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
| Interpretations | Date |
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ID: aiam0191OpenMr. J. C. Eckhold, Automotive Safety Director, Ford Motor Company, The American Road, Dearborn, MI 48121; Mr. J. C. Eckhold Automotive Safety Director Ford Motor Company The American Road Dearborn MI 48121; >>>Re: Consumer Information<<< Dear Mr. Eckhold: This is in response to your telegram of December 15 concerning th submission of consumer information on passenger cars produced by your associated company in England. You stated, 'This data will be submitted to the Bureau thirty (30) or more days in advance of any of these cars being offered for sale in the United States as required by section 375.6 as published on October 22, 1969.'; The regulation (49 CFR S 375.6(b))requires information to be mad available to prospective purchasers, on or after January 1, 1970, on 'each of the vehicles offered for sale' at the dealer showroom. The general applicability of the information is to vehicles manufactured on or after January 1, 1970. The intent of the regulation is to provide prospective vehicle buyers with information on all the various types of vehicles currently being manufactured and available for purchase after that date.; You apparently are assuming that, within the meaning of the regulation no vehicles are 'offered for sale' to prospective purchasers except those that are physically present in the dealer showroom. This certainly does not reflect the practice of most manufacturers, whose dealers, while keeping a representative stock of vehicles on hand, offer for sale (and enter into contracts for sale of) the manufacturer's complete line of vehicles. This interpretation would, furthermore, tend to defeat the main reason for providing information to prospective purchasers, since a dealer would never be obligated to provide information on vehicles other than those that happened to be in his possession at a given moment.; We advise you, therefore, that the term 'vehicles offered for sale' i the prospective purchaser requirement, 49 CFR S 375.6(b), refers to all the types of vehicles that a manufacturer represents, or the dealer represents with the permission of the manufacturer, as being available for purchase by the general public at a particular dealer location. The regulation requires that consumer information be provided to prospective purchasers on each of there (sic) vehicles on or after January 1, 1970, and to the Administrator 30 days in advance of its availability to prospective purchasers.; Sincerely, Lawrence R. Schneider, Acting Assistant Chief Counsel fo Regulations; |
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ID: aiam3031OpenMr. Moe Pare, Jr., Director of Design, Cars & Concepts, Inc., 12500 E. Grand River, Brighton, MI 48116; Mr. Moe Pare Jr. Director of Design Cars & Concepts Inc. 12500 E. Grand River Brighton MI 48116; Dear Mr. Pare: This responds to your May 21, 1979, letter concerning the markin requirements for vehicle windshields having shade bands. You asked whether the 'A S1' marking symbol required by Safety Standard No. 205, *Glazing Materials*, can be placed on the tint band itself rather than on the glazing material below the band, if the tint band is a flexible sheet applied on top of the glazing.; Safety Standard No. 205 incorporates by reference the American Nationa Standard 'Safety Code for Safety Glazing Materials', ANS Z26. The ANS Z26 standard requires special additional markings for glazing that has shade bands or tinted areas:; >>>'Glazing materials, which in a single sheet of material, ar intentionally made with an area having a luminous transmittance of not less than 70 percent (Test NO. 2), adjoining an area which has less than 70-percent luminous transmittance, shall be permanently marked at the edge of the sheet to show the limits of the area which is intended to comply with Test No. 2. The markings shall be A S1 or A S2, etc., the direction of the arrow indicating the portion of the material which complies with Test No. 2 and the number indicating the item with which that portion of the sheet complies ....'<<<; You will note from the quoted portion of this specification that th special marking is only required if the tinted shade band area of the windshield has a luminous transmittance of less than 70 percent. Your letter states that the transparent windshield tint band that you intend to use allows 70 percent light transmission. Therefore, you would not be required to use the 'A S1' special marking either on the band itself or on the glazing.; For removable tint bands of this type that do not have a 70 percen light transmission, however, the agency would permit the 'A S1' marking to be on the tint band itself rather than on the underlying glazing, provided the marking is located at the lowest possible portion of the tint band.; Sincerely, Frank Berndt, Chief Counsel |
