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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 14591 - 14600 of 16517
Interpretations Date

ID: nht90-2.88

Open

TYPE: Interpretation-NHTSA

DATE: June 15, 1990

FROM: James W. Lawrence -- Manager, Compliance and Technical Legislation, Volvo GM Heavy Truck Corporation

TO: Stephen P. Wood -- Acting Chief Counsel, NHTSA

TITLE: Re Interpretation on Conformance of Aftermarket Parts

ATTACHMT: Attached to letter dated 4-9-90 from Stephen P. Wood to Mehdi Rowghani (A35; Std. 214; Part 541); Also attached to letter dated 3-13-91 from Paul Jackson Rice to James W. Lawrence (A37; Std. 214; VSA 108(a)(2)(A))

TEXT:

I recently became aware of an Administration interpretation (copy attached) to a parts distribution that states in part as follows:

"...there is no requirement that the replacement door restore the vehicle to a condition in which it continues to meet Standard No. 214."

In contrast, the Act section 108a(2)(A) prohibits rendering inoperative devices or elements of design installed in compliance to a Safety Standard. I interpret this provision of the Act to require the installation of parts meeting the same performance r equirements as OEM parts. A clarification would be most appreciated.

ID: nht90-2.89

Open

TYPE: INTERPRETATION-NHTSA

DATE: 06/18/90

FROM: PAUL JACKSON RICE -- NHTSA CHIEF COUNSEL

TO: JOHN W. GARRINGER

TITLE: NONE

ATTACHMT: LETTER DATED 05/07/90 FROM JOHN W. GARRINGER TO STEPHEN P. WOOD -- NHTSA, OCC 4751; LETTER DATED 02/01/90 FROM JOHN W. GARRINGER TO TERRY M. GERNSTEIN

TEXT: This responds to your letter asking whether Federal law permits the installation of tinted plastic film on the bottom of motor vehicle windshields. The purpose of this film would be to reduce glare for the driver and any front seat passengers. I am ple ased to have this opportunity to explain how our laws and regulations apply to such a product.

Our agency is authorized under the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.; the Safety Act) to issue safety standards applicable to new motor vehicles and new items of motor vehicle equipment. NHTSA, however, does not appro ve or certify any vehicles or items of equipment, nor do we endorse any commercial products or processes. Instead, the Safety Act specifies that each manufacturer itself must certify that its products meet all applicable safety standards. The agency pe riodically tests vehicles and items of equipment for compliance with the standards, and also investigates alleged defects related to motor vehicle safety and alleged violations of other statutory provisions.

Pursuant to this authority, NHTSA has issued Standard No. 205, Glazing Materials (49 CFR @ 571.205), which sets forth performance requirements for windows and other glazing items installed in motor vehicles. Among the requirements set forth in Standard N o. 205 are specifications for minimum levels of light transmittance. A minimum of 70 percent light transmittance is required in glazing areas requisite for driving visibility, which includes all windows in passenger cars. In trucks and buses, the winds hield and windows to the immediate right and left of the driver and the rearmost window, if the latter is used for driving visibility, are considered to be requisite for driving visibility, and therefore subject to the 70 percent minimum light transmitta nce requirement.

Your letter did not provide any information on the light transmittance that would be measured through glazing with your Hood Glare product installed on it. The combination of the glazing material and your tinting film must allow at least 70 percent light transmittance to comply with the requirements of Standard No. 205. No manufacturer or dealer would be permitted to install your tinting film on the glazing materials on new vehicles, unless the manufacturer or dealer certifies that the vehicle continue s to comply with the 70 percent minimum light transmittance and other requirements of Standard No. 205.

After a vehicle is first sold to a consumer, 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 i noperative" any device or element of design installed in a vehicle in compliance with any safety standard. This provision of the law means that no manufacturer, dealer, distributor, or repair business could install tinting film if the addition of the ti nting film to the glazing would result in a light transmittance of less than 70 percent, or otherwise cause the vehicle to no longer comply with the applicable requirements of Standard 205. Violations of this "render inoperative" prohibition can result in Federal civil penalties to the manufacturer, dealer, distributor, or repair business of up to $ 1000 for each noncomplying installation.

