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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 1971 - 1980 of 2914
Interpretations Date

ID: 21419.drn

Open





    Mr. Mac Yousry
    Global Vehicle Services, Corp.
    1238 West Grove Avenue
    Orange, CA 92865



    Dear Mr. Yousry:



    This responds to your request for an interpretation of wiped or cleared areas specified in Standard No. 104, Windshield Wiping and Washing Systems. You asked two questions, which are answered below.

    Your letter concerns S4.1.2 of Standard No. 104, which establishes three windshield areas, designated as "A," "B," and "C," for passenger cars. Each area is required to have a certain percentage of the windshield area wiped as indicated in Figures 1 and 2 of SAE Recommended Practice J903a (May 1966), using the angles specified in Tables I, II, III and IV of Standard No. 104. The standard also provides that the percentage of each area required to be cleared must also be within the area bounded by a perimeter line on the glazing surface one inch from the edge of the daylight opening.

    You note that Standard No. 104 does not specify whether Areas A, B and C must fall inside the boundaries of the daylight opening of the windshield. You state that new passenger car designs may utilize smaller windshields, even though the overall width of the vehicle may not be any narrower than typical passenger cars. You believe that on such smaller windshields, parts of Areas A, B, and C may fall outside the daylight opening or even outside the area bounded by the windshield frame.

    Your first question asks "Must all of the area of windshield areas A, B and C fall inside the area of the windshield bounded by a perimeter line on the glazing surface one inch from the edge of the daylight opening?"

    The answer is no. In an interpretation letter of May 6, 1997, to Mr. Jiri Misik (copy enclosed), the National Highway Traffic Safety Administration stated that Area A is that portion of the total area bounded by the angles in Tables I through IV of Standard No. 104 that is also within a perimeter 25 mm within the daylight opening of the windshield frame. The agency noted that it is not necessary that the windshield be large enough to contain the whole area bounded by angles (of which 16 to 18 is the left border).

    Although the answer to Mr. Misik addressed only Area A, the analysis also applies to Areas B and C.

    Your second question asks:

      (a)  Should the percentage of the areas A, B and C, which must be wiped, be calculated utilizing the full areas of A, B, and C even if parts thereof are outside the daylight opening of the windshield?

      (b)  Or, should the percentages of areas A, B and C, which must be wiped, be calculated utilizing only parts of areas A, B and C that actually fall inside the area of the windshield bounded by a perimeter line on the glazing surface one inch from the edge of the daylight opening?

    As explained below, the answer to the second question is (b). In Standard No. 104, S4.1.2 states the following:

    Wiped area. When tested wet in accordance with SAE Recommended Practice J903a, May 1966, each passenger car windshield wiping system shall wipe the percentage of Areas A, B, and C of the windshield (established in accordance with S4.1.2.1) that (1) is specified in column 2 of the applicable table following subparagraph S4.1.2.1 and (2) is within the area bounded by a perimeter line on the glazing surface 25 millimeters from the edge of the daylight opening.

    The description and control of the minimum windshield area to be wiped is described at S3.1 of SAE Standard J903a (copy enclosed). S3.1.2.1 states in part:

    The minimum windshield area that shall be wiped is described by the use of three specific areas on the windshield glazing surface. The three areas are identified in Table 1 as areas A, B, and C. Each area has been established using the angles of Table 1 applied as shown in Figs. 1 and 2. In Fig. 1 (side view), the upper and lower boundary of the area is established by the intersection of two planes, tangent to the upper and lower sides of the eye range contour, with the windshield glazing surface. The planes are fixed by angles above and below the glazing surface reference line. In Fig. 2 (plan view), the left and right boundaries of the area are established by the intersection of two planes tangent to the left and right sides of the eye range contour. The planes are fixed by angles to the left and right of the plan view reference line. ...

    S3.1.2.1's description means that Areas A, B and C are not fixed, predetermined areas for all windshields, but are areas that vary from windshield to windshield. The variables are the angle of measurement and the width of the car. S4.1.2 of Standard No. 104 adds another variable by describing Areas A, B and C as within the area bounded by a perimeter line on the glazing surface 25 millimeters from the edge of the daylight opening.

