Skip to main content

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

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 9571 - 9580 of 16517
Interpretations Date

ID: 3235yy

Open

Herbert J. Lushan
Regalite Plastics Corporation
300 Needham Street
Newton Upper Falls, MA 02164

Dear Mr. Lushan:

This responds to your letter concerning the use of tinted flexible plastic glazing in certain jeep-type vehicles. You explained that a customer has asked you to manufacture a bronze-tinted clear plastic flexible window for installation in the rear side and rear windows of its vehicles. You indicated that this glazing material would not satisfy the minimum light transmittance requirement of Standard No. 205 and requested confirmation of your understanding that Standard No. 205 permits the use of such glazing for rear and side windows in these vehicles. Further, during two telephone conversations on October 29, 1991 and October 30, 1991, you informed Elizabeth Barbour of my staff that your question specifically refers to the use of this glazing on the two-door Suzuki Sidekick and the two-door Geo Tracker. You also confirmed to Ms. Barbour that the glazing materials to which your letter refers would be installed as original equipment, but added that your company is also involved with after-market products. I am pleased to have this opportunity to answer your question.

By way of background information, 103 of the National Traffic and Motor Vehicle Safety Act (Safety Act, 15 U.S.C. 1392) authorizes the National Highway Traffic Safety Administration (NHTSA) to issue safety standards for new motor vehicles and new motor vehicle equipment. NHTSA does not, however, approve or certify any vehicles or items of equipment, nor do we endorse any commercial products or processes. Instead, the Safety Act establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet all applicable safety standards. The agency periodically tests vehicles and items of equipment for compliance with the standards, and also investigates alleged safety-related defects.

Pursuant to NHTSA's authority, the agency has established Standard No. 205, which specifies performance requirements for various types of glazing (called "items"), and specifies the locations in vehicles in which each item of glazing may be used. The standard also incorporates by reference "ANSI Z26," the American National Standards Institute's Safety Code for Safety Glazing Materials for Glazing Motor Vehicles Operating on Land Highways. Among Standard No. 205's requirements are specifications for minimum levels of light transmittance, measured by Test 2 in ANSI Z26. A minimum of 70% light transmittance is required in glazing areas requisite for driving visibility, which includes all windows in passenger cars.

In trucks, buses and multipurpose passenger vehicles, only the windshield and the windows to the immediate left and right of the driver are considered requisite for driving visibility (if they are equipped with dual outside mirrors satisfying sections S6.1(b) of FMVSS No. 111) and thus, subject to the minimum light transmittance requirement. The windows to the rear of the driver in trucks, buses and multipurpose passenger vehicles, including the rear side and rear windows, are not required to meet the light transmittance requirement. Thus, Standard No. 205 permits the use of tinted glazing materials (i.e. items of glazing that are not subject to Test 2) for windows to the rear of the driver in such vehicles when they are equipped with dual outside mirrors larger than those usually used on passenger cars.

As stated above, you described the product you wish to manufacture as tinted flexible plastic, Item 7 glazing, which would be installed in the rear side and rear windows of the two-door Suzuki Sidekick and Geo Tracker. According to the agency's information about these vehicles, the rear side and rear windows are part of a removable soft-top. Standard No. 205 permits glazing used for readily removable windows in these locations to be manufactured out of flexible plastic glazing (Items 6, 7 and 13), among other types of glazing. Thus, since these specific window locations on the two-door Suzuki Sidekick and Geo Tracker are not subject to the light transmittance requirement, and since Standard No. 205 permits use of flexible plastic glazing for readily removable windows, the Standard would permit you to manufacture the bronze-tinted flexible plastic glazing for the use your customer requested.

