you were seeking agency approval for the child restraint system you propose to market.

Manufacturers of items of motor vehicle equipment, such as child restraints, are regulated by the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.), a copy of which is enclosed. The Act does not authorize the agency to approve products. Section 114 of the Act requires "self-certification" by manufacturers that their product complies with all applicable Federal motor vehicle safety standards.

In the case of your product, the applicable standard is No. 213, Child Restraint Systems. The new version of that standard, which went into effect on January 1, 1981, requires manufacturers to certify that their child restraint system can meet the dynamic test and other requirements of the standard. I have enclosed a copy of Standard No. 213 for your reference.

As you requested, I am returning the pictures enclosed with your letter. If you have any further questions, please let me know.

ENCLS.

July 15, 1981

Vladislav Radovich Office of Crashworthiness National Highway Traffic Safety Admin.

Dear Mr. Radovich:

We are enclosing copies of two of the letters we have sent out to get our car seat approved.

It was suggested that we write to you for your approval and to also get a copy of your Standard 213 Child Restraint Systems.

Statement of Facts:

1. This baby seat made of tough coated nylon is also anchored to metal car seat by one inch webbing and is absolutely safe.

2. With the use of car seat belts this car seat becomes the safest car seat available today and will protect the child just as securely as the adults are protected. With the use of "car seat belts" it will stand any collision teast.

3. Jean's Car Seat can be used in the front seat and is as safe as the back seat as long as "car seat belts" are used. (See brochure) This is a must with Jean's Portable "Car Seat" just as it is with other restraint units.

Picture #1 - I have sent this picture to show the 1 1/2" webbing anchor strap - the black one extending below the baby seat. This is to be used in cars in the back seat, that do not have shoulder straps. The lap seat belt must be threaded through the anchor strap which can be lengthened or shortened as needed and this keeps the top of the seat from going forward in a collision and is extra protection as the lap seat belt must go over the chair as is shown in the brochure under "Car Seat".

Picture #3 - shows shoulder seat belts in rear seat.

We sincerely hope you will advise us of your ideas and that you will approve our car seat. Please return pictures.

Willis. R. Dunkley Jean's Portable High Chair & Baby Products

June 4, 1981

Karl C. Clark Office of Vehicle Standards & Restraints

Dear Sir,

Your Mr. Robert Ingersol of the Safety Department at Salt Lake City, Utah, has referred your name to me as one who can advise me concerning the car seat and the safety factors involved when it is used as a restraining unit. The item is called "4 in one" Jean's Portable Highchair because it is not only a portable highchair but can be used as a car seat and a back pack and a cuddly coo.

You can see by the pictures enclosed it is an item we hope will assist many families in handling their young children. Our daughter, Jean, designed the unit and we added the car seat which if used properly with car seat belts will be perfectly safe. While it does not have the appearance of being as comfortable as many car seats on the market it does hold the child firm and yet is very comfortable and as safe as any adult in the car who uses "safety belts."

We need your advice in the matter and your suggestions when used as a "child restraintment". As you will note by the pictures, the car seat with the portable highchair attached can be set on a chair at the table instead of fastening it to the regular chair or a bench in the restaurant etc. It is also a very good back pack for babies and a cuddly coo. Thus it is a very practical item and will take care of the entire baby needs. We do not sell it as a plush item but a practical and convenient unit most young families can afford. As you will note the car seat folds up which makes it convenient as it folds into a small space when not in use. We have also enclosed most of the metal parts in a rubber covering which makes it very practical when sitting on car seats and furniture. We feel it has a marketable use for families and can be approved as a very safe car restraintment for children from 3 months until 2 years.

We will certainly appreciate an immediate reply on your judgement and ideas.

Thank you. Please return the pictures. . .