Section 108(a)(2)(A) of the Safety Act does not affect vehicle owners. Hence, vehicle owners themselves may install tinting film or any other product on the glazing of their vehicle, regardless of whether the installation causes the vehicle to no longer comply with Standard No. 205. Individual States have the authority to regulate the operational use of vehicles by their owners, and, therefore, have the authority to regulate or preclude individual owner modifications to the glazing of their vehicles.

I have enclosed an information sheet that summarizes the relationship between Federal auto safety laws and motor vehicle window tinting. I hope this information is helpful. If you have any further questions or need any additional information about this topic, please feel free to contact Dorothy Nakama of my staff at this address or by telephone at (202) 366-2992.

ENCLOSURE

ID: nht90-2.9

Open

TYPE: INTERPRETATION-NHTSA

DATE: APRIL 9, 1990

FROM: STEPHEN P. WOOD

TO: GARY R. BALANZA

TITLE: NONE

ATTACHMT: LETTER DATED 10-11-89 TO NHTSA FROM GARY R. BALANZA ATTACHED.

TEXT:

This is in reply to your letter asking for an interpretation whether your invention "will interfere with the standard equipment" required by Motor Vehicle Safety Standard No. 108. I regret the delay in responding.

Your invention, "Pinlights", is described as an auxiliary lighting system designed to fit an automobile's side contours. Its purpose is to light up the entire length of a vehicle, so that it will be more conspicuous at night. We note your uncertainty a s to "number of stripes allowed on Bcar", "colors allowed on a car", and "maximum brightness allowable."

There are two ways to approach your invention under the National Traffic and Motor Vehicle Safety Act, our authority for the issuance of the motor vehicle lighting standard, Standard No. 108. The first is as an item of original equipment, in place on th e vehicle at the time it is bought by its first owner. You have asked the correct question: does the invention impair the effectiveness of the lighting equipment required by Standard No. 108? The equipment most likely to be impaired are the side marke r lamps and reflectors. These items are located near the front and rear of the vehicle, to enhance vehicle conspicuity by affording an approximation of vehicle length, and an indication of the vehicle's front and rear. The lamps are amber to the front, and red to the rear. Your invention would be located along the side of the vehicle, from front to rear. This suggests that the color of your device should similarly be amber to the front and red to the rear, so as not to impair the effectiveness of th e directional function of the side marker lamps.

The second way to approach your invention is as an item available in the aftermarket. Standard No. 108 does not apply to a vehicle in use. However, as it applies to your question, the vehicle Safety Act prohibits modifications by manufacturers, distribu tors, dealers, or motor vehicle repair businesses if they render inoperative, in whole or in part, any of the required lighting equipment. In most cases, we consider an impairment of new vehicle equipment to be equivalent to a partial inoperability. Fu rther, if installation of aftermarket equipment directly affects the performance of original equipment (such as a reduction of light output through an interference with the wiring), that would certainly be considered a partial inoperability.

Lighting equipment that is not covered by Standard No. 108 remains subject to the requirements of each State in which a vehicle on which it is installed is registered and/or operated. We are unable to advise you on State laws, and suggest that, for an o pinion, you write the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard,

Arlington, Va. 22203.

ID: nht90-2.90

Open

TYPE: INTERPRETATION-NHTSA

DATE: 06/18/90

FROM: PAUL JACKSON RICE -- NHTSA CHIEF COUNSEL

TO: DOUGLAS MAYES -- PRESIDENT CREATIVE PRODUCTS, INC.

TITLE: NONE

ATTACHMT: LETTER DATED 10/17/89 FROM DOUGLAS MAYES -- CREATIVE PRODUCTS TO NHTSA; RE BRAKING DISTANCE TEST AND LABORATORIES USED BY DOT; OCC 4087

TEXT: This responds to your letter asking questions in relation to your product called "gyroscopic wheel covers." We apologize for the delay in our response.