You also stated that your company is involved with after-market glazing materials. After a vehicle is first sold to a consumer, 108 (a)(2)(A) of the Safety Act prohibits any manufacturer, dealer, distributor, or repair business from "rendering inoperative" any device or element of design installed in a vehicle in compliance with any safety standard. According to this provision, your company, for example, could install the Item 7 glazing in the rear side and rear windows of a Suzuki Sidekick or Geo Tracker after that vehicle is first sold to a consumer. This provision would, however, prohibit the after-market installation of tinted flexible plastic glazing in the front side windows of that vehicle because such installation would cause the glazing of the front side windows to no longer comply with the requirements of Standard No. 205.

The "render inoperative" provision of the Safety Act does not apply to the actions of vehicle owners themselves. No section of the Safety Act prevents vehicle owners themselves from installing any product on their vehicles, regardless of whether the installation causes the vehicle to no longer comply with Standard No. 205. The actions of individual vehicle owners may be regulated or precluded by individual States, which have the authority to regulate owner modifications and the operational use of vehicles.

I hope this information is helpful. Please contact Elizabeth Barbour of my staff at this address or by telephone at (202) 366-2992 if you have further questions.

Sincerely,

Paul Jackson Rice Chief Counsel

ref: 205 d:ll/20/9l

1970

ID: 3236o

Open

Mr. Andrew E. Woolner
General Manager
Austin Rover
U.S. Liaison Office
8953 N.W. 23 Street
Miami, Florida 33l72

Dear Mr. Woolner:

This responds to your letter requesting an interpretation of Federal Motor Vehicle Safety Standard No. l0l, Controls and Displays. You asked about the illumination requirements applicable to a trip computer display. According to your letter, the trip computer display is provided in addition to a fuel gauge and a speedometer/odometer. The trip computer is able, among other functions, to display supplemental information concerning fuel consumption, fuel used, average speed, trip distance and distance to arrival. As discussed below, this letter confirms your understanding that illumination is not required for the trip computer display, but, if illumination is provided, it is subject to the requirements of section S5.3.5 of the standard. This letter also addresses the illumination requirements applicable to a vehicle condition monitor.

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 manufacturer to ensure that its vehicles and equipment meet applicable safety standards. The following represents our opinion based on the facts provided in your letter.

Standard No. l0l requires that vehicles with any display listed in the standard must meet specified requirements for the location, identification and illumination of such display. See section S5. Among the displays listed in Standard No. l0l are the fuel level telltale, fuel level gauge, speedometer and odometer. See section S5.l and column l of Table 2.

It is our opinion that a trip computer provided in addition to a fuel gauge and speedometer/odometer is not considered a fuel level gauge, speedometer or odometer within the meaning of Standard No. l0l. Moreover, a trip computer is not otherwise included among the displays listed in the standard. Since Standard No. l0l's illumination requirements other than those of section S5.3.5 only apply to displays listed in the standard, they are not applicable to the trip computer.

As you suggest in your letter, if illumination is provided for the trip computer display, the illumination is subject to the requirements of section S5.3.5. That section specifies requirements for any source of illumination within the passenger compartment which is forward of a transverse vertical plane 4.35 inch rearward of the manikin "H" point with the driver's seat in its rearmost driving position, which is not used for the controls and displays regulated by the standard, which is not a telltale, and which is capable of being illuminated while the vehicle is in motion.

In a telephone conversation with Edward Glancy of my staff, Mr. Marx Elliott advised that you are also interested in what illumination requirements may be applicable to a vehicle condition monitor. According to the information provided with your letter, the vehicle condition monitor indicates the following: door or trunk lid not shut, low outside air temperature, lamp failure, low washer fluid, and low engine coolant.

Each of the displays included in the vehicle condition monitor is a telltale. However, none of the telltales are among the displays listed in the standard. We note that the information provided with your letter indicates that the vehicle condition monitor illustrates, using a vehicle map, the operation of several lamps. If a lamp fails, the vehicle condition monitor causes the appropriate segment in the vehicle map to extinguish. While the headlamp high beam is among the lamps for which the vehicle condition monitor provides information, Mr. Elliott has advised us that this information is supplemental to the traditional high beam telltale provided on the instrument panel. It is our opinion, based on these facts, that such a supplemental display is not considered a high beam telltale within the meaning of Standard No. l0l.

