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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 1651 - 1660 of 2067
Interpretations Date

ID: 006814drn

Open

    Jim Soucie, Director of National Sales
    I.M.S., The Kiosk Company
    1538 So. 139th St.
    Omaha, NE 68144

    Dear Mr. Soucie:

    This responds to your September 16, 2003, FAX inquiry asking if NHTSAs laws apply to companies that place commercial advertisements on school bus exteriors.

    In your FAX, you write that your company "would like to place ads on the exterior sides of the bus, away from anything that moves; doors, mirrors or windows." In a telephone conversation with Dorothy Nakama of my staff, you stated that you want to place advertisements on only the exterior right and left sides of a school bus, and not on the vehicles front or rear. No advertisements will be placed in the school bus interior. The advertisements are to be made of vinyl, will be of as-yet unspecified dimensions, but will not completely wrap around the school bus. No school district or other school bus owner will place the advertisements themselves; instead, your company will arrange for a local contractor to apply the advertisements directly onto the school bus exterior, with no need for metal frames or brackets. The contractor will also remove the advertisements.

    By way of background, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue and enforce Federal motor vehicle safety standards (FMVSSs) that set performance requirements for new motor vehicles and new items of motor vehicle equipment. (49 U.S.C. 30101 et seq.) 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 the 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 FMVSS. In general, the "make inoperative" prohibition (49 U.S.C. Section 30122) requires businesses that modify motor vehicles to ensure that they do not remove, disconnect, or degrade the performance of safety equipment installed in compliance with applicable standards. Violations of this prohibition are punishable by civil penalties up to $5,000 for each violation. The maximum penalty for a related series of violations is $15,000,000.

    The issue arising from your situation is whether placement of the advertisements on a school bus would "make inoperative" the compliance of the school bus with labeling requirements for the bus exterior. [1] FMVSS No. 217, Bus emergency exits and window retention and release, specifies labeling requirements for school bus emergency exits, which may be doors, windows, or roof exits. Among other things, the standard requires that:

    • school bus emergency exits have the designation "Emergency Door" or "Emergency Exit" as appropriate, in letters at least 5 centimeters high, on both the inside and outside surfaces of the bus (S5.5.3(a)); and that
    • required school bus emergency exits "shall be outlined around its outside perimeter with a retroreflective tape with a minimum width of 2.5 centimeters and either red, white or yellow in color " (S5.5.3(c)).

    A person placing the advertisements on the bus may be subject to the make inoperative provision. Since the identification of the exits and doors of the school bus and the retroreflective tape are specified for safety reasons (i.e., to facilitate identification of the emergency exits and doors, especially in the dark), the advertisements must not obscure or cover the identifications of the exits and doors or the retroreflective tape.

    Other identification requirements for school buses, including color, are established by each State or local jurisdiction. In NHTSAs Highway Safety Program Guideline No. 17, "Pupil Transportation Safety," it is recommended that the word "school bus" be placed on the front and rear of the school bus between the 4-way/8-way flashing lights in letters as high as possible, and that no other lettering be on the front or rear of the vehicle. If any safety problems associated with schoolbus identification were to develop, NHTSA would consider regulatory requirements in the future.

    If you have any further questions about NHTSAs laws or programs, please feel free to contact Dorothy Nakama at this address or at (202) 366-2992.

    Sincerely,
    Jacqueline Glassman

    Chief Counsel
    ref:571.3#217




    [1] Our statute at 49 U.S.C. 30122 states: "A manufacturer, distributor, dealer, or motor vehicle repair business may not knowingly make inoperative any part of a device or element of design installed on or in a motor vehicle or motor vehicle equipment in compliance with an applicable motor vehicle safety standard prescribed under this chapter [49 USCS 30101 et seq.] unless the manufacturer, distributor, dealer, or repair business reasonably believes the vehicle or equipment will not be used (except for testing or a similar purpose during maintenance or repair) when the device or element is inoperative."

ID: 06-007052rls

Open

Mr. John Coursen

Product Line Manager

Structural Composites Industries

325 Enterprise Place

Pomona, CA 91768

Dear Mr. Coursen:

This responds to your email in which you seek confirmation of the proper bonfire test procedure when two or more compressed natural gas (CNG) fuel containers are connected to a common manifold under Federal Motor Vehicle Safety Standard No. 304, Compressed Natural Gas Fuel Container Integrity (Standard No. 304). Specifically, you ask if it would be proper to perform bonfire testing as specified under paragraph S8.3 with the entire group of interconnected containers and their shared pressure relief devices (PRDs) being tested, as opposed to testing containers individually. Based on the information you have provided, we would not conduct the Standard No. 304 test in the manner you describe, because the standard specifies that in the bonfire test, NHTSA tests CNG fuel containers individually. However, this does not prevent you from performing additional testing of your interconnected CNG fuel containers as a group if you wish to do so.

