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 |
|---|---|
ID: nht75-1.19OpenDATE: 10/28/75 FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA TO: Toyota Motor Sales, USA, Inc. TITLE: FMVSS INTERPRETATION TEXT: This responds to Toyota's September 5, 1975, request for confirmation that the brake warning indicator labeling requirements in Standard No. 105-75, Hydraulic Brake Systems, permit the use of "PARK" and "SERVICE BRAKE" but prohibit the use of "PARK" and "BRAKE" as labeling for use on two indicator lamps, one signaling the condition of the parking brake system and the other signaling two or more functions of the service brake system. The relevant requirements of S5.3.5 of the standard state: . . . . If a single common indicator is used, the lens shall be labeled "Brake." If separate indicator lamps are used for one or more of the various functions described in S5.3.1(a) to S5.3.1(d), the lens shall include the "Brake" and appropriate additional labeling (use "Brake Pressure," "Brake Fluid" for S5.3.1(a) and S5.3.1(b)) except that if a separate parking indicator lamp is provided, the single word "Park" may be used. You are correct that S5.3.5 prohibits the use of one indicator labeled "PARK" with another indicator labeled "BRAKE". "PARK" may be used for a separate indicator of the parking brake condition, but only if the other indicator or indicators of brake system condition use the word "Brake" with appropriate additional labeling. You asked if the designation "SERVICE BRAKE" would be a permissible label on an indicator separate from the "PARK" indicator. The designation would be permissible so long as it describes two or more of the conditions listed in S5.3.1(a), (b), or (c). You will note that S5.3.5 has specific labeling requirements for an indicator which signals only one condition in the case of 1(a), 1(b), and 1(d). In the case of S5.3.1(c), "SERVICE BRAKE" would not be appropriate labeling for the antilock function. September 5, 1975 Dr. James B. Gregory, Administrator National Highway Traffic Safety Administration U. S. Department of Transportation 400 Seventh Street, S. W. Washington, D. C. 20590 Re: Interpretation of FMVSS No. 105-75, S5.3.5 Dear Dr. Gregory: We wish to request clarification of our interpretation of S5.3.5, "Brake System Indicator Lamps," of FMVSS No. 105-75, "Hydraulic Brake Systems." In S5.3.5 it reads as follows: ". . . If a single common indicator is used, the lens shall be labeled "Brake." If separate indicator lamps are used for one or more of the various functions described in S5.3.1(a) to S5.3.1(d), the lens shall include the word "Brake" and appropriate additional labeling (use "Brake Pressure," "Brake Fluid" for S5.3.1(a) and S5.3.1(b)) except that if a separate parking indicator lamp is provided, the single word "Park" may be used . . . ." As we interpret it, this requirement does not prohibit the use of a separate indicator lamp for the parking brake labeled "Park" and one for the rest of the brake systems labeled "Service Brake." However, it does prohibit the simultaneous use of two separate indicator lamps labeled "Park" for the parking brake and "Brake" (without any additional labeling) for the other brake system functions, such as those described in S5.3.1(a) and S5.3.1(b). We would appreciate your informing us of your opinion of our interpretation at your earliest convenience. Very truly yours, TOYOTA MOTOR SALES, U.S.A., INC. K. Nakajima Director/General Manager Factory Representative Office KN:mc |
|
ID: nht75-1.2OpenDATE: 02/24/75 FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA TO: Volkswagen of America, Inc. TITLE: FMVSS INTERPRETATION TEXT: N40-30 (TH) FEB 24 1975 Mr. J. W. Kennebeck Volkswagen of America, Inc. Englewood Cliffs, New Jersey 07632 Dear Mr. Kennebeck: This responds to Volkswagen of America's January 24, 1975, request for written confirmation that S5.3.3 of Standard No. 105-75, Hydraulic brake systems, only requires indication of a low fluid level condition (S5.3.1(b)) with the vehicle on a level surface, but that, in the event of a decrease in this fluid level (and apparent fluid volume) due to positioning the vehicle on an incline, the indicator lamp is permitted to activate and then deactivate when the vehicle is repositioned on a level surface. Your understanding of the requirements of S5.3.3. for indication of a low fluid level condition (S5.3.1(b)) is correct. S5.3.3 requires low fluid level indication with the vehicle on a level surface, and an activation due only to positioning on an incline may be extinguished when the vehicle is again placed on a level surface. Yours truly, Richard B. Dyson Assistant Chief Counsel |
|
