Skip to main content

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 12241 - 12250 of 16510
Interpretations Date
 search results table

ID: nht72-5.14

Open

DATE: 11/22/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Truck Body & Equipment Association Inc.

TITLE: FMVSR INTERPRETATION

TEXT: Thank you for your letter of November 15, 1972, and your kind words about my participation in your convention.

In your letter you asked a question that arose at the convention, concerning the responsibility of a tank manufacturer who completes a tank truck for a customer who carries both gasoline and fuel oil. You asked,

"Can a tank manufacturer by simply certifying the GVWR make a unit which will be legal at full load with gasoline, the lighter of the two products, and leave it to the user to ensure that he does not exceed the GVWR when he is carrying a mixed load or fuel oil only?"

On the specific and limited facts that you have given, the answer is that the manufacturer will not be in violation of the Certification regulations. There are two ways in which a manufacturer might find himself liable on slightly different facts, however. If in any way the manufacturer provides information to the purchaser, through owner's manuals, promotional materials, or otherwise, which could reasonably be considered a "rated cargo load", he will be in violation of @ 567.5(a)(5) if the GVWR does not reflect that figure. For example, if the vehicle were described explicitly as being capable of carrying 5,000 gallons of fuel oil, we would consider that to be the equivalent of a rating of that volume times the normal density of the oil.

The other possible liability would be for a safety-related defect. This would arise in a case where the vehicle was found to be unsafely equipped for carrying the loads that the manufacturer has reason to know would be imposed on it. Such a finding would depend on all the facts of an individual case.

Obviously, the best course for the manufacturer, from the standpoint of both safety and he avoidance of liability, is to equip his vehicles fully with equipment that is rated to carry the loads that he believes the vehicles will carry.

ID: nht72-5.15

Open

DATE: 12/14/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Jerome Palisi; Highway Safety Management Specialist

TITLE: FMVSR INTERPRETATION

TEXT: SUBJECT: YOUR MEMORANDUM OF NOV. 9, 1972, REGARDING THE CERTIFICATION REGULATION

In your memorandum of November 9 you discuss a statement in a TBEA Bulletin, brought to your attention by Mr. Edward Bristol of the Bristol-Donald Company, Newark, New Jersey, which Mr. Bristol interprets as holding a manufacturer responsible for a safety defect if an operator overloads a vehicle, exceeding its GVWR or GAWR's. You ask us to forward you copies of any correspondence with Mr. Bristol or TBEA regarding this matter.

We have attached a recent letter to TBEA, dated November 22, 1972, which clarifies our position, and should alleviate Mr. Bristol's concern. Our position on this issue has been that a manufacturer who properly derives his GVWR and GAWR cannot be held responsible for noncompliance with the certification regulations or a safety defect.

ID: nht72-5.16

Open

DATE: 08/23/72

FROM: LAWRENCE R. SCHNEIDER FOR RICHARD B. DYSON -- NHTSA

TO: James W. Callison

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of July 7, 1972, and your note of July 31, asking whether the following statement may be placed on an invoice to relieve a final-stage manufacturer making the statement of his responsibilities under the Certification regulations (49 CFR Part 567):

"Delivery of this unit was accepted by the undersigned with the understanding that the unit DOES NOT meet all requirements of the Nat'l. Traffic and Motor Vehicle Safety Act. The undersigned assumes full responsibility for compliance."

In a conversation you had with Mike Peskoe of this office on July 31, you elaborated on your question. It appears that such a stamp might be used in either of two situations. First, a final-stage manufacturer might use the statement if he did not wish to certify the vehicle, attempting thereby to pass on the responsibility to the person to whom he delivers it, either a dealer or purchaser. In the second case, an incomplete or intermediate manufacturer has assumed the responsibility for conformity, and certification, pursuant to sections 567.5(c) or (d), and section 568.7, and the final-stage manufacturer is returning the vehicle to the party for whom he completed it, and wishes to make it clear that he is not responsible for certification.

A final-stage manufacturer whose responsibility for certification has not been assumed by an intermediate or incomplete manufacturer cannot remove himself from this responsibility, or require another to assume it for him. The regulations require such a manufacturer to certify the completed vehicle, and his failure to do so can subject him to civil penalties and other sanctions. The use of a disclaimer such as the stamp you enclose would be of no legal effect, even if signed by the person receiving the vehicle.

In the situation where an incomplete or intermediate manufacturer has assumed the certification responsibility, the use of such a stamp would be unnecessary. The final-stage manufacturer should obtain written assurance of that fact from the party assuming the responsibility. before beginning work on the vehicle. Also, the assumption of responsibility is reflected in special provisions regarding the certification label, in accordance with @ 567.5(c) and (d) of the Certification regulations. It would be advisable for any statement concerning this arrangement to make reference to the applicable regulations.