By way of background, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue Federal motor vehicle safety standards (FMVSSs) that set performance requirements for new motor vehicles and items of motor vehicle equipment (see 49 U.S.C. Chapter 301). NHTSA does not provide approvals of motor vehicles or motor vehicle equipment. Instead, manufacturers are required to self-certify that their products conform to all applicable safety standards that are in effect on the date of manufacture. NHTSA selects a sampling of new vehicles and equipment each year to determine their compliance with applicable FMVSSs. If our testing or examination reveals an apparent noncompliance, we may require the manufacturer to remedy the noncompliance, and may initiate an enforcement proceeding if necessary to ensure that the manufacturer takes appropriate action.

In your letter, you describe a system of CNG containers in which two or more fuel containers are interconnected by a manifold, with multiple PRDs attached to the manifold for venting the fuel containers as a group. You state that two CNG containers, with a common manifold with two PRDs, would be the expected configuration.

Standard No. 304 is an equipment standard, which specifies requirements for the integrity of [CNG] motor vehicle fuel containers (Standard No. 304, S1).[1] Standard No. 304 regulates CNG fuel containers individually with their PRDs: note, for example, that every use of the term CNG fuel container in the standard is singular, not plural. Regarding the bonfire test in particular, both S7.3 and S8.3 refer to the CNG fuel container, not to containers or to fuel container systems. This is reflected in our enforcement offices laboratory test procedure for Standard No. 304, which tests each CNG fuel container individually, and states that each shall be equipped with a pressure relief device or integral thermal protection system.[2]

Even though Standard No. 304 does not require multiple interconnected fuel containers to be tested as a group, you may perform such a test yourself. The FMVSSs provide a minimum threshold of safety, as established by performance and testing requirements. However, you are free to perform additional testing of your products in order to ensure that they do not pose an unreasonable risk of safety when used on the road.

If you have any further questions, please do not hesitate to contact Rebecca Schade of my staff at (202) 366-2992.

Sincerely yours,

Anthony M. Cooke

Chief Counsel

ref:304

d.3/29/07




[1] Note that multiple linked containers would be evaluated as a system under Standard No. 303, Fuel system integrity of compressed natural gas vehicles. Standard No. 303 is a vehicle standard, as opposed to an equipment standard like Standard No. 304. Standard No. 303 specifies fuel leakage limits for the vehicle when subjected to crash tests. The responsibility to meet Standard No. 303 is borne by the vehicle manufacturer in cases in which your system is installed on a new vehicle by or with the express authorization of that vehicle manufacturer. 

[2] NHTSAs Laboratory Test Procedure for FMVSS 304, Compressed Natural Gas (CNG) Fuel Container Integrity (TP-304-03, Dec. 8, 2003) is available at http://www.nhtsa.dot.gov/staticfiles/DOT/NHTSA/Vehicle%20Safety/Test%20Procedures/Associated%20Files/TP304-03.pdf. The quotes above are taken from page 13 of that document

2007

ID: 1982-1.31

Open

TYPE: INTERPRETATION-NHTSA

DATE: 03/26/82

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Baily Ford, Inc.

TITLE: FMVSR INTERPRETATION

TEXT:

March 26, 1982

Mr. Lloyd L. Bailey President Bailey Ford, Inc. West Main Street Road Malone, NY 12953

Dear Mr. Bailey:

This responds to your letter of December 4, 1981, requesting current regulations on installing a glider kit on an existing truck chassis. Your letter also asked about regulations on repowering a truck from gas to diesel, changing axles, and transmission changes. We apparently did not receive your letter of October 16 and regret the delay in responding.

Title 49 Code of Federal Regulations Part 571.7(e), Combining new and used components, is the agency's regulation on glider kits. It states that when a new cab is used in the assembly of a truck, the truck will be considered newly manufactured for the purpose of complying with Federal motor vehicle safety standards unless the engine, transmission, and drive axle(s) (as a minimum) of the assembled vehicle are not new, and at least two of these components were taken from the same vehicle. We have enclosed a copy of Part 571.7 for your convenience.

In a telephone conversation with Edward Glancy of this office, you indicated that you plan to add a new cab and other components to an existing vehicle's engine and axles. Unless you also use a transmission that is not new, the truck would be considered newly manufactured under Part 571.7(e). If the truck is newly manufactured under that Part, you must certify compliance with all applicable current Federal motor vehicle safety standards.

If the truck is not considered newly manufactured under Part 571.7(e), the changes would be considered in the nature of repairs and certification would not be required. However, under section 108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act, you as a repairer of a vehicle other than your own must not knowingly render inoperative the vehicle's compliance with an applicable Federal motor vehicle safety standard. This would mean that the reassembled truck with the glider kit installed must continue to meet the standards that it met before the alteration.

The agency does not have specific regulations concerning repowering a truck from gas to diesel, changing axles, or transmission changes. In making such changes, however, a person other than the vehicle's owner must not knowingly render inoperative the vehicle's compliance with any applicable Federal motor vehicle safety standard (except temporarily during the course of repairs).