    Please note that in Standard No. 104, Tables I, II, III, and IV all specify that after the test is conducted, a minimum of 80% of Area A must be wiped, a minimum of 94% of Area B must be wiped, and a minimum of 99% of Area C must be wiped.

    I hope this information is helpful. If you have any further questions, please feel free to contact Dorothy Nakama of my staff at this address or by telephone at (202) 366-2992.



    Sincerely,



    Frank Seales, Jr.
    Chief Counsel

    Enclosures

    ref:104
    d.8/11/00



2000

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: nht91-7.16

Open

DATE: November 20, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Herbert J. Lushan -- Regalite Plastics Corporation

TITLE: None

ATTACHMT: Attached to letter dated 9-17-91 from Herbert J. Jushan to Paul Jackson Rice (OCC 6505)

TEXT:

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, S103 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.

ln 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 manufactures 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 states that your company is involved with after-market glazing materials. After a vehicle is first sold to a consumer, S108 (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.

ID: aiam1048

Open
Mr. Normal E. Randall, Manager Quality Control, Joan Fabrics Corporation, 122 Western Avenue, Lowell, MA, 01853; Mr. Normal E. Randall
Manager Quality Control
Joan Fabrics Corporation
122 Western Avenue
Lowell
MA
01853;

Dear Mr. Randall: This is in reply to your letter of February 28, 1973, and an attache copy of an earlier letter dated September 26, 1972, that you sent to Mr. Bobby A. Boaz in our Office of Consumer Affairs and Public Information but was evidently never received. You ask what types of vehicles are covered by Standard No. 302, 'Flammability of Interior Materials', and especially whether campers, motor homes, and mobile homes are covered.; The standard applies to passenger cars, multipurpose passenge vehicles, trucks, and buses. It does not apply to trailers, the vehicle category which includes mobile homes and other towed recreational vehicles, but it does apply to motor homes and to those campers that are constructed on new chassis.; You ask further for any available information regarding testin procedures, requirements, reporting procedures, and any other related information. There are no reporting requirements, and otherwise the information you seek is found in Standard No. 302 itself. Accordingly, a copy of that standard, as well as a copy of a proposed amendment, are enclosed for your consideration.; Yours truly, Richard B. Dyson, Assistant Chief Counsel

ID: aiam0835

Open
Mr. Jack Bronte, President, Paradise Manufacturing Company, 2840 East 26th Street, Los Angeles, CA, 90023; Mr. Jack Bronte
President
Paradise Manufacturing Company
2840 East 26th Street
Los Angeles
CA
90023;

Dear Mr. Bronte: This is in reply to your letter of August 31, 1972, concerning Moto Vehicle Safety Standard No. 302, 'Flammability of Interior Materials.' You ask whether the Standard applies to the shower and matching window curtains you manufacture and sell to manufacturers of mobile homes, trailers, and campers, and whether mobile homes must comply with the requirements of the Standard.; Because Standard No. 302 applies to motor vehicles, the components o vehicle occupant compartments listed in S.4.1 of the Standard are subject to the Standard only when they are installed in a vehicle included under a vehicle class to which the Standard is applicable. Standard No. 302 applies to passenger cars, multipurpose passenger vehicles, trucks, and buses. It does not apply to trailers, the vehicle category which includes mobile homes and other towed recreational vehicles, but it does apply to those campers that are constructed on new chassis. Since the only vehicles you list that must meet the requirements of the Standard and that use your curtains are campers constructed on new chassis, the Standard applies only to the curtains used in such campers.; Yours truly, Richard B. Dyson, Assistant Chief Counsel

ID: aiam1928

Open
Mr. Harold D. Jones, Bock & Jones, 435 Main Street, New Madrid, MO 63869; Mr. Harold D. Jones
Bock & Jones
435 Main Street
New Madrid
MO 63869;