The telltales included in the vehicle condition monitor are not subject to any illumination requirements. Since none of the telltales included on the vehicle condition monitor are listed in Standard No. l0l, they need not meet the illumination requirements specified by that standard for telltales. Moreover, as indicated by the language of section S5.3.5, quoted above, the illumination requirements of that section do not apply to telltales.

Sincerely

Erika Z. Jones Chief Counsel

/ref:101 d:ll/23/88

1970

ID: 3236yy

Open

Mr. D. E. Graham
Engineering Manager
Regulatory, Test & Service
Engineering
ASC, Incorporated
One Sunroof Center
Southgate, Michigan 48195

Dear Mr. Graham:

This responds to your request for an interpretation of Federal Motor Vehicle Safety Standard No. 118 Power Windows (49 CFR 571.118). As you noted in your letter, the agency published a final rule amending Standard No. 118 in the April 16, 1991, edition of the Federal Register (56 FR 15290). You requested clarification of certain requirements in that final rule.

The agency has received several petitions for reconsideration of the final rule amending Standard No. 118. The agency is currently reviewing the merits of each petition. The agency will issue a notice in the Federal Register granting and/or denying the petitions. In that notice, the agency will also address the concerns raised in your request for an interpretation on Standard No. 118. Please let us know if you have any questions about the issues raised in your letter after our response to the petitions for reconsideration has been published and you have had the opportunity to review it.

If you need more information on this subject, please feel free to contact Dorothy Nakama of my staff at this address, or by telephone at (202) 366-2992.

Sincerely,

Paul Jackson Rice Chief Counsel

/ref:118 d:ll/20/9l

1970

ID: 3237o

Open

Mr. T. J. Brown
General Manager, Product Services
Mohawk Tire Company
l500 Indiana Avenue
P.O. Box 3250
Salem, Virginia 24l53

Dear Mr. Brown:

This responds to your letter requesting an opinion concerning Federal Motor Vehicle Safety Standard No. l09, New Pneumatic Tires. According to your letter, you are considering purchasing for resale a group of metric size tires from a foreign manufacturer. The maximum load and maximum pressures molded on the sidewalls of the tires are indicated in kilograms and kilopascals only, without any indication of the maximum pounds and PSI pressure. The actual stamping on the tires is as follows:

l65SRl5 Load Range B Maximum Load 530kgs - Maximum Pressure 230 KPA l85SRl4 Load Range B Maximum Load 600kgs - Maximum Pressure 230 KPA l75SRl4 Load Range B Maximum Load 560kgs - Maximum Pressure 230 KPA l65SRl3 Load Range B Maximum Load 475kgs - Maximum Pressure 230 KPA l55SRl3 Load Range B Maximum Load 420kgs - Maximum Pressure 220 KPA

You stated that you question whether the omission of the load designation and pressure in pounds prohibits the tires from being sold in the United States and requested our opinion on the matter. As discussed below, it is our opinion that tires without the maximum load and maximum pressures molded on the sidewalls in English units do not meet the requirements of Standard No. l09 and therefore cannot be imported into the United States for use on passenger cars.

By way of background information, the National Highway Traffic Safety Administration (NHTSA) 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 manufacturer to ensure that its motor vehicles or equipment meet applicable requirements. The following represents our opinion based on the facts provided in your letter.

All tires imported into the United States for use on passenger cars must be certified as complying with Federal Motor Vehicle Safety Standard No. l09. The standard specifies performance requirements (strength, endurance, high speed, and resistance to bead unseating), marking requirements (treadwear indicators and labeling information), and tire and rim matching information requirements which must be satisfied by each tire sold in the United States.

Section S4.2.l(b) of Standard No. l09 requires that the maximum permissible inflation pressure of each tire "shall be either 32, 36, 40 or 60 psi, or 240, 280, 300 or 340 kPa." Thus, no value other than those listed may be used for the maximum permissible inflation pressure of a passenger car tire. Sections S4.3(b) and (c) of the standard specify that each tire shall have permanently molded onto the sidewalls the maximum permissible inflation pressure and the maximum load rating for the tire.