The changes you refer to could affect compliance with a number of safety standards. For example, repowering a truck from gas to diesel could affect compliance with Standard No. 301, Fuel System Integrity. Changing axles could affect compliance wit standards in such areas as braking and tires.

We suggest that you examine the various Federal motor vehicle safety standards before making such changes. Due to the volume of requests, the agency does not provide copies directly. We have, however, enclosed an information sheet entitled "Where to Obtain Motor Vehicle Safety Standards and Regulations."

In your telephone conversation with Mr. Glancy, you asked what model year designation should be given when a glider kit is used. This agency is interested in the compliance of motor vehicles with safety standards and does not regulate the model year designation of vehicles. However, it is our belief that a vehicle considered to be newly manufactured under Part 571.7(e) would receive a new registration, while other vehicles would continue to carry their original registration. State laws may cover the question. Further, you should consult with the Federal Trade Commission with respect to the legality of calling such vehicles new, since that agency is concerned with any consumer fraud that might arise when a vehicle with used parts is sold as a new vehicle.

Sincerely,

Frank Berndt Chief Counsel

Enclosures

December 4, 1981

Dept. of Transportation Nat'l Highway Traffic Safety Admin. Washington, D.C. 20590

Gentlemen: Would you please send us current regulations on installing a glider kit on an existing truck chassis; also regulations on repowering a truck from gas to diesel, changing axles and transmission changes.

We asked for this information back on October 16th, and never received a reply.

Very truly yours,

Lloyd L. Bailey President

LLB:rm

ID: 16425-2.ogm

Open

Mr. Todd W. Loescher
Sales/Marketing Manager
Cliff Keyes Mfg. & Supply Co.
2015 West First
Newton, KS 67114

Dear Mr. Loescher:

This responds to your letter regarding aisle facing or side facing seats in commercial buses and multipurpose vehicles. Specifically, you ask whether there is a code of federal regulations for such seats, whether a seating manufacturer can provide attachment points on a seat or seat pedestal for seat belts intended for use on such vehicles and whether a seating manufacturer can attach seat belts on a seat or a seat pedestal for intended for use on such vehicles. In the latter two instances, you ask what code of federal regulations, if any, applies.

By way of background information, the National Highway Traffic Safety Administration (NHTSA) is authorized under Title 49, Chapter 301 of the U.S. Code to issue Federal motor vehicle safety standards that apply to the manufacture and sale of new motor vehicles and new items of motor vehicle equipment. Chapter 301 prohibits any person from manufacturing, introducing into commerce, selling, or importing any new motor vehicle or item of motor vehicle equipment unless the vehicle or equipment item is in conformity with all applicable safety standards. The Federal motor vehicle safety standards (FMVSS) are published as separate subsections within section 571 of volume 49 of the Code of Federal Regulations (CFR).

NHTSA has exercised its authority to establish five safety standards that may be relevant to your questions. The first is Standard No. 207, Seating Systems, which sets forth strength requirements for all "occupant seats". The second is Standard No. 208, Occupant Crash Protection, which sets forth requirements for occupant protection at the various seating positions in vehicles. The third is Standard No. 209, Seat Belt Assemblies, which sets forth strength, elongation, webbing width, durability, and other requirements for seat belt assemblies. The fourth is Standard No. 210, Seat Belt Assembly Anchorages, which establishes strength and location requirements for seat belt anchorages. The final relevant safety standard is Standard No. 302, Flammability of Interior Materials. This standard specifies burn resistance requirements for materials used in the occupant compartment of motor vehicles.

Your first question relates to regulations applicable to side facing seats in buses and multipurpose vehicles. Standard No. 207, Seating systems, establishes performance requirements for "occupant seats" in passenger cars, multipurpose passenger vehicles, trucks, and buses. In particular, S4.1 requires vehicles to have an occupant seat for the driver, S4.2 specifies general performance requirements relating to strength, S4.3 specifies requirements for restraining devices for hinged or folding seats or seat backs, and S4.4 specifies labeling requirements for seats not designated for occupancy while the vehicle is in motion. I note, however, that the seats you ask about are excluded from some, but not all, of the standard's requirements. The requirements of S4.2 do not apply to side-facing seats and the requirements of S4.2 and S4.3 do not apply to passenger seats in buses.

Your second and third questions concern whether a seat manufacturer can provide attachment points for seat belts, and seat belts, on seats and seat pedestals intended for use on side facing seats in buses and multipurpose vehicles and, if so, which regulations apply.

A seat manufacturer may provide seat belt attachment points on seats or seat pedestals and attach seat belts to those attachment points. I note that it would be the vehicle manufacturer, rather than the seat manufacturer, that would be required to certify the vehicle (with the seat installed) to the applicable safety standards.

Standard No. 208 establishes requirements for safety belts in cars, multipurpose passenger vehicles, trucks and buses. The type of belt required depends on the class of vehicle and location of the seating position within the vehicle. Buses with a gross vehicle weight rating (GVWR) greater than 10,000 pounds are not required to have safety belts at any location other than the driver's seat.