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ID: aiam5021OpenMr. Hal Balzak 28025 N. Sarabande Lane #1216 Canyon Country, CA 91351; Mr. Hal Balzak 28025 N. Sarabande Lane #1216 Canyon Country CA 91351; "Dear Mr. Balzak: This responds to your letter concerning Federal Moto Vehicle Safety Standard No. 201, Occupant Protection in Interior Impact. I apologize for the delay in our response. You stated that you have received a copy of this standard and would like clarification of two issues. Your questions are addressed below. Your first question asked whether Standard No. 201 applied to passenger cars manufactured between January 1, 1968 and September 1, 1981. The answer to this question is yes, the standard applied to all passenger cars manufactured on or after January 1, 1968. Your second question asked whether Standard No. 201 applies to instrument panels manufactured for replacement of damaged units. The answer to this question is that, by its own terms, Standard No. 201 applies only to new motor vehicles. This means that the standard applies to original equipment components, including instrument panels, but not to replacements for those components. However, you should be aware of an important provision in Federal law. Section 108(a)(2)(A) of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1397(a)(2)(A)) provides that '(n)o 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. . . .' This provision applies to both new and used vehicles. You specifically asked about the replacement of damaged instrument panels. I note that the Safety Act does not require a manufacturer, distributor, dealer or repair business to return a vehicle to compliance with a standard if a device or element of design has been 'rendered inoperative' by another agent, such as a crash. The prohibition of section 108(a)(2)(A) does not apply to individual owners who alter their own vehicles. Thus, individual owners may install any item of motor vehicle equipment regardless of its effect on compliance with Federal motor vehicle safety standards. However, NHTSA encourages vehicle owners not to tamper with the safety equipment installed on their vehicles. I hope this information is helpful. If you have further questions, please feel free to contact Edward Glancy of my staff at (202) 366-2992. Sincerely, Paul Jackson Rice Chief Counsel"; |
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ID: aiam4156OpenMr. Rudy Valdez, Product Manager, Mr. Gasket Company, 19914 South Via Baron St., Compton, CA 90220; Mr. Rudy Valdez Product Manager Mr. Gasket Company 19914 South Via Baron St. Compton CA 90220; Dear Mr. Valdez: This is in reply to your letter of May 1, 1986, with reference t Federal Motor Vehicle Safety Standard No. 108 *Lamps, Reflective Devices, and Associated Equipment*.; Your first question concerns the liability of an aftermarket splas guard installed behind the rear wheels which would incorporate a decorative light, the illustration you enclose shows the word 'Ford' illuminated. Although the lighting equipment that is required by Standard No. 108 must be located on a rigid part of the vehicle, there is no such requirement for aftermarket equipment such as the device that you propose. If an item of aftermarket equipment is installed before the sale of a new vehicle to its first owner, such an item is permissible under Standard No. 108 provided that it does not impair the effectiveness of the required lighting equipment, but no matter when it is installed, it would be subject to regulation by any State in which a vehicle so equipped is registered or operated. We are not familiar with State laws on this subject, and recommend that you contact the Department of Motor Vehicles in States where you intend to sell your device.; Your second question asks for information on the new center hig mounted stop lamp, saying that you have seen some that do not appear to meet Federal requirements. You ask whether we will require retrofitting of vehicles. The new lamp was optional for passenger cars manufactured on or after August 1, 1984, and mandatory for those manufactured on or after September 1, 1985. The coverage of Standard No. 108 also extends to aftermarket items that are manufactured to replace original equipment center high mounted stop lamps, but there are no Federal requirements for lamps intended for use on cars that were not originally manufactured with them. We encourage manufacturers to meet the Federal specifications as closely as possible, however, and I enclose a copy of the regulation for your information. We have no authority to require retrofitting of vehicles.; I hope that this answers your questions. Sincerely, Erika Z. Jones, Chief Counsel |