According to your letter and accompanying information, you claim that use of "gyroscopic wheel covers" can reduce stopping distance. You stated that Dr. Carl Clark of this agency suggested that you request this office to provide a letter specifically ou tlining the requirements of the agency's braking test, and a list of the various testing facilities used by the agency when testing a product for this purpose. You then asked for a letter stating the "stopping distance test guidelines" of Safety Standar d No. 105, Hydraulic Brake Systems," and a list of laboratories acceptable to DOT that could be used to test your product. You also asked whether an SAE standard is a proper example of a stopping distance test. You stated that it is your intention to us e these testing standards and one of the acceptable laboratories so as to properly document your product's test results in compliance with the DOT testing standards.

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 th e manufacturer to ensure that its products meet applicable standards.

Safety Standard No. 105, Hydraulic Brake Systems, applies to passenger cars and other motor vehicles. The standard specifies, among other things, a number of stopping distance tests that each motor vehicle must meet. I have enclosed a copy of the stand ard for your information.

I note that Standard No. 105 was not designed for the purpose of evaluating whether a product such as yours can improve stopping distance. We are unable to offer an opinion as to the appropriateness of using Standard No. 105's stopping distance tests fo r that purpose, or how such a test program would best be carried out.

This agency does not provide recommendations or endorsements for particular testing laboratories. I have, however, enclosed a list of the independent laboratories conducting compliance tests for NHTSA's Office of Vehicle Safety Compliance during the cur rent fiscal year.

I have also enclosed a copy of an information sheet we have prepared which provides information for new manufacturers of motor vehicles and motor vehicle equipment.

I hope this information is helpful.

[NHTSA STANDARD NO 105 HYDRAULIC BRAKE SYSTEMS; 49 CFR CHAPTER V; DATED 10/01/89 OMITTED]

ID: nht90-2.91

Open

TYPE: Interpretation-NHTSA

DATE: June 20, 1990

FROM: Dennis T. Johnston -- Senior Executive Engineer, Product Engineering and Regulatory Affairs, Sterling Motor Cars

TO: General Jerry R. Curry -- Administrator, NHTSA

TITLE: Re Sterling Superlocking System

ATTACHMT: Attached to letter dated 10-5-90 from B. Felrice to D.T. Johnston (A36; Part 543)

TEXT:

Rover Cars of North America (formerly Austin Rover Cars of North America, d.b.a. Sterling Motor Cars), importer of the British Sterling passenger car, manufactured by the Rover Group Ltd., U.K. sent you a letter dated March 14, 1990 outlining a proposed modification to our antitheft system in the 1991 Model Year. Due to marketing considerations, this enhanced system, referred to as 'superlocking' will not be available for the 1991 Model Year. Therefore Sterling would like to withdraw that submission. If we elect to offer this system at some point in the future we will resubmit a request for de minimus change to our currently approved theft prevention system.

We would like to introduce a minor revision to our currently approved system for the 1991 Model Year, however. Our present system, once armed, will activate if the trunk is opened, even using the key, unless the system is disarmed. Our proposed modific ation would allow the system to be disarmed when the trunk is opened by the key and rearmed when the, trunk lid is closed. Forcing open of the trunk without using the key would still activate the alarm.

If you have any questions regarding this request please feel free to contact me on (213) 437-6282 at your earliest convenience.

ID: nht90-2.92

Open

TYPE: Interpretation-NHTSA

DATE: June 22, 1990

FROM: Ed McCarron -- Western Star Trucks Inc.

TO: Dee Fujita -- Chief Counsel's Office, NHTSA

TITLE: FMVSS 302 Burn Test

ATTACHMT: Attached to letter dated 6-29-90 to E. McCarron from P. J. Rice; (A35; Std. 302) TEXT:

As per our conversation, below is a sketch (cross section). This shows the corner of a cushion, specifically a mattress.

(Graphics omitted See illustration on original. 1) cover 2) foam 3) foam backing 4) fill 5) corner reinforcement 6) fill backing (at corners)

Can you please recommend how this would be tested.

ID: nht90-2.93

Open

TYPE: INTERPRETATION-NHTSA

DATE: 06/22/90

FROM: PAUL JACKSON RICE -- NHTSA CHIEF COUNSEL

TO: RALPH H. SHEPPARD, -- ADDUCI, MASTRIANI, MEEKS & SCHILL

TITLE: NONE

ATTACHMT: LETTER DATED 06/11/90 FROM RALPH H. SHEPPARD; IMPORTATION OF A NON-CONFORMING VOLVO CAB CHASSIS INTENDED FOR RE-EXPORT TO SWEDEN; OCC 4872

TEXT: This is in reply to your facsimile letter of June 11, 1990, with regard to the imminent importation of a "Volvo truck cab chassis manufactured in Belgium pursuant to Swedish environmental and safety standards." Given the time restrictions of your client, we have given this matter priority attention.