Section S4.2.l(b) originally listed only three permissible maximum inflation pressures, all in English units (32, 36 and 40 psi). The agency interpreted sections S4.3(b) and (c) to require that the maximum permissible inflation pressure and maximum load rating be in English units, since this is the system of measurement which will be used and understood by most consumers.

The first permissible metric maximum inflation pressures, 240 and 280 kPa, were added to Standard No. l09 in l977. 42 FR 12869, March 7, l977. In permitting metric-series tires, the agency established a requirement that the metric unit inflation pressure and load rating be supplemented by English system equivalents on the tire sidewall. That requirement, set forth in section S4.3.4, now reads as follows:

S4.3.4 If the maximum inflation pressure of a tire is 240, 280, 300 or 340 kPa, then:

(a) Each marking of that inflation pressure pursuant to S4.3(b) shall be followed in parenthesis by the equivalent inflation pressure in psi, rounded to the next whole number; and

(b) Each marking of the tire's maximum load rating pursuant to S4.3(b) shall be followed in parenthesis by the equivalent load rating in pounds, rounded to the nearest whole number.

Thus, each tire must have a maximum inflation pressure of either 32 psi, 36 psi, 40 psi, 60 psi, 240 kPa, 280 kPa, 300 or 340 kPa. If the maximum inflation pressure is 32 psi, 36 psi, 40 psi, or 60 psi, the maximum permissible inflation pressure and maximum load rating provided pursuant to sections S4.3(b) and (c) must be in English units. I would note that so long as the information appears in English units, there is no reason that it cannot also be expressed in equivalent metric units, if the presentation of the additional information does not cause confusion about the required information. If the maximum permissible inflation pressure is 240 kPa, 280 kPa, 300 or 340 kPa, the maximum permissible inflation pressure in kPa provided pursuant to section S4.3(b) must be followed in parenthesis by the equivalent inflation pressure in psi, rounded to the next higher whole number, and the maximum load rating provided pursuant to section S4.3(c) in kilograms must be followed in parenthesis by the equivalent load rating in pounds, rounded to the nearest whole number.

Since the tires you are considering purchasing do not have the maximum load and maximum pressures molded on the sidewalls in English units, they do not meet the requirements of Standard No. l09 and may not be imported into the United States for use on passenger cars. I have also enclosed for your information a copy of a December l2, l985, letter, addressed to Mutual Trading Corporation, which provides a general discussion of issues related to the importation and sale of tires in the United Sates.

Sincerely,

Erika Z. Jones Chief Counsel

Enclosures

/ref:109 d:ll/23/88

1970

ID: 3237yy

Open

Mr. William J. Lewandoski
National Accounts Manager
Wheels/RV Products
Kelsey Parts Business
38481 Huron River Drive
Romulus, MI 48174

Dear Mr. Lewandoski:

This responds to your letter of July 9, l99l, to Robert Hellmuth of this agency, regarding an apparent conflict between an interpretation furnished you by this Office on May 23 of this year, and a Memorandum of the California Highway Patrol (CHP) dated May 30, 1991. The subject is whether the Tekonsha Voyager and Commander electronic brake controls ("the Brake Control") are permitted under Motor Vehicle Safety Standard No. 108.

The Brake Control incorporates a "manual override" slide bar that activates the trailer brakes without a corresponding activation of the trailer stop lamps. On May 23, we responded to your question whether activation of "the trailer brakes and non-activation of the tow vehicle/trailer stop lamps comply" with Standard No. 108. We informed you that Standard No. l08 does not so permit, and that, because the Brake Control "applies the service brakes to diminish vehicle speed," the stop lamps are required by Standard No. 108 to be activated.