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ID: aiam0190OpenMr. J. C. Eckhold, Automotive Safety Director, Ford Motor Company, The American Road, Dearborn, MI 48121; Mr. J. C. Eckhold Automotive Safety Director Ford Motor Company The American Road Dearborn MI 48121; >>>Re: Consumer Information<<< Dear Mr. Eckhold: This is in response to your telegram of December 15 concerning th submission of consumer information on passenger cars produced by your associated company in England. You stated, 'This data will be submitted to the Bureau thirty (30) or more days in advance of any of these cars being offered for sale in the United States as required by section 375.6 as published on October 22, 1969.'; The regulation (49 CFR S 375.6(b))requires information to be mad available to prospective purchasers, on or after January 1, 1970, on 'each of the vehicles offered for sale' at the dealer showroom. The general applicability of the information is to vehicles manufactured on or after January 1, 1970. The intent of the regulation is to provide prospective vehicle buyers with information on all the various types of vehicles currently being manufactured and available for purchase after that date.; You apparently are assuming that, within the meaning of the regulation no vehicles are 'offered for sale' to prospective purchasers except those that are physically present in the dealer showroom. This certainly does not reflect the practice of most manufacturers, whose dealers, while keeping a representative stock of vehicles on hand, offer for sale (and enter into contracts for sale of) the manufacturer's complete line of vehicles. This interpretation would, furthermore, tend to defeat the main reason for providing information to prospective purchasers, since a dealer would never be obligated to provide information on vehicles other than those that happened to be in his possession at a given moment.; We advise you, therefore, that the term 'vehicles offered for sale' i the prospective purchaser requirement, 49 CFR S 375.6(b), refers to all the types of vehicles that a manufacturer represents, or the dealer represents with the permission of the manufacturer, as being available for purchase by the general public at a particular dealer location. The regulation requires that consumer information be provided to prospective purchasers on each of there (sic) vehicles on or after January 1, 1970, and to the Administrator 30 days in advance of its availability to prospective purchasers.; Sincerely, Lawrence R. Schneider, Acting Assistant Chief Counsel fo Regulations; |
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ID: 86-4.13OpenTYPE: INTERPRETATION-NHTSA DATE: 07/15/86 FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA TO: JAMES J. DABROWSKI -- REGULATIONS STATISTICS COORDINATOR JAGUAR CARS TITLE: NONE ATTACHMT: LETTER DATED 06/12/86, TO ERIKA Z. JONES, FROM JAMES J. DABROWSKI, OCC - 0838; RECALL LETTER TO GRAY MARKET VEHICLE OWNERS FROM JAGUAR CARS INC AND RELEASE DOC, DATED 06/12/86 EST TEXT: Dear Mr. Dabrowski: This is in reply to your letter of June 12, 1986, asking for confirmation that "Jaguar Cars is not bound by normal NHTSA recall procedures" with reference to cars imported through the Gray Market. The National Traffic and Motor Vehicle Safety Act requires that a manufacturer must provide notification and remedy, when the determines that a vehicle or an item of motor vehicle equipment "manufactured by him" contains a safety related defact or noncompliance with an applicable standard. (15 U.S.C. 1411). A "manufacturer" is defined under the Act as "any person engaged in the manufacturing or assembling of motor vehicles..., including any person importing motor vehicles... for resale." (15 USC 1391(5)). We understand Jaguar Cars, Inc. to be a corporation incorporated in the United States for the purpose of importing and selling motor vehicles that are made in another country by another legal entity. Because it does not manufacture or assemble motor vehicles, Jaguar Cars, Inc., is responsible as a "manufacturer" for notification and remedy only for the motor vehicles that it has imported. I hope that this clarifies the matter for you. Sincerely, |
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ID: 1984-2.45OpenTYPE: INTERPRETATION-NHTSA DATE: 08/03/84 FROM: AUTHOR UNAVAILABLE; Frank Berndt; NHTSA TO: Deane; Snowdon; Shutler & Gherardi TITLE: FMVSS INTERPRETATION TEXT:
John Russell Deane III Deane, Snowdon, Shutler & Gherardi 1607 New Hampshire Avenue, N.W. Washington, D.C. 20009
Dear Mr. Deane:
This responds to your letter of May 15, 1984, to Stephen Oesch of my staff, concerning Standard No. 205, Glazing Materials. The following discussion addresses the agency's interpretation of the standard that you discussed with Mr. Oesch and the question concerning the luminous transmittance requirements in passenger cars that you raised in your letter.