Willis R. Dunkley Jean's Portable Highchair & Car Seat

July 1, 1980

Michael A. Brown Consumer Product Safety Commission

Dear Mr. Brown:

Last summer my daughter Jean Brown was home from Germany for two months, she and her husband, a dentist, are spending three years in Viesbaden, Germany, to repay Uncle Sam for an Air Force scholarship they used for schooling in Washington. While home for two months she devised a portable high chair (see picture) later we turned it into a 3 in 1 - a portable high chair, a baby back-pack, and a cuddly coo. It seems safe and properly made for these items and people who use it love it. The patent is pending. Still further we have made a car seat from steel tubing which supports the portable high chair and which when fastened to the car seat belt provides a car seat which is comfortable, easy to handle, safe and light in weight and when not in use foldsup and it can be stored in small areas or placed in trunk of a car easily and handily. In addition when unstrapped from the seat belt it can be carried with the baby to a restaurant or other chairs and provides an opportunity for the baby to sit at the table with the parents. It can also be used on church pews or any seat or bench for that matter.

We have a Distributing Company in Phoenix as well as a lot of local stores who will purchase the 3 in 1 as well as the 4 in 1 units if it is a satisfactory consumer product and has your approval.

My daughter and her husband have two more years of school in Philadelphia for him to become an Orthodonist and they need all the help possible and for this reason, as their father, I am attempting to assist them with the "Jean's Portable High Chair."

From the pictures you can see our plans. We may have to change some buckles and the positive fasteners on the car seat need some refining etc. but the patent attorney has really encouraged us. Under seperate cover we are shipping it for your testing and approval. We need your guidance. Insurance Companies have already given us liability insurance and we have companies who will produce the portable high chair and a second manufacturing company who will tool up and produce the car seat on a mass production basis. The Phoenix distributing company now works with chain stores such as Skaggs, J.C. Penneys, etc and our hopes are already very high so we hope it meets with your approval. Jean's Portable High Chairx And Baby Products Inc., Willis R. Dunkley

Enclosure Omitted.

ID: nht80-4.29

Open

DATE: 12/18/80

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Ford Motor Company

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your letter of November 10, 1980, concerning Standard No. 213, Child Restraint Systems. You asked whether Ford may make a minor variation in the language specified in S5.5.2(g) for the label that must be permanently affixed to child restraints. As explained below, you may use the language proposed in your letter.

Section 5.5.1 of the standard requires that each child restraint be permanently labeled with specified information. Section 5.5.3 requires that the information specified in S5.5.2(g)-(k) must be displayed on the child restraint so that it is visible when the restraint is installed in the vehicle.

You state that the only information specified for the visible label that is applicable to the Ford "TOT GUARD" is the language in S5.5.2(g). That section provides that the child restraint must be labeled with the following words:

WARNING! FAILURE TO FOLLOW EACH OF THE FOLLOWING INSTRUCTIONS CAN RESULT IN YOUR CHILD STRIKING THE VEHICLE'S INTERIOR DURING A SUDDEN STOP OR CRASH:

SECURE THIS CHILD RESTRAINT WITH A VEHICLE BELT AS SPECIFIED IN THE MANUFACTURER'S INSTRUCTIONS LOCATED .

You are concerned that the above language may create potential confusion for users of the "TOT GUARD" since the user might be led to believe that more than one instruction is applicable. In your proposed revision, the word "each of" would be deleted from the warning and the word "instructions" would be changed to the singular.

Your proposed revision does not make any substantive change in the meaning of the warning specified for the label. Since the proposed change is a minor variation intended to clarify the language for restraints that only need to be labeled with one of the specified instructions, it is permitted.

SINCERELY,

Office of the General Counsel

Ford Motor Company

November 10, 1980

Stephen Oesch, Esq. Office of Chief Counsel National Highway Traffic Safety Administration

Dear Mr. Oesch: In accordance with our telephone conversation this morning, I request confirmation that the following variation of the language specified in subsection S5.5.2(g) acceptably meets the requirements of subsection S5.5.1 of Federal Motor Vehicle Safety Standard No. 213.

WARNING! FAILURE TO FOLLOW THE FOLLOWING [INSTRUCTIONS] CAN RESULT IN YOUR CHILD STRIKING THE VEHICLE'S INTERIOR DURING A SUDDEN STOP OR CRASH:

SECURE THIS CHILD RESTRAINT WITH A VEHICLE BELT AS SPECIFIED IN THE MANUFACTURER'S INSTRUCTIONS LOCATED UNDER THE SEAT PAD.