Dear Mr. Jones: This is in response to your letter of May 2, 1975, inquiring about th existence of regulations governing the manufacture, design, and on-the-road operation of trailers used to transport fertilizer while hitched to a pickup truck.; The National Highway Traffic Safety Administration has th responsibility of promulgating safety standards that set minimum performance requirements for vehicles manufactured and/or sold in the United States. There are five motor vehicle safety standards that apply to trailers. These standards relate to trailer lighting, tires, and braking systems (Standard No. 106-74, *Brake Hoses* (49 CFR Part 571.106), Standard No. 108, *Lamps, Reflective Devices and Associated Equipment* (49 CFR Part 571.108), Standard No. 116, *Motor Vehicle Brake Fluids* (49 CFR Part 571.116), Standard No. 119, *New Pneumatic Tires for Vehicles Other Than Passenger Cars* (49 CFR Part 571.119), Standard No. 121, *Air Brake Systems* (49 CFR Part 571.121)).; There is no safety standard that applies to the towing of a trailer The use of a safety chain to guard against release of the trailer may, however, be mandated by state law.; Yours truly, Richard B. Dyson, Assistant Chief Counsel

ID: 09-002367 111

Open

William E. Otto, Esq.

Sebring & Associates

2735 Mosside Boulevard

Monroeville, PA 15146

Dear Mr. Otto:

This responds to your inquiry dated April 15, 2009 following up on a previous letter to you from this office, concerning the outside rearview mirror requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 111, Rearview Mirrors.

In your first letter to this office, you asked about an outside drivers side rearview mirror for passenger cars. The mirror contained two parts. On the right portion of the mirror, a section of the mirror contained an FMVSS No. 111-compliant flat mirror, while the left portion of the mirror contained a curved or aspheric component. You asked whether S5.2.1 of FMVSS No. 111 permits a single drivers side mirror containing both a flat portion and a curved or aspheric portion located to the left of the flat portion.

In our January 16, 2009 letter to you, we said the answer is yes. S5.2.1 of FMVSS

No. 111 applies to the drivers side mirrors on passenger cars. It states: [e]ach passenger car shall have an outside mirror of unit magnification. That section does not prohibit an additional curved or aspheric portion to expand the field of view beyond the required viewable area. We also referred to two previous legal interpretations reiterating this point.[1]

In your current letter, you ask if a single drivers side mirror containing both a flat and curved portion would be permitted for other vehicle types under paragraphs S6, S7, S8, and S10 of FMVSS No. 111, if the flat portion alone otherwise is compliant with the applicable requirements. Our answer is that such mirrors would be permitted under the standard.

Paragraph S6 applies to multipurpose passenger vehicles (MPVs), trucks, and buses, other than school buses, with a gross vehicle weight rating (GVWR) of 4,536 kilograms (kg) (10,000 pounds) or less. The section does not contain any language that would prohibit a supplementary curved mirror portion. S6.1(b) states that the vehicle shall have either mirrors that comply with S5, or outside mirrors of unit magnification, each with not less than 126 cm2 of reflective surface, located to provide the driver a view to the rear along both sides of the vehicle. If this requirement is met, there is no specific prohibition on additional mirrored surfaces, which can be convex or aspheric or flat.[2]

S7 applies to MPVs and trucks with a GVWR of more than 4,536 kg and less than 11,340 kg and buses, other than school buses, with a GVWR of more than 4,536 kg. S8 applies to MPVs and trucks with a GVWR of 11,340 kg or more. A similar analysis indicates that paragraphs S7 and S8 do not prohibit the types of mirrors at issue. These sections of FMVSS No. 111 require that the vehicles have outside mirrors of unit magnification, each with not less than 323 cm2 of reflective surface, located to provide the driver a view to the rear along both sides of the vehicle. If this requirement is met, there is no specific prohibition on additional mirrored surfaces, which can be convex or aspheric or flat.

Paragraph S10 applies to motorcycles. S10.1 specifies motorcycles to have either a mirror of unit magnification with not less than 8065 mm2 of reflective surface, or a convex mirror with not less than 6450 mm2 of reflective surface and an average radius of curvature not less than 508 mm and not greater than 1524 mm . The portion of the mirror required by FMVSS No. 111 must be contiguous. A convex or aspheric or flat mirror may supplement the mirror required by S10.