ID: nht72-5.17

Open

DATE: 04/14/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Nissan Motor Co. Ltd.

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of March 29, 1972, in which you ask whether a Certification label "which is made of some kind of hard material other than paper and affixed on the required place by using only one rivet and by gluing" will meet the requirements of section 567.4(b) of the Certification regulations.

We would consider such a label to be riveted, and consequently to meet the requirements of section 567.4(b).

ID: nht72-5.18

Open

DATE: 04/20/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Messrs. Busby Rivkin Sherman Levy and Rehm

TITLE: FMVSR INTERPRETATION

TEXT: In your letter of April 5, you ask whether certain items of lighting equipment that you listed must be certified as conforming to applicable Federal standards, even though the assemblies of which they are a part may require certification.

This will confirm your understanding that the listed items need not be certified. The items of lighting equipment requiring certification are those equipment items specified in Tables I and III of Standard No. 108.

ID: nht72-5.19

Open

DATE: 09/12/72

FROM: JOSEPH R. O'GORMAN FOR FRANCIS ARMSTRONG -- NHTSA

TO: Gardner-Denver Company

COPYEE: E. ROBERT ANDERSON -- REGIONAL ADMINISTRATOR, NHTSA REGION VI

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of August 4, 1972, to our Regional Office in Fort Worth, Texas, that has been referred to me, in which you request information concerning intermediate and final stage manufacturers.

I am enclosing, among other things, a copy of Part 568 of Title 49 of the Code of Federal Regulations that specifies the responsibilities of intermediate and final stage manufacturers. The final stage manufacturer applies the "Gross Axle Weight Rating" to the certification label in accordance with paragraph 567.5 of the Certification Regulation, a copy of Part 567 is also enclosed. The Preamble to Part 568 - Vehicles Manufactured in Two or More Stages, states ". . . By its definition a completed vehicle is one that requires no further manufacturing operations in order to perform its intended function, other than the attachment of readily attachable components and minor finishing operations . . ."

"In the event that a 'readily attachable component is a component regulated by the standard, such as a mirror or a tire, the final-stage manufacturer must assume responsibility and certify the vehicle even though he does not install the particular component. . . ." Persons who change tires, that are furnished by the final-stage manufacturer, prior to delivery to the user are not responsible for certification. However, he should assure himself that the tires he installs are compatible with the weight ratings on the certification label affixed by the final-stage manufacturer.

Final-stage manufacturers can rely on the documentation supplied by the incomplete and/or the intermediate vehicle manufacturer in establishing his weight ratings as long as he has no reason to believe it is false or does nothing in his operation that would change the ratings. Good business practices would dictate that a manufacturer would retain information supplied by other manufacturers that he uses as a basis for his certification.

If you have further questions, I will be pleased to answer them.

ID: nht72-5.2

Open

DATE: 04/17/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Garsite Products Inc.

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of March 8, 1972, concerning the application of Federal standards and regulations to airport refuelers. In a conversation with Michael Peskoe of this office on March 30, 1972, you amplified certain questions you asked in your letter, which are dealt with below.

Initially, you asked whether the Federal motor vehicle safety standards apply to airport refuelers. In the conversation of March 30, you indicated that these refuelers are similar to most tank trucks, and that while operated on or about airports, may frequently be driven on public roads such as perimeter roads between oil tanks and the airport. We would consider these vehicles to be motor vehicles within the National Traffic and Motor Vehicle Safety Act because of their use on public roads, and would consider them to be trucks under the motor vehicle safety standards.

Your second question concerned the fact that, at present, curb weights of chassis furnished to you are not accurately reflected by the manufacturer's specifications, the latter generally being lower than the former. We indicated to you in our phone conversation that the Certification requirements which became effective January 1, 1972, will eliminate this problem by requiring manufacturers to provide gross vehicle and axle weight ratings.

Your third question concerns a chassis which you ordered before the Certification regulations became effective, on which you planned to install a specific tank. The chassis has now been delivered, and it has a GAWR for the rear axle which is 400 pounds less than the weight of the fully loaded tank. While the establishment of both GVWR and GAWR for the vehicle when completed is the responsibility of your company as the final-stage manufacturer, we would consider mounting the tank on this chassis without modifying the latter to accommodate the additional load to raise substantial questions as to the safety of the completed vehicle. If the chassis cannot be modified, we strongly recommend against installing the tank on it.

You ask how you can recognize chassis that have been manufactured after January 1, 1972. Each such chassis, if an incomplete vehicle under the regulations, must be delivered to you with an "incomplete vehicle document" specifying the date of manufacture. A chassis-cab manufactured before that date must bear a label stating its date of manufacture.