You are correct that the standard regulates the glazing installed in motor vehicles and that the agency has stated that window coverings, such as solar tinting film, are not glazing for the purposes of the standard. You are also correct that the anti-tampering requirement of section 108(a)(2)(A) preclude the installation of window coverings by certain individuals, if the installation would render inoperative the glazing materials compliance with Standard No. 205. Finally, you are correct that the luminous transmittance requirements of Standard No. 205 do not apply to windows behind the driver in buses, multipurpose passenger vehicles (MPV's) and trucks when those windows are not requisite for driving visibility. The issue of whether Standard No. 205 would preempt a State standard on window covering must be addressed on a case-by-case basis. As a general matter, Standard No. 205 would not preempt State laws on window covering unless those laws appear to authorize the installation of window coverings on a new vehicle prior to its first sale and the installation of the window covering would mean that the vehicle's glazing no longer complies with Standard. No. 205. As to the abrasion resistance requirements of Standard No. 205, while you are correct that they do not directly apply to window coverings, the installation of a window covering on a vehicle may render inoperative the glazing's compliance with the abrasion resistance requirements of the standard.
Finally, you requested information concerning the luminous transmittance requirements for passenger cars. Subsequent to your meeting, Mr. Oesch provided you with the agency's interpretation letter of February 15, 1974, concerning windows in a passenger car which are requisite for driving visibility. The reason that the agency distinguishes between the luminous transmittance requirements for passenger cars and those for buses, MPV's and trucks is due to the differing rearward visibility requirements set in Standard No. 111, Rearview Mirrors for those different types of vehicles. Standard No. 111 requires all passenger cars to have an inside rearview mirror, so it is necessary to ensure that the rear window of a passenger car has sufficient luminous transmittance to allow the driver to use the rearview mirror. Unlike MPV's, buses and trucks, passenger cars are not required to have an outside rearview mirror on the passenger's side. Therefore, the agency believes that the side windows to the rear of the driver of a passenger car must have sufficient luminous transmittance to allow the driver to have an adequate view through those windows to the rear of the car. If you have any further questions, please let me know. Sincerely,
Frank Berndt Chief Counsel
Mr. Stephen L. Oesch Chief Counsel General Law Division National Highway Traffic Safety Administration Room 5219 400 Seventh Street, Southwest Washington, D. C. 20590
Dear Mr. Oesch:
Thank you for taking the time to meet with me on Thursday, May 10, 1984 to discuss certain interpretations of FMVSS 205. As I mentioned during our meeting, I represent the Specialty Equipment Market Association (SEMA) which numbers among its members most of the manufacturers of various decorative window coverings. We have for some time attempted to develop objectively stated standards for use by the states in their regulation of these products. One of our manufacturer's major problems is the lack of uniformity in the state standards. We were successful in having the VESC adopt a model standard and have attempted to have that standard enacted by law or regulation in as many states as possible.
We are concerned that certain problems regarding state standards may have been exacerbated by certain correspondence between the National Highway Traffic Safety Administration (NHTSA) and various state authorities. Specifically, this correspondence includes the letters from Hugh Oates to Paul J. Phillipson, dated February 17, 1983 and from Frank Berndt to B. E. Diehl, dated December 20, 1983. While the message conveyed by those letters may have been misinterpreted, I believe that SEMA and your office agree on the current interpretation of FMVSS 205, except in one regard. First, FMVSS 205 covers within its scope window glazing which is installed in various vehicles and does not regulate the use of various window coverings. It is clear, however, that the antitampering provisions of the law would preclude the use of various materials by certain individuals, if the use of such materials would render inoperative the safety standard in question. Second, in its present form, FMVSS 205 is not preemptive of state laws which seek to deal with window covering products since the federal standard does not deal with such products. Third, FMVSS 205 does not impose the abrasion test on window covering materials. This is the case inasmuch as the standard does not apply to such window covering materials, and even if it did, the abrasion test is inapplicable to window glazing utilized in locations where there is no requirement for luminous transmittance. Our final point of agreement is that FMVSS 205 does not require luminous transmittance through windows behind the driver in multipurpose passenger vehicles vans and trucks where such windows are not requisite for driving visibility.
It would appear that the only area where we do not yet agree is with regard to the requirement for luminous transmittance through windows behind the driver of a passenger car. I believe that, as is the case with MPV, there is no requirement for luminous transmittance unless the window is requisite for driving visibility.