The Federal Motor Carrier Safety Administration (FMCSA) is the agency in the U.S. Department of Transportation responsible for safety regulations concerning motor carrier operations. Among other things, FMCSAs regulations include certain requirements for commercial motor vehicle (CMV) equipment necessary for safe operations, including rear-vision mirrors. For information on FMCSAs requirements for CMV equipment, please contact FMCSA at 1-800-832-5660.

I hope this answers your questions. If you have any further questions, please contact my office at (202) 366-2992.

Sincerely,

 

O. Kevin Vincent

Chief Counsel

Dated: 6/1/2010

 


[1] In a January 15, 1995 letter to Mr. Amin Ahmadi, we stated that [v]ehicle manufacturers may install mirror systems that combine a portion of the mirror with a straight angle with a portion of the mirror that is at a slight variance, provided that the straight mirror portion by itself complies with the requirements in FMVSS No. 111 that are applicable to the vehicle on which the mirror system is installed. Similarly, in a June 22, 1998 letter to Mr. Bobby Kim, we stated that [v]ehicle manufacturers may install mirror systems that combine flat and convex mirrors on their new vehicles, provided that the flat mirror portion by itself meets FMVSS No. 111 requirements applicable to the vehicle on which the mirror system is installed. Both letters are available at http://isearch.nhtsa.gov.

[2] We note that although mixing of convex or aspheric and flat mirrors is not prohibited, mixing the mirrors could present visual confusion to the vehicle operator.

2010

ID: 17332.nhf

Open

Mr. Bud White
Honcho Products Company
3821 County Road 255-D
Henderson, TX 75652

Dear Mr. White:

This responds to your letter requesting information on regulations applicable to the sale and installation of a flatbed conversion package manufactured for small ton pick-up trucks. I apologize for the delay in my response.

You state that you plan to manufacture a 6'-6" wide, 8' long steel flatbed that is designed to replace the standard bed on a small pick-up such as the standard cab, long wheelbase models of the Chevy S-10, Ford Ranger, and Dodge Dakota pickups. According to your letter, the conversion is intended to increase the bulk level load carrying capability of the trucks without increasing the manufacturer's gross vehicle weight rating (GVWR) load capacity. You also state that you intend to offer additional accessories such as steel boxes, side rails, replacement dual steel rear wheels, overload springs/shock absorbers, and cab and bed clearance lights. You explain that you intend to import some of these components. I appreciate the opportunity to explain the National Highway Traffic Safety Administration's (NHTSA's) governing statutes and regulations to you.

We would like to begin by explaining that NHTSA is authorized to issue Federal motor vehicle safety standards that set performance requirements for new motor vehicles and items of motor vehicle equipment. NHTSA does not approve motor vehicles or motor vehicle equipment. Manufacturers are required to certify that their products conform to our safety standards before they can be offered for sale. NHTSA's certification requirements are set forth at 49 CFR Part 567.

You state that the truck bed will be offered as a replacement for existing truck beds. The statutes and regulations applicable to the installation of the conversion truck bed will differ depending on whether the truck bed is installed before or after the first retail sale of the vehicle. A business that replaced the original truck bed with the truck bed you manufacture prior to the first retail sale of the vehicle, would be considered an alterer and would be required to affix its own label identifying itself and certifying that the vehicle, as altered, continues to comply with all applicable Federal motor vehicle safety standards. See 49 CFR 567.7.

A business that replaced the original truck bed with the truck bed you manufacture after the first retail sale of the vehicle would not have not to certify that the vehicle, as converted, continues to comply with the standards. However, the business would have to comply with NHTSA's statutory make inoperative prohibition. Manufacturers, distributors, dealers, and repair businesses are prohibited from "knowingly making inoperative" any device or element of design installed on or in a motor vehicle in compliance with an applicable standard. In general, the "make inoperative" prohibition (49 U.S.C. 30122) requires businesses which modify or convert motor vehicles to ensure that they do not remove, disconnect, or degrade the performance of safety equipment installed in compliance with an applicable standard. Violations of this prohibition are punishable by civil penalties of up to $1,100 per violation.