None of the instructions specified in subsections S5.5.2(h) through (k) of Standard No. 213 is appropriate for the installation of Ford's "TOT GUARD" child restraint system. Accordingly, were our labelling to employ literally the language set forth in subsection S5.5.2(g), the user would be provided with a single cautionary instruction following the warning paragraph but led to believe by the warning paragraph that more than one instruction is applicable. To avoid potential confusion on this point, we propose to delete the words and letter bracketed and struck-through above and add the underlined language.

I am confident that the Administration will find Ford's proposed version of the warning and instruction language for its TOT GUARD label unobjectionable. I should appreciate, however, having your confirmation that this is the case.

D. G. McGuigan

CC: J. A. STARKEY

ID: nht80-4.3

Open

DATE: 09/29/80

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Automobile Importers of America, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your September 4, 1980 letter to this office in which you requested confirmation that a certain tire size was listed for use with a particular rim size in a tire publication recognized by this agency for purposes of Standard 110. Page 1-11 of the 1980 Yearbook of the Tire & Rim Association lists a 5 1/2 inch rim as appropriate for use with 185/7OR14 tires. Thus, use of the 5 1/2 inch rims with that size tire would satisfy the requirements of paragraph S4.4.1(a) of Standard 110.

If you have any further questions or concerns regarding this matter, feel free to contact Stephen Kratzke of my staff.

SINCERELY,

AUTOMOBILE IMPORTERS OF AMERICA, INC.

September 4, 1980

Steven R. Kratzke Office of Chief Counsel NHTSA

Dear Mr. Kratzke:

Please confirm that radial tires sized 185/70HR14 are listed in an NHTSA-recognized tire publication for use with a 5 1/2J x 14 wheel rim and that this combination therefore meets the tire and rim matching requirements of FMVSS 110.

Thank you for your assistance.

VERY TRULY YOURS,

Bruce Henderson

ID: nht80-4.4

Open

DATE: 09/29/80

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Bridgestone Tire Company of America, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your July 17, 1980 letter to this office in which you posed six questions concerning Safety Standard 119 (49 CFR @ 571.119). The answers are set forth below following the number you assigned to each question in your letter.

(1) No, T&RA design information is not considered part of the T&RA yearbook for purposes of Standard 119. Design information refers to future tire sizes which will soon be produced, but which are not currently on the market. Since the specifications in the design information have not been formally approved by T&RA, as the yearbook entries have, the design information has not been subjected to the same type of examination by T&RA, and is not accepted by this agency.

(2) The Plunger Energy Table (Table II in Standard 119) published November 13, 1973 is the most current table we have published.

(3) The ETRTO petition to which you refer has not been granted by this agency. Shortly after receipt of the petition, we made a telephone contact with ETRTO requesting further information which would justify setting the plunger energy specifications at the requested levels. ETRTO was informed that the petition would not be considered until we had received this additional information, and no further information has been received. Similarly, your company requested the inclusion of additional values for Table II in a letter dated August 9, 1979. Mr. Finkelstein, our Associate Administrator for Rulemaking, sent a letter to Mr. P. L. Lab of Bridgestone on September 12, 1979 requesting further information and justification for including these values. To date, no further information has been received.

(4) Since there is no plunger energy value specified for tubeless tires with a load range greater than "J" in Table II, there are currently no requirements for plunger energy strength that these tires must meet. It is acceptable if you choose to test these tires at the strength level specified for load range "J" tires, but that level is significantly below what would be expected for higher load range tires.

(5) When your company submits matching information to this agency pursuant to the requirements of S5.1(a) of Standard 119. it is perfectly acceptable to send duplicate copies of the information you have furnished to the dealers, and no separate letter is necessary.

(6) I am aware of only three requests for plunger energy tests for tubeless tires with load ranges greater than "J". The first came from Michelin in 1973, when the Standard was being developed. NHTSA asked Michelin to provide information on the proposed values, and Michelin never raised the issue again. ETRTO submitted the petition you referred to in question 3, and never provided the further information requested. Bridgestone submitted a petition in August 1979 and never provided the further information requested. There have been no other requests for additional plunger energy values.