During our meeting I had requested that you provide me with copies of various documents where the policy of NHTSA had been expressed on the issue of luminous transmittance requirements for passenger cars. I had also requested any materials that you might have which discuss the rationale for a distinction between passenger cars and MPVs. Further, if it is possible to delineate any concerns which might warrant a distinction between MPV and passenger cars, it would be very helpful to us in finding ways of dealing with such concerns. After we have had an opportunity to review the materials which you are providing us, I would very much appreciate having the opportunity to discuss the issue with you further. In the meantime, if there are any materials which we have which might be of use to you, please do not hesitate to contact me.
Thank you again for meeting with me and for your help in this matter.
Sincerely,
JOHN RUSSELL DEANE III cc: Calvin Hill Roger Greene Chuck Blum Bob Burch |
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ID: 2646oOpen The Honorable Leon E. Panetta Dear Mr. Panetta: This responds to your inquiry on behalf of Dr. Courtney F. Morgan, a constituent of yours. Dr. Morgan has purchased a 1987 model year Saab. The particular version of the model he saw at the dealership was equipped with manual lap/shoulder safety belts. However, the actual car that was delivered to Dr. Morgan was equipped with automatic safety belts. Dr. Morgan feels that the automatic belts are "hazardous and cumbersome," and asked what he must do in order to remove the automatic belts and have manual safety belts installed in place of the automatic belts. I am pleased to have this opportunity to explain our law and regulations to you. Pursuant to the National Traffic and Motor Vehicle Safety Act in 1966 (the Safety Act; 15 U.S.C. 1381 et seq.), a Federal safety standard on occupant crash protection was issued in 1967 requiring the installation of manual safety belts in all new passenger vehicles. Although these manual safety belts have shown their effectiveness as safety devices, only a relatively small number of motorists used their manual belts. As recently as 1984, only 12.5 percent of front seat occupants wore their manual belts. Because so few people used their manual safety belts, the Department issued the first requirement for automatic restraints in passenger cars in 1970, and it was scheduled to take effect in 1973. That implementation date was delayed for a variety of reasons. On June 24, 1983, the Supreme Court of the United States found our decision to repeal the requirement for automatic restraints was "arbitrary and capricious," and ordered us to reconsider the decision (Motor Vehicle Manufacturers Association v. State Farm Mutual Automobile Insurance Co., 463 U.S. 29). Against this background, former Secretary of Transportation Dole issued a final rule amending the Federal safety standard on occupant crash protection on July 17, 1984. That decision, which promotes both automatic restraints and State safety belt use laws, provides a comprehensive approach designed to save as many lives as possible as quickly as possible. We believe that effectively enforced State laws requiring the proper use of the manual safety belts that are in most cars on the road today offer our best opportunity to save lives today at virtually no cost to the consumer. The decision also reflects our belief in the value of automatic occupant protection systems, such as air bags and automatic belts, by requiring all new cars to have automatic protection starting with the 1990 model year. The automatic protection requirements are phased in during the preceding three model years, beginning with 10 percent of each manufacturer's 1987 model year cars. Each manufacturer must equip 25 percent of its 1988 model year cars with automatic occupant protection systems, and 40 percent of its 1989 model year cars with automatic occupant protection systems. However, if the Secretary determines not later than April 1, l989, that State belt use laws have been enacted that meet certain criteria and that are applicable to two-thirds of the U.S. population, then the automatic restraint requirements will be rescinded. The following prohibition appears in section 108 of the Safety Act: "No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative ... any device or element of design installed on or in a motor vehicle ... in compliance with an applicable Federal motor vehicle safety standard ..." In this case, the automatic safety belts in Dr. Morgan's Saab are a "device or element of design installed in a motor vehicle in compliance with an applicable Federal motor vehicle safety standard." Removal of the automatic belts would render them inoperative. Therefore, Federal law prohibits Saab, any other manufacturer, and any distributor, dealer, or motor vehicle repair business from removing the automatic safety belts from Dr. Morgan's car. Please note that this Federal prohibition does not prevent Dr. Morgan himself from removing the automatic belts from his car. However, we encourage vehicle owners not to tamper with the occupant crash protection systems installed in their vehicles. If Dr. Morgan were to remove the automatic belts himself and improperly install manual safety belts, he would be putting himself and other vehicle occupants at substantially greater risk of injury in a crash. Please thank Dr. Morgan for informing us of his views on this subject. We welcome the interest of all concerned citizens on this important subject and I appreciate this opportunity to advise you of our efforts to improve occupant crash protection for all Americans. Sincerely,