The unit would be imported by your client, BAF Communications Corporation of Massachusetts, for completion as a mobile television transmission facility, and, upon completion, would be exported to Sweden. You believe that the unit may be eligible for tem porary importation into the United States under at least one of four compliance exceptions that you have listed, and you have asked for confirmation of your belief.

This is a case of first impression under the Imported Vehicle Safety Compliance Act of 1988 (P.L. 100-562) and its implementing regulation, 49 CFR Part 591, which became effective January 31, 1990. None of the four exceptions you cited are exactly on po int with the facts in this case, but we believe the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.) may be broad enough to accommodate your client.

Your first suggestion is that temporary importation be allowed pursuant to section 591.5(c); the vehicle does not comply with all applicable Federal motor vehicle safety standards but is "intended solely for export. . . and the vehicle bears a label or t ag to that effect." However, your client does not intend to import the chassis cab "solely" for export, but, in fact, to complete its manufacture before its export.

Under your second suggestion, temporary importation would be allowed pursuant to section 591.5(d), where the importer certifies that (s)he is a nonresident of the United States, importing the vehicle for personal use for a period not to exceed one year, and will export the vehicle not later than one year after entry. You report that the president of the Swedish company, "the ultimate purchaser of the completed vehicle, and a non-resident of the United States, is prepared to certify that the vehicle wou ld be imported solely" for its completion, and that it would be exported thereafter. However, this is not appropriate as the importer of record, your client BAF, is in fact a resident of the United States.

You have also suggested that importation might be accomplished pursuant to section 591.5(a)(1), that the vehicle was not manufactured primarily for use on the public roads. In your view, this exception may apply as the vehicle will not be manufactured p rimarily for use on the public roads of the United States. We cannot concur with this interpretation. This exception is intended to apply to vehicles manufactured primarily for off-road use, such as golf carts, all-terrain vehicles, and farm tractors. The completed chassis cab would be intended for on-road use and could, at some future time, be reimported into the United States for use here.

Finally, you believe that the unit could be imported under section 591.5(e) as a vehicle requiring further manufacturing operations to perform its intended purpose. This is not fully appropriate because the importer must also declare that "upon completi on of such further manufacturing operations [the vehicle] will comply with all applicable Federal motor vehicle safety standards."

In a telephone conversation with Taylor Vinson of this Office on June 14, you informed us that the owner of the chassis cab is Comvik Skyports, a Swedish corporation. From the standpoint of Part 591, the most appropriate solution would be for the Swedis h company to appear as the importer of record (rather than BAF), and we understand that you believe that this course of action could be followed. Although one of the requirements of the regulation is that the importer provide a passport number and count ry of issue, this assumes that the importer is an individual, not a corporation. It will be sufficient for our purposes for the declaration to note that Sweden is the residence of Comvik. This suggested course of action would fulfill the non-resident im portation requirements of section 591.5(d).

However, because this is a case of first impression and because the U.S. Customs Service, not the Department of Transportation, is the Federal agency directly involved in admitting vehicles into the United States, it is possible that Customs might be rel uctant to admit a vehicle intended for completion for commercial purposes as one imported for "personal use." If Customs is unwilling to admit the chassis cab under section 591.5(d), but is willing to admit it as imported "solely for export", we would al low importation under that provision. Alternatively, if Customs regards importation under the further manufacturing operations exception of section 591.5(e) as appropriate, we would not object to this as long as it is clearly marked on the HS-7 importati on form that the vehicle will not conform with the Federal safety standards upon its completion, but will be exported at that time.

Regardless of the category under which the chassis cab is admitted, BAF must fulfill a statutory requirement outside the importation requirements upon completion of its manufacturing operations if it is to avoid a potential liability for a civil penalty. The National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.) prohibits any person from manufacturing a motor vehicle that does not comply with all applicable Federal safety standards upon completion of manufacture. However, it excuses th ose vehicles intended solely for export and so labeled (15 U.S.C. 1397(b)(3)). Therefore BAF should affix a label or tag to the chassis cab stating that the vehicle is intended for export.