If you have any further questions concerning this matter, please feel free to contact Mr. Steve Kratzke of my staff at (202)426-2992.

Sincerely,

ATTACH.

BRIDGESTONE TIRE COMPANY OF AMERICA, INC.

July 17, 1980

Ref. No.: HH-80-152

Office of Chief Counsel

National Highway Traffic Safety Administration 400 Seventh Street S.W. Washington, DC 20590

Dear Sir:

We would appreciate your comments on the following questions relative to FMVSS 119.

1) Is TRA Engineering Design Information regarded as a part of the TRA Yearbook from the approval standpoint of FMVSS 119?

2) The latest table of Plunger Energy in FMVSS 119 that we have in our file is as of November 13, 1973. If this is not the latest one available, what is the most current?

3) We understand ETRTO sent a petition to you on November 2, 1977 regarding the Plunger Energy setting of "L" at 21,000 lbs. and "M" at 23,200 lbs. We would like to know if this has been approved by NHTSA.

4) Since the highest load ranges is "J" in our table, we have been testing our 18R22.5 20PR tire at load range "J" for Plunger Energy. We would like to know if this is appropriate.

5) We understand that we are supposed to submit Matching information to you whenever we come up with a new size tire in FMVSS 119. We do distribute this type of information to our dealers and end-users. Is it satisfactory for us to send a copy of this Matching information to you or should we submit a letter to you for this purpose?

6) We believe that we are not the only one with these questions and we wonder if a similar petition has been submitted from other associations or manufacturers.

Thank you in advance for your time in answering the above questions. We will be looking forward to your reply.

Very truly yours,

Hiromi Hamaya -- Vice President, Engineering Dept.

ID: nht80-4.5

Open

DATE: 09/29/80

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Elgene Tire Company

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your August 15, 1980 letter to this office requesting an interpretation of the requirements of Standard 120 (49 CFR @ 571.120). Specifically, you were concerned about paragraph S5.1.3, which permits the use of used tires on new vehicles other than passenger cars. The interpretations set forth below follow the same order used in your letter.

(1) New motor vehicles subject to Standard 120, which includes all motor vehicles other than passenger cars, may be equipped with used tires, pursuant to the provisions of paragraph S5.1.3 of the standard; provided, that the used tires are owned or leased by the vehicle purchaser and that they are installed on the vehicle at the request of the purchaser. This means that a vehicle manufacturer may not itself purchase used tires to install on new vehicles, nor may a vehicle purchaser authorize the manufacturer to install used tires not owned or leased by the purchaser of the vehicle.

(2) There is no limitation as to the axles on which used tires may be used. It would be permissible for a vehicle purchaser to ask a vehicle manufacturer to install the purchaser's used tires on each axle of the vehicle. The only requirement for axles in section S5.1.3 is that each axle must be equipped with tires, new or used, the sum of whose load ratings is at least equal to the gross axle weight rating for that axle.

(3) The used tires installed pursuant to paragraph S5.1.3 must be marked with the DOT number to indicate that the tires were originally manufactured in compliance with Standard 119. The January 1, 1978 date to which you referred means that all vehicles manufactured after that date and equipped with used tires under S5.1.3, must be equipped with used tires that originally complied with Standard 119 and have the DOT marking. The requirement does not mean that the used tires must have been originally manufactured on or after January 1, 1978, as you stated in your letter.

(4) For purposes of this section of Standard 120, used tires have been interpreted to include retreaded tires. To repeat what I stated under answer number "1" above, your statement that the vehicle purchaser may use retreaded tires on his vehicle if he requests the manufacturer to install retreaded tires is not entirely accurate. The retreaded tires may only be used if they are owned or leased by the vehicle purchaser.

The penalties for failure to comply with Standard 120 could be up to $ 1,000 for each violation, pursuant to the authority of sections 108 and 109 of the National Traffic and Motor Vehicle Safety Act of 1966, as amended (15 U.S.C. 1397 and 1398). Since Standard 120 applies to vehicles, the vehicle manufacturer would be responsible for any violation. This agency considers each separate use of an unauthorized tire on a vehicle to be a separate violation. For example, if a vehicle had six tires and each failed to comply with the requirements of Standard 120, the vehicle would have six violations, and civil penalties of up to $ 6,000 could be assessed against the vehicle manufacturer.