You should be aware that the conversion could affect the truck's compliance with several of NHTSA's safety standards. For example, replacing the original truck bed with the conversion truck bed could affect the vehicle's compliance with Standard No. 301, Fuel System Integrity. This standard sets performance requirements for fuel systems in crashes to preserve the integrity of the fuel system in a crash to prevent occupant exposure to fire. As another example, the vehicle's compliance with Standard No. 108, Lamps, Reflective Devices and Associated Equipment, would be compromised if the conversion bed somehow obscured the center highmounted lamp required by the standard. Any business that installs the conversion bed must ensure that the vehicle continues to comply with all applicable safety standards. The installation of dual wheels may widen the vehicle to greater than 80 inches. Should this occur, clearance and identification lamps must be installed.

In response to your question as to whether there are any regulations that apply to steel wheels and clearance lights, Standard No. 119, New pneumatic tires for vehicles other than passenger cars, and Standard No. 120, Tire selection and rims for motor vehicles other than passenger cars, apply to dual steel rear wheels, and Standard No. 108, Lamps, Reflective Devices and Associated Equipment applies to the clearance lights. The installation of dual wheels may widen the vehicle to greater than 80 inches. Should this occur, clearance and identification lamps must be installed.

You should also be aware that manufacturers of motor vehicles and items of motor vehicle equipment are responsible for any safety-related defects in their products. If a manufacturer or NHTSA determines that a safety-related defect exists, the manufacturer must notify purchasers of the product and remedy the problem free of charge. Thus, as a manufacturer, you are responsible for notification and remedy of safety related defects or noncompliances that are discovered in the kit either before or after its installation on motor vehicles. The defect requirement applies to all motor vehicle equipment, even in the absence of a safety standard. See 49 CFR Part 577, Defect and Noncompliance Notification, 49 CFR Part 573, Defect and Noncompliance Reports, and 49 CFR Part 579, Defect and Noncompliance Responsibility.

Finally, your letter indicates that you may import some of the motor vehicle equipment for the conversion package. As a general rule, all motor vehicles and items of motor vehicle equipment must conform (and be certified by their manufacturer to conform) to all applicable Federal motor vehicle safety standards issued by this agency in order to be imported into the United States and sold here.

I hope this information is helpful. I am also enclosing a copy of a fact sheet titled "Information for New Manufacturers of Motor Vehicles and Motor Vehicle Equipment." It outlines other laws and regulations that you should be aware of. If you have any further questions about NHTSA's safety standards, please feel free to contact Nicole Fradette of my staff at this address or by telephone at (202) 366-2992.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosure
ref:VSA
d.6/30/98

1998

ID: 2105y

Open

Robert N. Levin, Esq.
Hudock & Levin
1101 Connecticut Avenue, NW
Suite 910
Washington, DC 20036

Dear Mr. Levin:

This responds to your letter on behalf of one of your clients, seeking information on how our law and agency regulations might affect the installation of sun roofs in vehicles. You stated that your client is an automobile repair facility. According to your letter, you recently discovered this agency's regulation (49 CFR /567.7) requiring vehicle alterers to affix to the vehicles they alter a label certifying that the vehicle as altered continues to comply with all applicable safety standards. You asked whether such certification labels must be affixed by your client to those vehicles on which it installs a sun roof. I am pleased to have this opportunity to explain the requirements of our laws and regulations for you.

The National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.) authorizes this agency to issue safety standards applicable to new motor vehicles and new items of motor vehicle equipment. Two of those safety standards could be relevant to a repair shop's installation of sun roofs on motor vehicles. Standard No. 205, Glazing Materials, (49 CFR /571.205) sets performance requirements for glazing materials installed in new motor vehicles and for new glazing materials for use in motor vehicles. Any glazing incorporated in a vehicle's sun roof would have to conform to the applicable performance requirements set forth in Standard No. 205. In addition, installation of a sun roof could affect a vehicle's compliance with Standard No. 216, Roof Crush Resistance - Passenger Cars, (49 CFR 571.216), which sets forth strength requirements for roofs of passenger cars.