ID: nht90-2.94

Open

TYPE: Interpretation-NHTSA

DATE: June 22, 1990

FROM: Lawrence F. Henneberger -- Arent, Fox, Kintner, Plotkin & Kahn

TO: Paul Jackson Rice -- Chief Counsel, NHTSA

TITLE: Re Request for Interpretation

ATTACHMT: Attached to Ford Bulletin number 10 dated 12-15-89 entitled Splicing Into The Stop Lamp Electrical Circuit, signature by R.R. Chestnut; Also attached to memo dated 6-6-90 from Tekonsha Engineering Company; Also attached to letter dated 8-31-78 from J.J. Levin, Jr. to L.F. Henneberger; Also attached to letter dated 5-2-84 from F. Berndt to L.F. Henneberger; Also attached to letter dated 11-30-81 from F. Berndt to K.G. Moyer (A23; Std. 108; Redbook 3); Also attached to letter dated 9-10-90 from P.J. Rice to L.F. Henneberger (A36; VSA Sec. 103 (d); Std. 108)

TEXT:

I am submitting this request for interpretation on behalf of my client, Echlin Inc. and more specifically Tekonsha Engineering Company, a subsidiary of Echlin, concerning a California Vehicle Code lighting provision which, in our view, conflicts with and is preempted by Federal Motor Vehicle Safety Standard (FMVSS) 108.

The respective NHTSA and California requirements at issue are subparagraph S5.5.4 of FMVSS 108 and subparagraph 24603(f) of the California Vehicle Code. These provisions are reproduced in juxtaposition at Attachment A to this letter. Essentially, the conflict arises from the California Highway Patrol's (CHP) interpretation of 24603(f) as requiring the activation of a vehicle's stop lamps upon the application of the manual emergency override for use in controlling trailer sway.

Tekonsha believes that the California provision is at odds with S5.5.4 of FMVSS 108 since its hand controlled emergency device (a) is not intended to and in the usual case, does not result in diminished vehicle speeds; (b) does not involve application of the vehicle's service brakes; (c) if connected to the stop lamps, would provide an unsafe, false braking signal; and (d) by not being connected to the stop lamps, eliminates other unsafe conditions caused by electrical interference.

BACKGROUND

Tekonsha has recently developed and introduced into the market a new generation, "state of the art" product known as the Commander Electronic Brake Control specifically designed to avoid splicing into the stop lamp switch circuit. This new development eliminates electrical interference including interference which causes serious safety problems. Electrical interference can, for example, prevent the speed control from disengaging upon braking, or deactivate antilock brake system operation. See Ford Motor Company Bulletin No. 10 (December 15, 1989) and Tekonsha product memorandum (June 6, 1990), both enclosed, respectively, as Attachments B-1 and B-2.

The Commander brake control permits the driver of a vehicle to use the hand control to override the trailer brakes in an emergency mode to

control swaying. In this emergency condition, the Commander brake control does not send out false signals because it is not connected into the stop lamp switch circuit. It is not the intention of the driver in controlling sway to stop or diminish speed. Therefore, by definition, the stop lamps should not be activated.

REGULATORY APPLICATION

Subparagraph S5.5.4 of FMVSS 108 provides that the "stop lamps on each vehicle shall be activated upon application of the service brakes." A review of the applicable SAE Standard, SAE J586 FEB84 (currently referenced by FMVSS 108), provides, at S2.1 of the SAE standard, a definition of "stop lamps" as "lamps giving a steady light to the rear of a vehicle to indicate the intention of the operator of a vehicle to stop or diminish speed by braking."

Indeed, previous interpretations of NHTSA have restricted stop lamp activation to vehicle functions which involve deceleration of the vehicle. See, e.g., the agency's two interpretations to the undersigned on behalf of Jacobs Manufacturing Company, by letters dated August 31, 1978 (Attachment C-1), and May 2, 1984 (Attachment C-2).