Enforcement of Standard No. 120 is under the general provisions of the Vehicle Safety Act. There are no special enforcement procedures. The agency has investigators who check vehicles to ensure that they comply with the applicable standards. If there is a noncompliance, the agency has the authority to sue the violator in a Federal court to collect the civil penalties, pursuant to section 105 of the Safety Act (15 U.S.C. 1394).

If the new vehicles were shipped without tires, as you suggested in the last question in your letter, Standard 120 would not apply to the vehicles. Section S5.1.1 specifies that the requirements of this standard apply to "each vehicle equipped with pneumatic tires for highway service." Only vehicles so equipped are subject to Standard 120.

You should be aware of the fact that this agency will soon publish a notice proposing changes in the requirements of section S5.1.3 of Standard 120. If you would like a copy of that proposal after it is published, or have any further questions on this matter, please contact Stephen Kratzke of my staff at this address.

SINCERELY,

August 15, 1980

Chief Counsel National Highway Traffic Safety Administration

Dear Sir:

In reference to U.S. Department of Transportation 571.120 standard no. 120: Tire Selection for motor vehicles other than passenger cars. Section S5.1.3 specifically.

It is my interpretation that:

1. New trailers, trailer/container chassis, trucks and buses, may be equipped with retread tires utilizing salvaged, used, worn tire bodies.

2. These retreads may not be used on steering axles.

3. The worn, used tire bodies (casings) must have been manufactured on and after January 1, 1978, as evidenced by the DOT symbol marked on one sidewall.

4. The purchaser of the equipment may use retread tires on these new vehicles when he requests the chassis manufacturer to install same.

Would you please give me your interpretation of the above. I have great difficulty in competitively securing new chassis O.E.M. retread business with the opposition ignoring the requirements as I interpret them to be. This is a very viable segment of the retread industry since retreads salvage worn tires by consuming far less energy and oil than do new tires.

Are there penalties for non-conforming?

Are there any enforcement procedures?

If the new chassis, trailers, etc. were shipped without tires at all -- would the D.O.T. 120/119 casing (used) tire requirement be applicable?

If further personal discussions are necessary please feel free to call upon me. I urge you to respond quickly.

Gene S. Rosenfeld, President

ID: nht80-4.6

Open

DATE: 10/03/80

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Excel Industries, Inc.

TITLE: FMVSS INTERPRETATION

TEXT:

October 3, 1980 NOA-30

Mr. S. A. Spretnjak Excel Industries, Inc. 1120 North Main Street Elkhart, Indiana 46514

Dear Mr. Spretnjak:

This responds to your August 15, 1980, letter asking several questions about your responsibilities for complying with Federal safety standards. You state that you manufacture a sun roof that can be installed by either an original vehicle manufacturer or a subsequent vehicle alterer.

Before responding to your specific questions, I would like to note that Federal safety standards apply to different manufacturers depending upon the standard involved. Equipment standards are the responsibility of equipment manufacturers while vehicle standards fall within the responsibilities of a vehicle manufacturer or alterer. For sun roofs, Standard No. 205, Glazing Materials, is an equipment standard and might apply to an equipment manufacturer who manufacturers sun roofs if they contain any glazing materials. Some vehicle safety standards might be affected also by the installation of a sun roof. The installer of a sun roof would be entirely responsible for compliance with all of the vehicle safety standards affected by the sun roof installation.

Your first question asks who certifies the sun roof if it is installed as original equipment on a vehicle. The equipment manufacturer who manufacturers the glazing would be responsible for certifying the glazing in accordance with Standard No. 205. The installer of the sun roof, the vehicle manufacturer, would certify the vehicle in compliance with all of the safety standards.

Second, you ask the same question as above with respect to a van conversion or motor home construction. Again, the equipment manufacturer would certify to the glazing standard, and the van converter or motor home builder would certify the vehicle in accordance with Part 567, Certification.