However, on May 30, CHP issued Management Memorandum No. 91-80 stating that this agency had issued a ruling that the Brake Control was "legal" under the preemption authority of l5 U.S.C. 1392(d), and that CHP personnel should consider the device to be in compliance with State requirements. You have asked for a clarification of the apparent conflict between our May 23, 1991 interpretation and the CHP memorandum.

The Patrol informs us that its Memorandum was based upon an interpretation that this office furnished on September 10, l990, to Lawrence F. Henneberger. Describing the Tekonsha Commander as a device which would allow the driver of a tractor-trailer combination "to use the hand control to override the trailer brakes in an emergency mode to control swaying," Mr. Henneberger had stated last year that California had taken the position that the vehicle's stop lamps must be activated when the Brake Control is used, "even though the service brakes are not applied at the time." It appeared to us from Mr. Henneberger's statements that the purpose of the Brake Control was "to control trailer sway and not 'to stop or diminish speed by braking.'" The basis for California's position was its interpretation of Section 24603(f) of the California Vehicle Code which states, in pertinent part, that stoplamps shall be activated upon application of the hand control head for electric brakes. We responded to Mr. Henneberger in our September 1990 letter that the California requirement conflicted with the requirement in Standard No. l08 that stop lamps be activated upon application of the service brakes, and that therefore, under the preemption clause of l5 U.S.C. 1392(d), Section 24603(f) was preempted "to the extent that it may be read as requiring stop lamps to be activated on motor vehicles equipped with the Commander Electronic Brake Control, when the Control is hand activated in an emergency mode to provide sway control."

We have reviewed the interpretations of September 10, 1990, and May 23, l991, as you have requested, and we have concluded that our interpretation letter to Mr. Henneberger was in error. Although Mr. Henneberger informed us that the Brake Control "does not involve application of the vehicle's service brakes" (Henneberger letter, June 22, l990, page 2; there are also three similar representations on page 4), the Tekonsha product literature that you supplied us clearly states that "The Voyager will not apply the trailer brakes unless the manual override slide bar is applied." (Item 5 under "Important Facts to Remember"), demonstrating that application of the Brake Control results in application of the trailer's service brakes. We have talked with Sergeant Cox of the California Highway Patrol about the operation of the Brake Control. We understand that operation of the Brake Control sends an electric impulse to the trailer brakes without going through the main tractor/trailer brake actuation system. The activation of the trailer brakes without a simultaneous activation of the tractor brakes allows the tractor to proceed with undiminished speed in order to take the slack out of the connector by increasing the distance between it and the trailer, which has slowed due to the activity of the electronic brake control, and thereby reduce the sway of the trailer.

This information about the Brake Control is the basis for our reconsideration of the interpretation of September 10, 1990. Although use of the Brake Control does not involve application of the "vehicle's service brakes" through the service brake control, it nevertheless does "apply the trailer brakes" as that phrase is used by Tekonsha in its product literature. Although the immediate intent of the driver may be to control sway, that intent is realized by creating a differential in speeds between towing and towed vehicles. That differential is created, not by increasing the speed of the towing vehicle, but by diminishing the speed of the towed vehicle through braking. As we noted in the September l0 letter, a stop lamp is defined in part as a lamp that indicates the intent of the driver to diminish speed by braking. We therefore find that Standard No. l08 and 15 U.S.C. 1392(d) do not preempt Section 24603(f) of the California Vehicle Code. We confirm our interpretation of May 23, that installation of the Tekonsha systems, under the conditions and by the persons therein described, appear to violate Standard No. 108 and the National Traffic and Motor Vehicle Safety Device.

Our letters to both you and Mr. Henneberger may have left the impression that operation of the Brake Control on the brakes of the towed vehicle also requires activation of the stop lamps of the towing vehicle. Sgt. Cox has clarified that the Brake Control activates only the brakes of the towed vehicle, not the towing one. Consequently, Standard No. l08 would not require activation of the towing vehicle's stop lamps when the Brake Control alone is used to apply the brakes of the towed vehicle to diminish sway.