Standard No. 210 requires the installation of anchorages at any location where a safety belt is required by Standard No. 208.

Standard No. 210 excludes side-facing seats from its strength requirements specified in S4.2, but all other requirements of the standard apply to side-facing seats. We strongly recommend that belt anchorages for side-facing seats be of at least equivalent strength to anchorages for forward and rearward facing seats, since the strength specifications are only minimum performance requirements.

In addition to meeting the requirements of Standard No. 209, any fabric or trim provided with the seat belts themselves would have to meet the requirements of Standard No. 302, Flammability of interior materials.

I hope that this is responsive to your inquiry. If you have any further questions, please feel free to call Otto Matheke at (202) 366-5263.

Sincerely,
John Womack
Acting Chief Counsel
ref:208
d.3/13/98

1998

ID: 11417LOR.D2

Open

Mr. John Lord
The Booster Seat Company Ltd.
P.O. Box 15-573, New Lynn, Auckland
New Zealand

Dear Mr. Lord:

This responds to your letter asking about S5.5.1(a) in Federal Motor Vehicle Safety Standard No. 213, AChild Restraint Systems.@ I apologize for the delay in responding.

As discussed below, it is our opinion, based on the information in your letter, that your child restraint would not meet S5.1.1(a).

Background You state in your letter that your company has developed a child restraint system which conforms to an Australian child seat standard. A U.S. company wishes to manufacture and sell the child seat in the United States. You have had the child seat dynamically tested in the U.S., and believe that the seat achieved Avery favorable results@ with regard to the injury criteria of Standard 213. However, S5.5.1(a) of the standard was a problem.

Section S5.1.1 sets forth requirements for child restraint system integrity. Paragraph (a) of that section states that when dynamically tested, each child restraint shall:

Exhibit no complete separation of any load bearing structural element and no partial separation exposing either surfaces with a radius of less than 1/4 inch or surfaces with protrusions greater than 3/8 inch above the immediate adjacent surrounding contactable surface of any structural element of the system . . . .

Your child seat, a belt-positioning seat under S4 of Standard 213, consists of a high density polystyrene (commonly called

Astyrofoam@) platform, covered by a foam seat cover. The platform raises a child occupant approximately four to five inches to better fit a vehicle=s Type II belt system. The styrofoam platform also has arm rests formed into it.

The child seat cracked during the dynamic test of Standard 213. You sent us a child seat showing the cracks. However, you believe the cracking of the seat should not be considered to be a violation of S5.1.1(a) because, in your opinion, it does not pose a safety problem:

Clearly cracking/splitting on blow molded plastic possesses a serious safety issue with the possibility of pinching, cutting, or stabbing the child. We are confident that polystyrene possess [sic] no such problem. By nature, all cracked edges are soft. In addition, the product is sold with a 3/8" (10mm) foam seat cover.

Discussion

After reviewing your submissions and other information, our answer is that the child seat would not meet S5.1.1(a). Because the cracks occurred in a load bearing structural element of the child seat, S5.1.1(a) applies. Each crack is a Apartial separation exposing . . . surfaces with a radius of less than 1/4 inch . . . ,@ which is prohibited by S5.1.1(a).

This interpretation limits a previous agency interpretation of S5.1.1(a). In NHTSA=s July 8, 1988 letter to Mr. Donald Friedman of Liability Research, Inc. (copy enclosed), the agency addressed whether edges exposed by the tearing of a restraint that was made of woodfiber violated S5.1.1(a), when the edges exposed by the tearing were not lacerating (due to the composition of the material) and not likely to come into contact with the infant. NHTSA said that S5.1.1(a) did not prohibit the tearing because:

. . . In the preamble of [the rulemaking document proposing the requirement], we stated that our objectives in promulgating the system integrity requirements were to prevent a child=s excessive excursion or ejection from the system, and to ensure that the system does not fracture or separate in such a way as to harm the child. (43 FR 21470, 21473.) (Emphasis in text.)

In the Friedman letter, NHTSA focused on the highlighted text, stating that any partial separation resulting from the dynamic test Amust not expose surfaces with sharp edges that may contact the child.@ The agency did not examine the effect of partial separations on the structural integrity of the system. Nevertheless, the agency acknowledged that, @In promulgating S5.1.1(a), the agency intended to minimize dangers resulting from failures in the structural integrity of the system, rather than failures in the materials.@

Your child restraint is formed from a single piece of styrofoam; there is no reinforcement of any kind. As you note, due to the material comprising the restraint, the child restraint Ais inclined to crack.@ With your child restraint, a failure in the material results in a failure in the structural integrity of the system. While the edges formed by the partial separations you identified might not form Asharp@ edges, the partial separations are an indication that the structural integrity of the restraint has not been maintained. Thus, we conclude that the restraint would not meet the requirements of S5.1.1(a).