Third, you ask who must certify if a dealer adds a sun roof before sale of the vehicle to its first purchaser. The equipment manufacturer certifies to the glazing standard, and the installer of the device would attach an alterer's label to any vehicle in accordance with Part 567.7.

Your fourth question asks who certifies if a body shop adds the sun roof for a vehicle owner. As always, the sun roof glazing is certified by the equipment manufacturer. Businesses that modify used vehicles are not required to recertify those vehicles in compliance with any of the safety standards. Such businesses are prohibited from knowingly rendering inoperative any device or element of design installed in a vehicle in compliance with any safety standard.

Fifth, you ask whether as a window manufacturer your only responsibility is to certify to Standards Nos. 205 and 217. As stated earlier, you would have responsibility to certify to Standard No. 205. However, Standard No. 217 is a vehicle standard, and only a vehicle manufacturer or alterer has responsibility for certifying compliance with that standard.

Your final question asks about testing for compliance with the safety standards. Testing is usually conducted by vehicle manufacturers for those standards that apply to vehicles. For standards that apply only to equipment, the testing is usually done by the equipment manufacturer. When a vehicle is altered and the alterer must attach a label indicating that the vehicle continues to comply with the safety standards, the alterer can certify compliance through any means that, in the exercise of due care, he or she feels is sufficient to assure compliance with the safety standards. Methods available to alterers include: retesting, simulated testing, mathmatical modeling, or any other device appropriate for assesiing continued compliance with the standards.

Sincerely,

Stephen P. Wood Frank Berndt Chief Counsel

August 15, 1980

Roger Tilton ESQ Attorney Adviser Office of the Chief Council Department of Transportation 400 Seventh Street S.W. Washington, DC 20590

Dear Mr. Tilton:

Per our telephone conversation on August 12, 1980, this formal request for assistance is forwarded to your attention.

Excel Industries is a manufacturer of aftermarket sunroof products and specialty windows. The product consists of a glass lite, aluminum frame and plastic handle (see attached sketch for more details).

The product would be sold thru and to auto body shops, van converters and aftermarket distribution centers. The installation of the product could be done at facilities of the afore mentioned sales outlets or by the general public. The ultimate end use of the product and type of vehicle installation after sales are not controlled.

Based on the above information the question of product liability with regard to compliance and certification to Federal Motor Vehicle Safety Standards must be addressed.

Your assistance is required to answer the following questions:

ITEM #1 If a sunroof assembly is installed by an original equipment manufacturer (ie. Ford, GMC, Chrysler) on a domestic or Import vehicle, should the installer of the unit certify the product?

ITEM #2 If a sunroof assembly is installed by a motor home builder and/or van converter should the installer certify the product and label same per FMV regulation 567?

ITEM #3 If a vehicle is not titled ie. altered by dealer before sale, should the installer certify and label same per FMV regulation 567?

ITEM #4 If a body shop installs a sun roof for an individual should the installer certify and label same per FMV regulation 567?

ITEM #5 As a window manufacturer is it true that the certifications to FMVSS #205 and possibly FMVSS #217 are only FMVSS specifications that must be certified?

ITEM #6 Most FMVSS require testing on the final and completed vehicle. Does this place the burden of testing and/or certifying compliance on the OEM or final stage finisher? When a vehicle is altered can certification be attained by the following methods?

1) Retesting the entire vehicle 2) Simulate static testing the original vehicle versus the altered vehicle 3) Mathematically models 4) Can the installer by any other process, whereby, with due care provide evidence that the altered vehicle is as applicable to meeting the standard as the original vehicle.

A response prior to October 1, 1980, would be most appreciated.

Thank you for your cooperation,

EXCEL INDUSTRIES, INC.

S.A. Spretnjak

Attachment SAS/lmv cc: JEC PJT ALG

ID: nht80-4.7

Open

DATE: 10/03/80

FROM: AUTHOR UNAVAILABLE; S. P. Wood for F. Berndt; NHTSA

TO: William Blythe

TITLE: FMVSS INTERPRETATION

TEXT:

October 3, 1980 NOA-30

Mr. William Blythe 1545 University Avenue Palo Alto, California 94301

Dear Mr. Blythe:

This responds to your recent letter asking questions concerning the test procedures of Safety Standard No. 216 Roof Crush Resistance (49 CFR 571.216). Specifically, you are concerned with the proper applications of the test block forces specified in paragraphs S6.3 and S6.2(d) of the standard.