A copy of this letter is being provided the Department of California Highway Patrol, and Lawrence Henneberger, attorney for Tekonsha.

Sincerely,

Paul Jackson Rice Chief Counsel

cc: Lawrence F. Henneberger, Esq. Sgt. Larry Cox, CHP

/ref:l08#VSA d:ll/22/9l

1970

ID: 3238o

Open

Mr. Garry Gallagher
Vice President
Metzeler Motorcycle Tire
4520 107th SW
Everett, WA 98204

Dear Mr. Gallagher:

This responds to your letter seeking an interpretation of Standard No. 119, New Pneumatic Tires for Motor Vehicles Other Than Passenger Cars (49 CFR /571.119). More specifically, you asked whether the letter "B" must appear as part of the size designation of a motorcycle tire if that tire is of bias belted construction. The answer to your question is no.

As you noted in your letter, section S6.5 of Standard No. 119 sets forth the marking requirements for tires used on motor vehicles other than passenger cars, including tires for use on motorcycles. Subsection S6.5(c) states that each such tire shall be marked with "The tire size designation as listed in the documents and publications designated in S5.1." Section S5.1, in turn, specifies tire and rim matching information that must be provided to the public. Generally speaking, the size designation of a tire shows only the physical dimensions of that tire, not necessarily its construction. Thus, the common meaning of the term "size designation" does not necessarily include an indication of the tire's construction type. Further, no provision of Standard No. 119 requires a tire's size designation to indicate the tire's construction type. The only reference in section S6.5 of Standard No. 119 to a tire's construction type is in subsection S6.5(i), which requires the word "radial" to appear on the tire's sidewall if the tire is of radial construction. Therefore, in response to your question, Standard No. 119 does not require the letter "B" to be included in the size designation of bias belted motorcycle tires.

You noted that your company sometimes adds the letter "B" to the size designation of these tires as an internal code. NHTSA has long said that manufacturers are free to include additional information on the sidewall of their tires, provided that the additional information does not obscure or confuse the meaning of the required information, or otherwise defeat the purpose of the required information. In this case, the addition of the letter "B" to the size designation would not appear to confuse or obscure the meaning of the size designation. Hence, there would be no apparent violation of Standard No. 119 by including the letter "B" in the size designation of bias belted motorcycle tires.

If you have any further questions or need additional information on this subject, please feel free to contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Erika Z. Jones Chief Counsel

/ref:119 d:l2/l/88

1970

ID: 3238yy

Open

Mr. Darrell E. Lischynski, P.Eng.
Project Manager, Energy and Processing
Prairie Agricultural Machinery Institute
P.O. Box 1150
Humboldt, Saskatchewan S0K 2A0
Canada

Dear Mr. Lischynski:

This responds to your letter of October 3, 1991 concerning Calmar Industries' Seat Lift Kit for Ford Supercab trucks. As described by you, the "Seat Lift Kit is an attachment to raise the rear bench seat in Ford Supercab trucks. The kit does not alter the factory seat, and uses the factory seat belts. However, the seat mounts are changed, and an extension is provided to raise the seat belt attachment point." You asked which safety standards this kit must meet.

The National Highway Traffic Safety Administration has issued one safety standard that applies to seats, Standard No. 207, Seating Systems, and the following safety standards that apply to safety belts: Standard No. 208, Occupant Crash Protection, Standard No. 209, Seat Belt Assemblies, and Standard No. 210, Seat Belt Assembly Anchorages. All safety belts sold in the United States must be certified as complying with Standard No. 209, regardless of whether the belts are installed as original equipment in a motor vehicle or sold as a replacement part. However, since you indicate that the kit uses the factory-installed safety belts, it does not appear that you need to be concerned with this standard.

Since Standard No. 207, Standard No. 208 and Standard No. 210 apply only to new vehicles, they are called vehicle standards. The National Traffic and Motor Vehicle Safety Act specifies that vehicles must conform with all applicable safety standards up until the first purchase for purposes other than resale. Therefore, if the seat lift kit is installed in a truck before its sale to its first purchaser, the vehicle with the lift kit installed must conform to these standards.