I hope this answers your inquiry. If you have further questions, please do not hesitate to contact Deirdre Fujita of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Samuel J. Dubbin Chief Counsel

Enclosure

ref:213 d:5/3/96

1996

ID: 1983-1.47

Open

TYPE: INTERPRETATION-NHTSA

DATE: 04/28/83

FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA

TO: Hon. C. H. Percy, U.S. Senate

TITLE: FMVSS INTERPRETATION

TEXT:

APR 28 1982 NOA-30

The Honorable Charles H. Percy United States Senate Washington, D.C. 20510

Dear Senator Percy:

This responds to your letter of April 11, 1983 (Ref. 3098500010) requesting information on behalf of your constituent, Mrs. D. Parutti. Mrs. Parutti is concerned about the growing practice of persons installing darkly tinted film on passenger car windows. She believes this is a dangerous practice because it prevents other drivers from seeing inside the vehicles. Following is a discussion of the implications under Federal law of installing these tinting films.

A Federal regulation already exists which, under certain circumstances, precludes the practice referred to by Mrs. Parutti. The National Highway Traffic Safety Administration has the authority to govern the manufacture of new motor vehicles and motor vehicle equipment. Pursuant to the National Traffic and Motor Vehicle Safety Act, we have promulgated Federal Motor Vehicle Safety Standard No. 205, Glazing Materials, which specifies performance and location requirements for glazing used in vehicles. These requirements include specifications for minimum levels of light transmittance (70 percent in areas requisite for driving visibility, which includes all windows in passenger cars) and abrasion resistance. This specification for light transmittance precludes darkly-tinted windows in new automobiles.

The agency has stated in past interpretations that solar films such as the type referred to in Mrs. Parutti's letter are not glazing materials themselves, and would not have to comply with Standard No. 205. However, installation of such films on new motor vehicles would be prohibited if the vehicle glazing no longer complied with the light transmittance or abrasion requirements of the standard. If a vehicle manufacturer or a dealer places the film on glazing in a vehicle prior to sale of the vehicle, that manufacturer or dealer has to certify that the glazing continues to be in compliance with the requirements of Standard No. 205. Section 108(a)(1) prohibits any person from offering for sale or selling any motor vehicle or equipment that fails to comply with applicable safety standards.

After a new vehicle has been sold to the consumer, he may alter his vehicle as he pleases, so long as he adheres to all State requirements. Under Federal law, the owner could install the tinting film on glazing in his vehicle whether or not such installation adversely affected the light transmittance and abrasion resistance of his vehicle's glazing. It should be noted, however, that section 108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act provides that no manufacturer, distributor, dealer or motor vehicle repair business shall knowingly render inoperative any device or element of design installed on or in a motor vehicle in compliance with an applicable motor vehicle safety standard. "Render inoperative" means to remove, disconnect or degrade the performance of a system or element of design installed pursuant to the Federal safety standards. Thus, none of those persons may knowingly install a solar film on a vehicle for its owner if that act would render inoperative the light transmittance or abrasion resistance of the vehicle glazing. Whether this would be the case would have to be determined by the person making the installation. Violation of this section can result in Federal civil penalties up to $1,000 for each violation.

The individual States must govern the operational use of vehicles by their owners since the agency does not have authority in this area. Thus, it would be up to the States to preclude owners from applying films or one-way glass on their own vehicles. Mrs. Parutti may wish to contact the National Committee on Uniform Traffic Laws (555 Clark Street, Evanston, Illinois 60204) to find out which States have laws that would preclude owners from placing solar film on their automobile windows.

Please contact Hugh Oates of my staff if you have any further questions (202-426-2992).

Sincerely,

Frank Berndt Chief Counsel

Enclosure Constituent's Letter

April 11, 1983

TO: Ms. Carole Walls Liaison Officer National Highway Traffic Safety Administration 400 Seventh Street, S.W. Washington, D.C. 20590

FROM: Charles H. Percy United States Senator

Because of the desire of this office to be responsive to all inquiries and communications, your consideration of the attached is requested. Your findings and views, in duplicate form, will be greatly appreciated.

Please reference our file number, 3098500010 and respond to:

Office of United States Senator Charles H. Percy Washington, DC 20510

Our File 3098500010

ID: 15091.ogm

Open

Mr. Jerry Roberts
Application Specialist
Vehicle Safety Systems
601 N.W. 25th Avenue
Ocala, FL 34475

Dear Mr. Roberts:

This responds to your letter of April 21, 1997, concerning a seat belt system you have designed. You asked us to evaluate whether the design would comply with S7.1.2.1 of Standard No. 208.

By way of background information, the National Highway Traffic Safety Administration (NHTSA) does not provide approvals of motor vehicles or motor vehicle equipment. Under 49 U.S.C. chapter 301, it is the responsibility of the manufacturer to ensure that its vehicles or equipment comply with all applicable standards. The opinion provided below is based on the facts provided in your letter.