Your first question asks whether paragraph S6.3 allows the force on the test block to be applied "essentially opposite the initial contact point of the roof to the block." Paragraph S6.3 specifies that the force required by the standard shall be applied in a downward direction to the lower surface of the test device. Figure 1 of the standard illustrates this procedure and indicates that the force is to be centrally applied to the loading block. This procedure will be followed during tests by the agency to determine the compliance of particular passenger cars with Safety Standard No. 216. Therefore, we would not recommend that you apply the force opposite the initial contact point of the test block with the roof.

Paragraph S6.2(d) of the standard specifies that the initial contact point (with the roof) is on the longitudinal centerline on the lower surface of the test device and 10 inches from the forwardmost point of the centerline. Your second question asks whether this 10-inch dimension should be maintained if this places the leading edge of the test device behind the leading edge of the roof and the A-pillars. You state that this would occur with certain roof configurations which tend to be high in the center (i.e., in which the leading edge of the roof is not the highest point of the roof). A manufacturer should adhere to the 10-inch dimension even if this means the leading edge of the test device will not be forward of the A-pillar and the roof's forward edge. The test procedures specified are standardized procedures which the agency applies to all passenger cars regardless of roof configuration. Thus, the agency would maintain the 10-inch dimension even when testing a roof with a higher center than its leading edge.

I would like to point out, however, that the test procedures specified in the safety standards only document how the agency will conduct its compliance tests. Manufacturers are not required to test vehicles according to the procedures specified. A manufacturer's responsibility is to exercise due care to ascertain that its vehicles are in fact in compliance with the standards (15 U.S.C. 1397). If you are convinced that the procedures mentioned in your letter would accurately test the compliance of a particular vehicle with Safety Standard No. 216, you are certainly permitted to use those procedures. It is up to the manufacturer, however, to determine whether it has in fact exercised due care to determine compliance.

I hope this has been responsive to your inquiry.

Sincerely,

Frank Berndt Chief Counsel

August 24, 1980

Office of the Chief Counsel National Highway Traffic Safety Administration 400 Seventh Streee, S.W. Washington, D.C. 20590

Attention: Mr. Huyh Oates, Esq.

Reference: Motor Vehicle Safety Standard No. 216, "Roof Crush Resistance--Passenger Cars"

Gentlemen:

This letter is pursuant to my telephone conversation with Mr. Hugh Oates, on August 7, 1980. I am writing at the suggestion of Mr. Ed Jettner, NHTSA Project Engineer for MVSS 216, in an attempt to clarify certain aspects of that Standard. My organization is preparing to conduct tests in accordance with MVSS 216, and we perceive certain apparent ambiguities in the Test Procedure (paragraph S.6 of MVSS 216), for which we need clarification. Essentially, we have two questions to which we seek answers.

1. What should be the location of the applied force with respect to the upper surface of the test block?

Paragraph S6.3 reads: "Apply force in a downward direction to the lower (sic) surface of the test device...," but does not specify the location of the force on the surface of the block. Figure 1 seems to imply that the applied force should be centered in the upper surface of the block, but the location of the force is not dimensioned. Clearly, if the applied force could be located directly opposite the point of initial contact of the test block with the roof, the load transmitted to the roof would be unchanged, and at the same time the loading frame needed to maintain the block at its specified angles would be much simpler to construct. Thus the question is, can the applied force on the block be located essentially opposite the initial contact point of the roof to the block? This location is much preferred over the control location implied in Figure 1 of the specification because the test frame is thereby greatly simplified and no change results in the loads transmitted to the roof.

2. Should the ten-inch dimension from the leading edge of the loading block to the initial contact point be maintained even if this locates the leading edge of the block aft of the A-pillar (or leading edge of the roof)?