Section 108(a)(1)(A) of the Safety Act (15 U.S.C. 1397(a)(1)(A)) specifies that, "No person shall manufacture for sale, sell, offer for sale, or introduce or deliver for introduction in interstate commerce, or import into the United States, any motor vehicle or item of motor vehicle equipment manufactured on or after the date any applicable Federal motor vehicle safety standard takes effect under this title unless it is in conformity with such standard ..." Because of this statutory requirement, any person or business that installs sun roofs in new motor vehicles must certify that the vehicle continues to comply with the requirements of all applicable safety standards, including Standards No. 205 and 216.

The form and contents for this certification are set forth in 49 CFR Part 567, Certification. Any manufacturer that installs a sun roof on a new motor vehicle is required by /567.4 or /567.5 to certify that the vehicle conforms to the requirements of all applicable safety standards. Any person or business that adds a sun roof to a previously certified new motor vehicle prior to its first sale for purposes other than resale would be required to certify the vehicle's continuing compliance with all applicable safety standards, in accordance with /567.7. Such a person or entity is an "alterer" for the purposes of Part 567. (Persons or entities that modify vehicles by using a "readily attachable component" or performing a "minor finishing operation" are not considered "alterers." Modifications involving a readily attachable component or a minor finishing operation are instead subject to the requirements of 49 CFR /567.6. However, NHTSA does not consider a sun roof to be a "readily attachable component" nor is the installation of a sun roof a "minor finishing operation." Hence, this exception is not relevant to your client's activities.).

In addition to these certification requirements, an "alterer" is considered a "manufacturer" for the purposes of the Safety Act. Among other things, this means an alterer is responsible for notification and remedy of defects related to motor vehicle safety and noncompliances with applicable Federal motor vehicle safety standards arising from the alterations, as specified in sections 151-160 of the Safety Act (15 U.S.C 1411-1420). I have enclosed a general information sheet for new manufacturers that generally describes our statutory and regulatory requirements, and explains how to obtain copies of those statutes and regulations.

The certification and labeling requirements set forth in section 114 of the Safety Act (15 U.S.C. 1403) and in Part 567 apply to vehicles only until the first sale of the vehicle for purposes other than resale. Thus, once a vehicle has been purchased by a consumer, persons that modify that vehicle for its owner (e.g., by installing a sun roof) are not required to certify or label the vehicle by this agency's statutes or regulations. A different statutory provision applies to modifications made by a repair shop to vehicles after the first purchase. Section 108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)) provides that, "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 or item of motor vehicle equipment in compliance with an applicable Federal motor vehicle safety standard, ..."

To comply with the obligations imposed by this "render inoperative" provision, your client should examine the sun roofs it installs and the means of installation for those sun roofs, and compare those with the requirements of Standards No. 205 and 216. After such an examination and comparison, your client should be able to decide if the sun roof installations it performs result in any apparent violations of the "render inoperative" provision of the Safety Act. If your client decides there is no apparent "render inoperative" violation, Federal law does not require any additional actions, such as labeling or certification, on your client's part in connection with the installation of sun roofs in vehicles after the first purchase of those vehicles. You should be aware that NHTSA may reexamine your client's decision and make its own determination of whether your client's sun roof installations may have violated the "render inoperative" provision in the Safety Act in the context of an enforcement proceeding.

I hope this information is helpful. If you have any additional questions, please feel free to contact Mr. Marvin Shaw of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Stephen P. Wood Acting Chief Counsel

Enclosures

/ref:567#205#216 d:ll/l/89

1970

ID: 9977

Open

Mr. David Ori, Manager
Bureau of Motor Vehicles
Vehicle Control Division, Room 104
T&S Building
Harrisburg, PA 17120

Dear Mr. Ori:

This responds to your letter to Mr. James Gilkey of this agency's Office of Vehicle Safety Compliance, requesting confirmation of your understanding of the applicability of Federal Motor Vehicle Safety Standard No. 205 to certain limousines. You were concerned about the permissibility of applying sun screening or window tinting to such vehicles during the original manufacturing process, and during the "second stage or alteration phase of the manufacturing process."