Finally, you ask whether in some situations the chassis manufacturer can become the final-stage manufacturer. Sections 567.5 and 568.8 of the regulations provide for a situation where an incomplete vehicle manufacturer may assume all responsibility for the vehicle under the National Traffic and Motor Vehicle Safety Act. In such a case the incomplete vehicle manufacturer will have the responsibility for certification otherwise borne by the final-stage manufacturers.

We are pleased to be of assistance.

ID: nht72-5.20

Open

DATE: 06/20/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Truck Equipment & Body Distributors Association

TITLE: FMVSR INTERPRETATION

TEXT: This is in response to your letter of May 9, 1972, in which you asked several questions concerning certification of multistage vehicles.

Your first set of questions concerned the "altering distributor" label of @ 567.6. In the course of administering this regulation, we have come to regard this as an "optional" label -- one that is not absolutely required in any situation. If a person altering a completed vehicle does not make changes significant enough to make him a remanufacturer who recertifies the vehicle as a manufacturer, he may satisfy the requirements by allowing the existing label to remain in place. In the four examples that you provided in paragraph 2 of your letter, we would consider the first two examples (bumper and tail gate loader) to be marginal ones in which we would probably accept a good-faith determination either way by the person making the alterations, while the last two (brake fluid and fenders) appear to be minor enough that no recertification would be necessary. This also answers your last question.

(Paragraph 4) You are right in suggesting that once a vehicle purchaser takes possession of the vehicle, the standards and regulations no longer apply.

(Paragraph 5) It is true that if a person manufactures a vehicle and uses it himself, it must still conform when he sells it at a later time. To hold otherwise could create a loophole, whereby a manufacturer could make nominal use of his vehicles before selling them.

(Paragraph 6) The passage of the article on my discussion mentioning "liability" dealt with a question on remanufactured vehicles. I don't have a transcript, but it looks as though he was quoting a couple of sentences out of context (although the article was generally good reporting). I was making the point that there could be a level of "rebuilding" a vehicle where the work done, the parts replaced, are so extensive that we would consider it to be manufacturing. It would be an unusual situation. I was indeed referring to compliance with the standards and regulations, not product liability.

Your discussion of installation of third axles seems to reflect a proper understanding of our rules.

With reference to your question in paragraph 8 about the period of time a vehicle must be held by a customer before he can have non-standard alteranations made in it, there is no set period of time. After he has "purchased" it, he can have done with it what he wants. However, the Vehicle Safety Act @ 108(b)(1), does have one important phrase on that subject: "in good faith." If we found that a dealer or distributor were using the first-purchase clause as a ruse to do things that the standards and regulations would not otherwise allow, we would probably do everything we could to stop it--to show that it was not in good faith.

I am glad to be of help to you and your members. I hope, however, that you will limit your questions to situations that have actually arisen, since we do not have the resources to grapple with hypothetical questions.

ID: nht72-5.21

Open

DATE: 03/24/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Truck Equipment & Body Distributors Association

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of March 6, 1972, concerning the certification of pickup trucks that are modified while still in the hands of a dealer. You describe a situation in which the dealer removes the pickup body and sends the vehicle to a final-stage manufacturer for fitting with a service body.

We would consider modifications of the type you describe to be manufacturing under the National Traffic and Motor Vehicle Safety Act, and the Certification regulations (49 CFR Part 567). Because a completed vehicle is involved regulations governing Vehicles Manufactured in Two or More Stages (Part 568) do not apply.

One who remanufactures a completed vehicle assumes the responsibility of any manufacturer of completed vehicles. The extent to which he may safely rely on the original GVWR, GAWR, and statement of conformity depends on what he has done to alter the vehicle. He is required to certify the vehicle by affixing his own label, and must take into account the effects of any modifications he makes.

ID: nht72-5.22

Open

DATE: 02/07/72

FROM: AUTHOR UNAVAILABLE; Richard B. Dyson; NHTSA

TO: Downs-Clark

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of December 30, 1971, concerning whether you must comply with the Certification regulations (49 CFR Part 567) in cases where you "re-barrel" or "re-deck" trailers. You describe these processes as installing a new tank (re-barreling) or platform deck (re-decking) on a used trailer under construction furnished by your customer, which includes axles, tires, wheels, springs, hangers, and internal brake assemblies, in serviceable condition.

You are not required to certify these vehicles as they are manufactured on used chassis and are considered by this agency to be used vehicles under section 108(b)(1) of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. @ 1397(b)(1)).

We are pleased to be of assistance.

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.