After the first purchase, the vehicle is no longer required by Federal law to conform with all safety standards. However, section 108(a)(2)(A) of the Safety Act provides as follows:

No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative, in whole or part, any device or element of design installed on or in a motor vehicle or item of motor vehicle equipment in compliance with an applicable Federal motor vehicle safety standard . . . .

In order to avoid violating this provision, a manufacturer, dealer, distributor, or repair business which installed the lift kit would need to ensure, by carefully comparing the lift kit and its planned installation with the requirements of relevant safety standards, that such installation enables the vehicle to continue to comply with all applicable safety standards. Violations of 108(a)(2)(A) are punishable by civil fines of up to $1,000 per violation. I note that section 108(a)(2)(A) does not affect modifications made by vehicle owners to their own vehicles.

I hope you find this information helpful. If you have further questions, please contact Mary Versailles of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Paul Jackson Rice Chief Counsel

/ref:VSA#207#208#209#210 d:l2/4/9l

2009

ID: 3239yy

Open

Mr. Michael E. Kastner
Director of Government Relations
National Truck Equipment Association
1350 New York Avenue NW, Suite 800
Washington, DC 20005-4797

Dear Mr. Kastner:

This responds to your letter of September 4, 1991, asking whether an altered vehicle label must be added under the following circumstances:

An NTEA member receives a truck which is certified as a completed vehicle. This vehicle has not yet been titled or registered for use in any state. The NTEA member then installs a piece of equipment. This piece of equipment would not be considered readily attachable, nor would this equipment modify the completed vehicle's weight ratings. Both the completed truck manufacturer and the equipment manufacturer have stated that installation of this equipment would not affect compliance with any federal motor vehicle safety standard.

If the modification you describe is performed prior to the first purchase in good faith of the vehicle for purposes other than resale, the answer to your question is yes. A person is considered an alterer if (1) they alter the vehicle in any manner "other than by the addition, substitution, or removal of readily attachable components ... or minor finishing operations," or (2) they alter "the vehicle is such a manner that its stated weight ratings are no longer valid." Since the conditions you describe involve equipment which is not readily attachable, the NTEA member would be considered an alterer.

If considered an alterer, the NTEA member would be subject to the certification requirements of 49 CFR 567.7. These requirements include provisions that the alterer supplement the existing manufacturer certification label, which must remain on the vehicle, by affixing an additional label. The label must state that the vehicle as altered conforms to all applicable Federal motor vehicle safety standards. The label would also state the alterer and the month and the year in which the alterations were completed.

If the modification you describe is performed after the first purchase in good faith of the vehicle for purposes other than resale, the NTEA member would not be considered an alterer and an alteration label would not have to be attached. Under these conditions, the only provision in Federal law that affects the vehicle's continuing compliance with applicable safety standards is set forth in section 108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)). That section provides:

No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative, in whole or in part, any device or element of design installed on or in a motor vehicle ... in compliance with an applicable Federal motor vehicle safety standard.

In general, this "render inoperative" provision would require any of these named entities to ensure that any additional equipment installed in a vehicle would not negatively affect the compliance of any component or design on the vehicle with applicable safety standards. Violations of 108(a)(2)(A) are punishable by civil fines up to $1,000 per violation.

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

Sincerely,

Paul Jackson Rice Chief Counsel /ref:VSA#567 d:12/6/9l

2009

ID: 3240yy

Open

Mr. Floyd J. Barkman
Vice President Sales & Marketing
Collins Bus Corporation
P.O. Box 2946
Hutchinson, KS 67504-2946

Dear Mr. Barkman:

This responds to your letter of October 16, 1991, to Ms. Susan Schruth of the Urban Mass Transportation Administration. Because your questions concern a final rule issued by the National Highway Traffic Safety Administration (NHTSA), Ms. Schruth has referred your letter to our office for response. Your questions are as follows.