Paragraph S6.2(d) specifies that the "initial contact point ... is ... 10 inches from the forwardmost point..." of the loading block. Also, Figure 1 implies that the forward edge of the block is forward of the leading edge of the roof. For some roof configurations (which tend to be high in the center), holding the ten-inch requirement will move the leading edge of the block to a position aft of the leading edge of the roof. In such a situation, should the ten-inch dimension be maintained, or should the leading edge of the loading block remain forward of the A-pillar, thus increasing the ten-inch dimension? In order to simulate, even approximately, the actual loading which might be encountered in a roll-over, it would seem desirable to keep the leading edge of the loading block forward of the A-pillar so that the A-pillars are loaded directly.

Because of our test program schedule, we would appreciate your response at the earliest possible time.

Very truly yours,

William Blythe, Ph.D.

WB:gh

ID: nht80-4.8

Open

DATE: 10/03/80

FROM: FRANK BERNDT -- CHIEF COUNSEL, NHTSA; SIGNATURE BY STEPHEN P. WOOD

TO: Department of Transportation

TITLE: FMVSR INTERPRETATION

TEXT: This responds to your August 5, 1980, letter asking why it might not be possible for a manufacturer to certify a vehicle in compliance with the school bus safety standards if that vehicle transports 10 persons or less. You state that you would like the smaller sized vehicles to be constructed with the same safety features as larger school buses.

First, we would like to note that the school bus safety standards were originally applied only to the larger sized vehicles (more than 10 persons) because the larger sized vehicles were not previously required to comply with many of our safety standards. On the other hand, most of our standards apply to vehicles transporting 10 persons or less. Since these small vehicles were extensively regulated it was determined to be unnecessary to apply school bus safety standards to them.

In response to your particular question, a vehicle transporting 10 persons or less is a multipurpose passenger vehicle (MPV), not a bus or a school bus. A manufacturer is required by this agency to certify such a vehicle in compliance with the safety standards applicable to multipurpose passenger vehicles. This certification statement must be made on the vehicle's certification label. Therefore, a manufacturer cannot certify a vehicle as a school bus in compliance with the school bus safety standards unless the vehicle is of a size that puts it within the school bus category (more than 10 persons).

New York should not attempt to issue a regulation that would require multipurpose passenger vehicles to comply with all school bus safety standards. Some of those standards might conflict with other Federal safety standards applicable to MPV's and would, therefore, be preempted. For example, the school bus seating standard could not be applied to MPV's because their seating is regulated by other Federal safety because their seating is regulated by other Federal safety standards. However, since MPV's are not presently regulated in the areas of emergency exists, joint strength, or roof crush, New York could have a regulation requiring MPV's used to transport children to comply with these performance standards now applicable only to school buses. The vehicles would still be required to be certified only to the safety standards applicable to MPV's however.

ID: nht80-4.9

Open

DATE: 10/07/80

FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA

TO: Mr. C. Rodney Kuhns

TITLE: FMVSR INTERPRETATION

TEXT: This responds to your letter of August 10, 1980, in which you ask whether your proposed urban transport vehicle would be classified as an automoble or a motorcycle.

The agency's definition of "motorcycle" is given in 49 CFR @ 571.3, which reads in part:

"Motorcycle" means a motor vehicle with motive power having a seat or saddle for the use of the rider and designed to travel on not more than three wheels in contact with the ground.

Based on our understanding of your drawings, your proposed vehicle has more than three wheels. If our understanding is correct, your vehicle would be classified as a passenger car rather than as a motorcycle.

The requirements for passenger cars are more stringent than for motorcycles. We have enclosed a pamphlet prepared by the agency which gives a brief summary of the requirements and applicability of each of the Federal motor vehicle safety standards (issued as of August 1978). However, because of the volume of these standards, we do not provide copies directly. We have enclosed an information sheet which explains how you can obtain up-to-date copies of our standards and other regulations.

This agency does not license any vehicles for street or highway use. Licensing is handled by the States. We specify performance requirements, and any motor vehicle must be certified by its manufacturers as being in compliance with all applicable safety standards as of the date of its manufacture. If the vehicle complies with these requirements, we specify no further steps which must be taken.

The agency will provide confidential treatment for your letter and accompanying drawings.

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.