Erika Z. Jones Chief Counsel ref:VSA#208 d:2/5/88 |
1988 |
ID: aiam4557OpenMr. William Shapiro Volvo Cars of North America Rockleigh, NJ 07647; Mr. William Shapiro Volvo Cars of North America Rockleigh NJ 07647; "Dear Mr. Shapiro: This responds to your letter concerning the testin of hydraulic brake hose assemblies to the whip resistance requirement (S5.3.3) of Standard No. 106, Brake Hoses. I regret the delay in responding. Your question relates to Table II of Standard No. 106, which specifies the amount of slack that should be introduced when mounting brake hose assemblies on the whip test apparatus. (The amount of the hose indicated as 'slack' in Table II is the difference between the projected length of the hose assembly (when mounted in the whip test machine) and the free length of the hose while maintained in a straight position.) Slack must be present in the hose when mounted on the whip test machine to enable the proper 'whipping' movement of a brake hose assembly. Without slack, an assembly would probably be incapable of withstanding any rotation of the movable header of the whip test apparatus described in Standard No. 106 without rupturing. Table II specifies the amount of slack for some sizes of assemblies, and not for others. You ask whether a hydraulic brake hose assembly of a size falling in the latter category--viz., an assembly comprised of a brake hose that is 19 to 24 inches in free length, and which is more than one-eighth inch or three millimeters (mm.) in diameter--'need not be tested to meet or exceed the whip resistance requirement' of the standard. With regard to NHTSA's Standard No. 106 compliance testing, your understanding is correct that Table II does not specify the amount of slack for testing assemblies of the size you describe. Due to the absence of the slack specification, NHTSA does not require testing of such assemblies to the whip resistance requirements of the standard. With regard to your certification that the brake hose assemblies you manufacture comply with all applicable requirements of Standard No. 106, you are correct that hydraulic brake hose assemblies of the size you describe are not subject to the whip resistance requirements. However, the agency urges manufacturers to ensure that these assemblies perform in a safe manner while subject to environmental conditions of vehicle operations which may result in flexing of the brake hose or brake hose assembly. Please contact my office if you have further questions. Sincerely, Erika Z. Jones Chief Counsel"; |
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ID: aiam4904OpenMr. Jt Covelli President Jt Covelli Marketing & Media 5501 Tolman Terrace Madison, WI 53711; Mr. Jt Covelli President Jt Covelli Marketing & Media 5501 Tolman Terrace Madison WI 53711; "Dear Mr. Covelli: This responds to your recent undated letter t Taylor Vinson of this Office with respect to whether Federal law allows the use of decals on center highmounted stop lamps. You report that Wisconsin has no law governing the use of a decal on the brake light. THe subject is a complicated one under Federal law, but I shall try to explain it as simply as possible. There is no restriction under Federal law on the application of a decal to the center stop lamp, if the decal is placed there by the vehicle owner. Center stop lamps were not required on passenger cars manufactured before September 1, l985, and there are no Federal restrictions upon application of decals to lamps on pre-l986 model cars that may have been retrofitted with them. With respect to application of the decal on the center lamp of a passenger car manufactured on or after September 1, l985, Federal law prohibits the application a decal by a manufacturer, distributor, dealer, or repair shop, either before or after its sale to the first owner, if the application of the decal creates a noncompliance with the Federal motor vehicle safety standard on lighting. Conversely, such application is permitted if the lamp remains in compliance with all applicable Federal requirements with the decal installed. For example, the Federal standard calls for a minimum 'effective projected luminous area' of 4 l/2 square inches. Application of a decal to a lamp meeting the minimum area requirement would reduce the effective projected luminous area below 4 1/2 square inches, creating a noncompliance. On the other hand, if that area were large enough, and more than 4 1/2 square inches of it remained after the application of a decal, application of the decal would not create a noncompliance with the luminous area specification. The standard also calls for measurement of photometric performance at certain specified test points on the lamp. Obviously, the lamp must continue to provide the minimum photometric performance specified by the standard for those test points with the decal applied. Thus, whether application of a decal by a manufacturer, distributor, dealer, or repair shop creates a noncompliance is dependent upon the size of the lamp and the size, lettering, and transparency of the decal. Sincerely, Paul Jackson Rice Chief Counsel"; |
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.