Subparagraph S5.1.3 of FMVSS 108 provides, in part, that "no additional ... motor vehicle equipment shall be installed that impairs the effectiveness of lighting equipment required by this standard." In a November 30, 1981, letter of interpretation issued by NHTSA's Chief Counsel to Mr. Kenneth Moyer, the agency emphasized that a motor vehicle device which activated the stop lamps "under a condition indicating an intent other than (to stop or diminish speed by braking) ... could impair the effectiveness of the stop lamps." The 1981 interpretation letter went on to state that NHTSA considered "any use of required lighting equipment for a purpose other than as defined, as an 'impairment'" precluded by what is presently subparagraph S5.1.3 of Standard 108 in the case of original equipment, and as a violation of the National Traffic and Motor Vehicle Safety Act as a device which would "render ineffective in whole or in part" required lighting equipment, in the case of an aftermarket device.

In strong language which we believe is directly applicable to CHP's attempted stop lamp indication requirement here, NHTSA, in its November 1981 interpretation letter, underscored its position that a stop lamp, under FMVSS 108, must operate in such a way as to indicate the intention of the vehicle operator to stop or diminish speed by braking.

"We are especially concerned that a high rate of 'false alarms' may lead to a decrease in the overall warning value of the stop lamp signal itself, i.e., the 'cry wolf' phenomenon. This could lead to a significant reduction in the effectiveness of any proposed system."

The November 30, 1981, interpretation letter is included in our submission as Attachment D.

Subparagraph 24603(f) of the California Vehicle Code provides that "stoplamps shall be activated on application of the service (foot) brake and the hand control head for air, vacuum, or electric brakes." The

ambiguous drafting and resulting difficulties of interpreting a conjunctive provision such as the foregoing notwithstanding, CHP has taken the position that the cited clause mandates application of the stop lamps when the Commander Electronic Brake Control manual emergency override is used, even though the service brakes are not applied at the time. Besides the potential safety hazards presented by stop lamp circuit connection with the override as outlined above, this condition, which is typically intended to control trailer sway and not "to stop or diminish speed by braking," presents a false braking signal to following vehicles. By logical extension, the CHP position could require stop lamp indication for any of a myriad of vehicle activities and functions, none of which is related to vehicular braking or deceleration.

Tekonsha submits that the CHP position frustrates and is totally at odds with the plain wording and underlying intent of subparagraph S5.5.4. In the situation under review, the service brakes are not in the applied position and the vehicle is not in a stopping mode because it is not subject to any decelerating mechanism of the braking system. Under these circumstances, Tekonsha believes that the CHP position with respect to California vehicle Code subsection 24603(f) results in the California standard's being substantively dissimilar to FMVSS 108 on the same aspect of motor vehicle equipment performance and as such, preempted by the application of Section 103(d) of the National Traffic and Motor Vehicle Safety Act, 15 U.S.C. S1392(d).

CONCLUSION

For the reasons as set forth, Tekonsha respectfully requests an interpretation confirming its view that subparagraph 24603(f) of the California Vehicle Code is preempted by S5.5.4 of FMVSS 108 to the extent that the former mandates stop lamp activation for a vehicular function such as the Commander Electronic Brake Control manual emergency override, which is unrelated to stopping activity and intended to assist in controlling a swaying trailer under emergency conditions without application of the service brakes.

We appreciate your consideration of our request for interpretation, and encourage you to contact the undersigned, should questions remain.

FMVSS 108 S S5.5.4

The stop lamps on each vehicle shall be activated upon application of the service brakes. The highmounted stop lamp on each passenger car shall be activated only upon application of the service brakes.

California Vehicle Code S 24603(f)

Stoplamps shall be activated upon application of the service (foot) brake and the hand control head for air, vacuum, or electric brakes....

ID: nht90-2.95

Open

TYPE: INTERPRETATION-NHTSA

DATE: 06/26/90

FROM: PAUL JACKSON RICE -- NHTSA CHIEF COUNSEL

TO: MANUEL R. GARCIA

TITLE: NONE

ATTACHMT: LETTER DATED 04/02/90 FROM MANUEL R. GARCIA; OCC 4654

TEXT: This is in reply to your letter of April 2, 1990, to Ms. DeMeter of this Office, with respect to importation requirements for motor vehicles. You have recently bought a 1974 BMW 1602 made "overseas", and would like information on Federal safety (and EPA ) requirements the car must conform to before it is shipped, or, alternatively, whether it is permissible to make the necessary repairs after the car arrives in the United States.