As described in your letter, the seat belt assembly at issue is a Type 2 assembly intended for use in forward-facing rear seats in conversion vans. The lower end of the belt is attached to the vehicle floor and the upper end is attached to a retractor mounted on the roof support. The belt itself is fed through a crescent shaped slot in a mounting plate fixed to the roof rail. This crescent shaped slot allows the belt to assume different positions relative to a seat occupant depending on the height at which the belt is latched when fastened. The arc described by the crescent shaped slot is "preferably at least 5 cm longer than the width of the webbing."

Standard No. 208 was amended in a final rule published on

August 3, 1994, (59 FR 39472) to improve the fit and increase the comfort of safety belts for a variety of different sized occupants. S7.1.2.1 of Standard 208 reads as follows:

As an alternative to meeting the requirement of S7.1.2, a Type 2 seat belt assembly shall provide a means of automatically moving the webbing in relation to either the upper anchorage, or the lower anchorage nearest the intersection of the torso belt and the lap belt. The distance between the midpoint of the webbing at the contact point of the webbing and the anchorage at the extreme adjustment positions shall be not less than five centimeters, measured linearly.

According to your letter, the crescent-shaped slot located in the guide plate near the upper anchorage automatically moves the webbing in relation to the upper anchorage when the belt is latched around different sized users. This guide plate, which attaches to vehicle structure at the roof rail, is also an anchorage. S3 of Standard No. 210, Seat Belt Assembly Anchorages, defines a seat belt anchorage as "...any component, other than the webbing or straps, involved in transferring seat belt loads to the vehicle structure, including, but not limited to, attachment hardware ..."

If the distance, measured linearly, between the midpoint of the webbing at the contact point with the guide plate at the extreme adjustment positions is greater than five centimeters, it appears that your design would meet the requirement of S7.1.2.1. However, as an alternative means of providing the adjustment specified in S7.1.2, S7.1.2.1 requires that a Type 2 assembly shall provide a means of automatically moving the webbing in relation to the upper anchorage or the lower anchorage nearest the intersection of the torso and lap belts. If, in operation, the system you have designed does not automatically move the webbing in relation to the upper anchorage to accommodate occupants, the system you have designed would not meet S7.1.2.1. I note, however, that NHTSA is not able to make such a determination from looking at your drawings. Any determination of compliance would require testing of the system as installed in a vehicle.

NHTSA compliance testing has also revealed that guide plates, d-rings and other guiding devices can tear or sever webbing under the severe loads experienced in an impact. The guide plates incorporated in your design should therefore be constructed in a fashion which will minimize this risk.

You should also be aware that under 49 U.S.C. 30118-30122, each motor vehicle manufacturer must ensure that its vehicles are free of safety-related defects. If NHTSA or the manufacturer of a vehicle determines that the vehicle contains a safety-related defect, the manufacturer must notify purchasers of the defective vehicle and remedy the problem free of charge. Compliance with applicable standards does not relieve the manufacturer of responsibility in the event a defect exists.

I hope this information has been helpful. If you have any other questions, please contact Otto Matheke of my staff at this address or by phone at (202) 366-5253.

Sincerely,
John Womack
Acting Chief Counsel
ref:208
d:7/10/97

1997

ID: nht87-1.81

Open

TYPE: INTERPRETATION-NHTSA

DATE: 05/28/87

FROM: AUTHOR UNAVAILABLE; Erika Z. Jones; NHTSA

TO: Mr. Nobuyoshi Takechi

TITLE: FMVSS INTERPRETATION

TEXT:

Mr. Nobuyoshi Takechi Technical Manager MMC Services, Inc. 3000 Town Center Suite 1960 Southfield, MI 48075

Dear Mr. Takechi:

This responds to your letter requesting an interpretation of Standard No. 101, Controls and Displays. Your questions are responded to below.

By way of background information, the National Highway Traffic Safety Administration does not provide approvals of motor vehicles or motor vehicle equipment. Under the National Traffic and Motor Vehicle Safety Act, it is the responsibility of the manufac turer to ensure that its motor vehicles or equipment comply with applicable safety standards. The following represents our opinion based on the facts provided in your letter.

Your first question concerns the identification requirements for a master lighting switch. You stated your belief that if the headlamps and tail lamps are controlled by the master lighting switch, the switch is not required to be marked with any symbol o ther than that specified in Standard No. 101 for the master lighting switch. You also stated your belief that the manufacturer had an option to use other symbols in addition to that symbol. As discussed below, your understanding is correct.

Section S5.2.1(a) states:

Except as specified in S5.2.1(b), any hand-operated control listed in column 1 of Table 1 that has a symbol designated for it in column 3 of that table shall be identified by either the symbol designated in column 3 (or symbol substantially similar in fo rm to that shown in column 3) or the word or abbreviation shown in column 2 of that table. . . . Words or symbols in addition to the required symbol, word or abbreviation may be used at the manufacturer's discretion for the purpose of clarity. . . .