1. Based on a final ruling that went into effect September 1, 1991, all MPV and/or buses with a gross vehicle weight less than 10,000 pounds are required to have Type 1 or Type 2 occupant restraints at all seated positions. Also, all outboard occupants or passengers are required to have three point shoulder harness. We also understand school buses are exempt from the outboard shoulder harness. Are these statements correct and are there any exceptions to these rulings?

Your understanding of the September 1, 1991, final rule is correct. The only exception to these requirements is that the rear-seat lap/shoulder belt requirement does not apply to rear outboard seating positions located adjacent to a walkway located between the seat and the side of the vehicle to allow access to more rearward seating positions. I am enclosing a copy of the Federal Register notice for this final rule. A discussion of this exception is found on page 46258. A discussion of the agency's rationale for excluding small school buses from the rear-seat lap/shoulder belt requirement is found on page 46260 of the same notice.

2. We build under 10,000 GVW buses for the day care industry that use school bus interiors with school bus safety seats and lap belts at all locations. The exterior of the bus is commercial. Would these buses require the outboard shoulder harness?

The answer to this question depends on whether these vehicles are classified as school buses. Under NHTSA's certification requirements (49 CFR Part 567), a vehicle's type is determined using the definitions set out in 49 CFR 571.3. A school bus is defined as a motor vehicle designed for carrying 11 or more persons, including a driver, to and from school or school-related events. A program for pre-primary age children is considered a school if the program is primarily educational rather than custodial in nature. If your vehicle is a not a school bus, it must comply with the rear-seat lap/shoulder belt requirement. If the vehicle is a school bus, it does not have to comply with this requirement.

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

Sincerely,

Paul Jackson Rice Chief Counsel

Enclosure /ref:208 d:12/6/9l

2009

ID: 3241yy

Open

John C. Buonora
Director
The City of New York
Police Department
Motor Transport Division
53-15 58th Street
Woodside, NY 11377

Dear Mr. Buonora:

This responds to your letter of November 1, 1991, "regarding the removal of the operating handle for the reclining mechanism of the 1991 Chevrolet police car split bench seat." You asked for "a written determination stating whether or not the removal of the operating handle violates the seat safety standard and any possible NYPD legal liability in the event of an accident." I am pleased to have this opportunity to explain the requirements of Federal law for you.

The National Traffic and Motor Vehicle Safety Act (Safety Act) authorizes this agency to issue safety standards for new motor vehicles and new items of motor vehicle equipment. The Safety Act requires manufacturers to certify that each of their new vehicles or new items of equipment complies with all applicable safety standards at the time the product is delivered to the first purchaser in good faith for purposes other than resale.

After a vehicle is delivered to the first purchaser for purposes other than resale, modifications to the vehicle are affected by section 108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)). That section prohibits any manufacturer, dealer, distributor, or repair business from "rendering inoperative" any device or element of design installed in a vehicle in compliance with a safety standard. Therefore, if a business in any of the aforementioned categories removed the reclining mechanism operating handle, it would need to ensure that the vehicle continued to comply with all applicable safety standards following the removal.

Please note that section 108(a)(2)(A) does not affect modifications made by vehicle owners to their own vehicles. Therefore, the City of New York Police Department may itself remove the operating handle for the seat reclining mechanism on vehicles it owns without violating the "render inoperative" provision or any other provisions of the Safety Act, even if such removal did result in the vehicle no longer complying with all applicable safety standards.

However, the individual States have the authority to regulate the modifications that owners can make to their own vehicles. You should contact the State of New York to learn if it has enacted any laws or regulations that apply to your planned modification. In addition, since legal liability is a matter of state law, you may wish to consult with an attorney familiar with the law in the State of New York regarding potential liability.

I hope you find this information helpful. If you have further questions, please contact Mary Versailles of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Paul Jackson Rice Chief Counsel /ref:VSA d:12/3/9l

2009

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.

Go to top of page