Changes in the law affecting importation of cars subject to the Federal motor vehicle safety standards, which were effective Janaury 31, 1990, have made the process of importing nonconforming vehicles much more difficult than before. In brief, your car can be imported only if this agency has made a determination that it is capable of conversion to meet the Federal motor vehicle safety standards. If an affirmative determination has been made, you may import the vehicle only if you have a contract with an importer who has registered with this agency to undertake to conform the vehicle to meet Federal requirements. If the conversion work has been performed abroad, the registered importer is nevertheless responsible for submitting verification that the w ork has been done. At this early date in implementing the law, the agency has made no determinations of vehicle eligibility, and has appointed only a handful of registered importers. I believe that the regulations of the EPA are similar; importation is accomplished through an "independent commercial importer" (ICI). We are forwarding a copy of your letter to that agency for its response.

You haven't indicated when you anticipate importing the BMW. I suggest, as the time approaches, you write our Director, Office of Vehicle Safety Compliance, National Highway Traffic Safety Administration, Washington, D.C. 20590. He can then provide you with the latest list of registered importers, and vehicles for which affirmative importation determinations

2

have been made. If your car is not among them, you may persuade a registered importer to petition the agency on your behalf. However, there is a fee imposed for consideration of petitions (either $ 1,560 or $ 2,150, depending on the car). This is paya ble in advance, and is non-refundable if a petition is denied. Further, a vehicle owner is not eligible to submit such a petition.

You didn't say how "recently" you bought your car. However, if it was before October 31, 1988, and you were stationed outside the U.S. at that time and have never before imported a nonconforming vehicle, the law allows you, until October 31, 1992, to im port the car personally, without a registered importer and without an importation determination, and to have conversion work done by anyone you choose.

You also asked for "the publication that covers the Code of Federal Regulations and the Federal Register." I am not sure what you mean, but I am enclosing our new vehicle importation form, Form HS-7, which all importers of motor vehicles must execute upo n arrival of their vehicles. It is, in essence, a concise form of the new importation regulation. I am also enclosing copies of that regulation, and the ones on registered importers, vehicle eligibility determinations, and fees.

ENCLOSURES

ID: nht90-2.96

Open

TYPE: Interpretation-NHTSA

DATE: June 27, 1990

FROM: Olivier M. Sprangers -- A.T. Kearney, Inc.

TO: James T. Brooks -- Department of Transportation, Federal Highway Administration, Office of Traffic Operations HTO-21

TITLE: None

ATTACHMT: Attached to letter dated 1-8-91 from Paul J. Rice to Olivier M. Sprangers (A37; Std. 125); Also attached to letter dated 8-20-90 from Harry B. Skinner to Olivier M. Sprangers (OCC 5444)

TEXT:

With reference to our telephone conversation of Monday 25th of June, we'd like to ask your help in preparing the best advice for our customer. There are in fact two major concerns, for which we'd appreciate your written comments.

The first one concerns the process of approval of a new triangle. Basically, the company has designed the product such that it fits within the regulations you have supplied us, namely 49 CFR Ch. III par. 393.95 and 49 CFR Ch V 571.125. The company inten ds to have this verified by a neutral testing organisation. Is this a required or advisable step, and are there any other steps which have to be taken in order to be allowed to start selling the product in the US market?

The second concern is about the term "collapsible" in said regulations. Most traffic triangles are collapsible in the sense that the two sides ("legs") pointing upwards can be flapped down, and the supporting feet can be turned resulting in a flat and th in, long package. This company's product, allows only for the supporting feet to be turned and brought into the same flat surface as the triangular, resulting in a flat, triangle shaped thin package. Would this structure still be within the meaning of the term "collapsible"?

Next to these two concerns, we'd highly appreciate your advice concerning other official government people to contact, who could offer valuable advice in the application of this product.

We highly appreciate your time and efforts in this matter, also on behalf of our client.

We'd kindly welcome your answer within two weeks, if possible.

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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