By way of background information, the National Highway Traffic Safety Administration (NHTSA) is authorized to issue Federal Motor Vehicle Safety Standards that set performance requirements for new motor vehicles and items of motor vehicle equipment. Under this authority, NHTSA issued Standard No. 205, "Glazing Materials," to specify performance requirements for various types of glazing and to specify the location in the vehicles in which each item of glazing may be used. One provision in Standard No. 205 requires a minimum of 70 percent light transmittance in any glazing area requisite for driving visibility. The primary purpose of this requirement is to ensure adequate visibility through the vehicle's windows, thereby reducing the risk of a motor vehicle crash.

NHTSA does not approve or certify any vehicles or items of equipment. Instead, each manufacturer is responsible for "self-certifying" that its products meet all applicable safety standards. NHTSA's certification regulations are set forth in 49 CFR Part 567. Under this regulation, each manufacturer is required to certify that its motor vehicles comply with all applicable Federal safety standards, including Standard No. 205. As you correctly state, second stage manufacturers and alterers also have certification responsibilities. Specifically, a final stage manufacturer is responsible for certifying a vehicle pursuant to 49 CFR '567.5. Accordingly, you are correct that a final stage manufacturer is

required to certify that its finished product, including the glazing materials, complies with all applicable Federal safety standards.

A person who alters a previously certified new vehicle also must certify that the altered vehicle complies with all applicable standards. 49 CFR '567.7. However, this provision does not apply to the "addition, substitution, or removal of readily attachable components ... or minor finishing operations, such as painting." NHTSA views the addition of window tint film as a "minor finishing operation." Accordingly, a person adding such tint film would not be considered an alterer and therefore would not be subject to certification responsibilities.

However, aside from certification responsibilities, pursuant to 49 U.S.C. ' 30112a, "a person may not...sell, offer for sale, [or] introduce or deliver for introduction in interstate commerce...any motor vehicle...unless the vehicle...complies with [all applicable standards]." Thus, it would be a violation of the statute to sell a new vehicle whose windows which are requisite for driving visibility had been tinted to allow less than 70 percent light transmittance.

Moreover, with respect to vehicles that are no longer new, a motor vehicle manufacturer, distributor, dealer, or 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." Thus, a person in any of these categories may not apply tint film that would cause the light transmittance of the glazing requisite for driving visibility to be under 70 percent.

You stated your belief that limousines that seat less than 10 persons may not be equipped with any sun screening or window tinting product, since such products would violate Standard No. 205. We wish to clarify one aspect of your statement. Limousines that seat less than 10 persons are considered "passenger cars" under NHTSA's regulations. NHTSA considers all windows in a passenger car to be requisite for driving visibility; accordingly, all windows in a passenger car/limousine must have a minimum 70 percent light transmittance. However, please note that tinting may be used in these vehicles, provided the tinted windows meet the minimum 70 percent light transmittance requirement.

You further asked whether a limousine that seats 10 or more persons is subject to the Federal window tinting requirements. A limousine with a capacity of more than 10 persons is considered a "bus" under our regulations. There are specific requirements in Standard No. 205 that apply to buses (or bus/limousines). Under these requirements, only the windshield and the windows to the immediate left and right of the driver are considered to be requisite for driving visibility (if they are equipped with dual outside mirrors satisfying section S6.1(b) of Standard No. 111), and thus subject to the minimum 70 percent light transmittance requirement. The windows to the rear of the driver in a bus/limousine, including the rear side and rear windows, are not required to meet the light transmittance requirement. Accordingly, Standard No. 205 does not prohibit the use of tinted glazing materials for bus/limousine windows to the rear of the driver when the vehicle is equipped with dual outside mirrors larger than those usually used on passenger cars.

I hope you find this information helpful. If you have any other questions, please contact Mr. Marvin Shaw of my staff at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

ref:205#567 d:9/7/94 The agency defines "passenger car" as a "motor vehicle with motive power, except a multipurpose passenger vehicle, motorcycle, or trailer, designed for carrying 10 persons or less." In turn, "multipurpose passenger vehicle" is defined as a "motor vehicle with motive power, except a trailer, designed to carry 10 persons or less which is constructed on a truck chassis or with special features for occasional off-road operation." A "bus" is defined as a "motor vehicle with motive power, except a trailer, designed for carrying more than 10 persons."

1994

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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