Column 3 of Table 1 designates the symbol shown In your letter for the master lighting switch. Also, footnote 2 of the table states that separate identification is not required for headlamps and tail lamps if they are controlled by a master lighting swit ch. Thus, the master lighting switch symbol is sufficient identification under Standard No. 101 for the control identified in your letter.

A drawing provided with your letter shows various positions of the master lighting switch Identified by a word or symbols, which are provided in addition to the master lighting switch symbol. As indicated in the above-quoted text, section S5.2. 1(a) perm its words or symbols in addition to the required symbol or word, for purposes of clarity.

Your second question concerns identification requirements for an upper beam control. You stated that you believe no symbol is required for the upper beam control if it is on the turn signal lever, and that it is at the manufacturer's option to use a symb ol.

Standard No. 101 does not specify any identification requirements for an upper beam control , regardless of whether it is on the turn signal lever. Thus, the manufacturer has the option of deciding whether to identify the control and, If so, how to ident ify it. We note that the symbol you plan to use for future models is the same as that designated in Standard No. 101 for the highbeam (upper beam) tell tale. Thus, your planned approach appears desirable in minimizing the number of symbols drivers must f amiliarize themselves with for the same function.

Sincerely, Erika Z. Jones Chief Counsel

Ms. Erika Jones, Chief Counsel NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION 400 Seventh Street, S.W. Washington, DC 20530

Dear Ms. Jones:

This letter serves to request an interpretation or FMVSS 101; Controls and displays.

We believe, (1) if the head lamps and tail lamps are controlled by master lighting switch, this is not required to be marked with any symbol , other than and it is the manufacturer's option to use other symbols in addition to the, as desired.

(2) When using the turn signal lever for the upper beam control, no symbol is required, and it is at the manufacturer's option to use symbol as desired.

Shown by current models in Attachment 1 are the symbols we have been using. In future models, we plan to change the symbols to those shown by future models in Attachment 1.

Please inform us in a timely manner if these symbols are acceptable and whether our interpretation is correct. If you have any questions, please contact me at (515) 353-5444.

Sincerely, Nobuyoshi Takechi Technical Manager NT/sg MMC SERVICES, INC. Attachment

ID: nht88-4.50

Open

TYPE: INTERPRETATION-NHTSA

DATE: 12/29/88

FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA

TO: DONALD SMITH -- CHIEF INVENTOR NEW INNOVATIVE SYSTEMS

TITLE: NONE

TEXT: Dear Mr. Smith:

This is in reply to your recent undated letter regarding the "Highway Automatic Communications Indicator (HACI)", as supplemented by a telephone conversation between you and Stephen Wood of my staff on December 20, 1988. You have asked for approval of y our device.

The HACI "will display, via a transparent display screen mounted in the rear window, pre-programmed distress messages, activated only when with the automobile is at a complete standstill." The diagram of the display alert indicates that the message would appear in the middle of the rear window, rather than at the bottom of the window where the lamp would be. When not activated, the device would be transparent. It would be activated by a special switch, not by the brake pedal. It is our understanding that the HACI would be activated only when the vehicle is stationary, and is not wired into the brake light or hazard light system.

The National Highway Traffic Safety Administration has no authority to approve or disapprove individual inventions or devices. We can, however, advise you as to the relationship of the HACI to the Federal motor vehicle safety standards and the National Traffic and Motor Vehicle Safety Act under the authority of which the standards are issued. These standards must be met at the time a vehicle is sold to its first purchaser, and persons other than the purchaser may not modify a vehicle after its sale in a manner that, in essence, renders it noncompliant with any standard.

There are three standards potentially affected by the HACI. The first is the lighting standard, Standard No. 108. Since the HACI's display screen is mounted in the rear window, a problem could arise if the center high mounted stop lamp required by Stan dard No. 108 is also mounted in that area. The HACI is permissible as original vehicle equipment as long as it does not impair the effectiveness of the high mounted lamp, or any other lamp required by Standard No. 108. While this determination is the r esponsibility of the vehicle manufacturer (or dealer, if the HACI is installed after vehicle manufacture but before sale to its first purchaser)

in the first instance, it appears to us that the effectiveness of the high mounted lamp would not be impaired. We base this conclusion on our understanding that the message would appear in the middle of the rear window, instead of at the bottom of the w indow where the lamp would be and that it would apparently be activated only when the vehicle was stationary, such as parked on the side of the road.

The second standard potentially affected is Standard No. 111, relating to rearview mirrors. This standard specifies a field of view to be met by the inside rearview mirror; if the mirror does not provide this field of view, an outside mirror on the fron t seat passenger side must be provided. Since your device is reportedly transparent when not activated, and would be activated only when the vehicle is stationary, it may well be that there is no necessity for the addition of an outside mirror. However , we do not have sufficient information to determine whether the HACI would impede the field of view under all conditions.

The third standard potentially affected is Standard No. 205, relating to glazing. This requires, in part, that all glazing in passenger cars have at least 70 percent light transmittance. To the extent that the display screen reduces light transmittance , it could create a noncompliance with this standard. However, because you have indicated that your display screen is transparent, it does not appear likely that any reduction in light transmittance would fall below the specified minimum.

With this guidance and your knowledge of the HACI, you should be able to judge whether installation of the HACI either before or after the initial sale of a passenger car might be regarded as creating a noncompliance with a Federal motor vehicle safety s tandard, or otherwise be in violation of the Act. An official judgment regarding noncompliance or violation is made by the agency only in the context of an enforcement proceeding.

In addition, you should be aware that the HACI remains subject to the laws of the individual States. We cannot advise you of its legality under these laws. To obtain an opinion on this matter, you may wish to consult the American Association of Motor Ve hicle Administrators, 4600 Wilson Blvd., Arlington, Va. 22203.

Sincerely,

ID: nht88-4.54

Open

TYPE: INTERPRETATION-NHTSA

DATE: 12/30/88

FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA

TO: FRANK J. TRECY -- GENERAL MANAGER - MANUFACTURING MILLER STRUCTURES, INC.

TITLE: NONE

ATTACHMT: LETTER DATED 11/14/88 FROM F. J. TRECY TO ERIKA Z. JONES, OCC 2811; LETTER DATED 10/04/88 FROM FRANK J. TRECY TO ERIKA Z. JONES

TEXT: Dear Mr. Trecy:

I am writing in response to your request for an interpretation of whether Standard No. 115; Vehicle Identification Number - Basic Requirements (49 CFR @ 571.115) would apply to your company's portable commercial use structures. In your letter to me, you stated that Miller Structures, Inc. manufactures offices, storage buildings, classrooms, laboratories, branch banks, medical clinics, and other related commercial buildings on axles. This allows the structures to be transported to the desired location by attaching them to a truck tractor and moving them over the roads. You state that a "considerable" amount of your units go to a location and are placed there permanently. You inform us that other buildings are placed on a location "for varying length s of time" and are then relocated.

In a subsequent television conversation with Dorothy Nakama of my office, you stated that the structures are not self-propelling but must be towed by a semi-trailer or truck. Some of these structures have removable running gears. You also stated that th e structures are constructed very much like mobile homes, and that the structures are intended to go on the public roads at least once, in order to get to their designated sites. You also stated that your structures are not regulated by the U.S. Departm ent of Housing and Urban Development (HUD) because they are not homes.

Standard No. 115, and all of our safety standards, apply only to vehicles that are "motor vehicles," within the meaning of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.). The term "motor vehicle" is defined at section 102(3) of the Safety Act as follows:

"Motor Vehicle" means any vehicle driven or drawn by mechanical power manufactured primarily for use on the public streets, roads, and highways, except any vehicle operated exclusively on a rail or rails.

We have interpreted this language as follows. Vehicles that are equipped with tracks or are otherwise incapable of highway travel are plainly not motor vehicles. Agricultural equipment, such as tractors, are not motor vehicles. Further, vehicles design ed and sold solely for off-road use (e.g., airport runway vehicles and underground mining vehicles) are not considered motor vehicles, even though they may be operationally capable of highway travel. Vehicles, such as mobile construction equipment, that use the public roads only to travel between job sites and which typically spend extended periods of time at a single job site are not considered motor vehicles. In such cases, the use on the public roads is merely incidental, not the primary purpose for which the vehicle was manufactured.

On the other hand, vehicles that use the public highways on a necessary and recurring basis are motor vehicles. For instance, utility vehicles like the Jeep are plainly motor vehicles, even though they are equipped with special features to permit off-ro ad operation. If a vehicle's greatest use will be off-road, but it will spend a substantial amount of time on-road, NHTSA has interpreted the vehicle to be a "motor vehicle." Further, if a vehicle is readily usable on the public roads and is in fact use d on the public roads by a substantial number of owners, NHTSA has found the vehicle to be a motor vehicle. This finding was made with respect to dune buggies and regardless of the manufacturer's stated intent regarding the terrain on which the vehicles were to be operated.

Based on the information you have provided, it appears that your mobile structures are not "motor vehicles" within the meaning of the Safety Act and, therefore, are not subject to the requirements of Standard No. 115 or any other of our safety standards. This conclusion is based on our judgment that the vehicles seem analogous to mobile construction equipment -- i.e., the on-road use of the vehicles appears to be incidental and not the primary purpose for which the vehicles are manufactured. Please no te that this conclusion is based solely on the facts presented in your letter. We may reexamine this conclusion if additional information becomes available that would warrant a reexamination.

Additionally, you should note that this interpretation applies only to Federal requirements. The individual States may establish their own identification requirements for vehicles that are not subject to the Federal identification requirements, such as your mobile structures. Thus, the State of South Dakota could establish identification requirements applicable to your mobile structures sold in that State.

I hope the information provided is useful. If you need further information on this subject, please contact Dorothy Nakama at (202) 366-2992 or write to me again.

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.

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