ID: nht75-1.20OpenDATE: 08/21/75 FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA TO: Toyoda Gosei Co., Ltd. TITLE: FMVSS INTERPRETATION TEXT: Please forgive the delay in responding to your letter of April 25, 1975, which questioned our interpretation of March 13, 1975, of the adhesion requirement of S7.3.7 of Federal Motor Vehicle Safety Standard No. 106-74, Brake Hoses. Our interpretation was that the requirement applies to each pair of adjacent layers of a brake hose. Multilayer hose manufactured in the United States and Europe is in fact made with bonding between all pairs of adjacent layers. There is no change in our interpretation. |
|
ID: nht75-1.21OpenDATE: 03/13/75 FROM: AUTHOR UNAVAILABLE; J. C. Schultz; NHTSA TO: Toyoda Gosei Co., Ltd. TITLE: FMVSS INTERPRETATION |
|
ID: nht75-1.22OpenDATE: 09/11/75 FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA TO: American Trailers, Inc. TITLE: FMVSS INTERPRETATION TEXT: This responds to your letter of August 12, 1975, concerning the application of Federal Motor Vehicle Safety Standard No. 106-74, Brake Hoses, to an anchor coupling. You enclosed a diagram depicting the installation of two of these couplings, and suggested that they are not subject to the labeling requirements of the standard. This interpretation is correct. "Brake hose end fitting" is defined in Standard No. 106-74 as: a coupler, other than a clamp, designed for attachment to the end of a brake hose. The anchor couplings which you have described are attached to the ends of completed brake hose assemblies, rather than to the ends of brake hoses. Therefore, they are not "brake hose end fittings" subject to the standard's requirements. It appears from your letter that you might not consider the nylon tubing to be "brake hose." If the nylon tubing is flexible, however, such an interpretation would be incorrect. "Brake hose" is defined in the standard as: a flexible conduit manufactured for use in a brake system to transmit or contain the fluid pressure or vacuum used to apply force to a vehicle's brakes. Thus flexible chassis plumbing and other flexible conduits, in addition to rubber brake hoses, are subject to the standard's requirements. Sincerely, ATTACH. American Trailers, Inc. August 12, 1975 National Highway Traffic Safety Admin. To - Docket 1 - 5, Brake Hoses Gentlemen: SUBJECT: Anchor Couplings In a sliding suspension condition we use an anchor coupling fitting to join the nylon tubing assembly to the rubber air hose assembly. See the attached sketch. Our question is, whether or not the anchor coupling must meet the labeling requirements of FMVSS-106? Fitting manufacturers to-date have indicated that labeling is not required at this point since the coupling is not part of the air hose assembly. Your earliest reply would be appreciated. Sincerely, Jerry W. McNeil Director Of Engineering cc: D. Wieriman; TTMA (Graphics omitted) AMERICAN TRAILERS, INC. OKLAHOMA CITY, OKLA. Name ANCHOR COUPLING LOCATION Drawn By: McBay Date: 8-11-75 Drawing No. 1-32-0006 |
|
ID: nht75-1.23OpenDATE: 08/25/75 FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA TO: Midland-Ross Corporation TITLE: FMVSS INTERPRETATION TEXT: Please forgive the delay in responding to your letter of March 24, 1975, to Mr. Schwimmer of this office concerning the application of Federal Motor Vehicle Safety Standard No. 106-74, Brake Hoses, to new brake hose assemblies whose end fittings are partially disassembled by vehicle manufacturers. You have described brake hose assemblies equipped with permanent end fittings containing sacrificial sleeves. Although the assemblies are complete when delivered by you to a vehicle manufacturer, they must be partially disassembled by him (because they lack swivel fittings) to facilitate installation in vehicles. At this point the vehicle manufacturer does, as you have suggested, become the hose assembler, assuming responsibility for the assemblies' compliance with the standard and relieving you of responsibility for their continued compliance. He is not, however, required to remove the assembler's band which you have installed pursuant to S5.2.4 (as incorporated by reference in S7.2 and S9.1), although he is free to do so; nor is he required to install his own band, because of the exception in S5.2.2 for assemblies which are assembled and installed by a vehicle manufacturer in his own vehicles. Furthermore, he is not required to replace the sacrificial sleeve in the end fittings, because that sleeve has not yet been used. An aftermarket purchaser who disassembles and then reassembles one of your assemblies also relieves you of responsibility for its continued compliance with the standard. He is not required to remove your assembler's band, nor is he required to replace the sacrificial sleeve. Sincerely, ATTACH. POWER CONTROLS DIVISION Midland-Ross Corporation March 24, 1975 Mark Schwimmer -- Office of the Chief Counsel, National Highway Traffic Safety Administration Subject: Interpretation of Federal Motor Vehicle Safety Standard 106-74, Brake Hoses Dear Mr. Schwimmer: We manufacture air brake hose end fittings and make hose assemblies for original equipment and aftermarket applications. We produce two basic sytles of end fittings; the type that are crimped or swaged onto the hose, and the type that utilizes a sacrificial sleeve or ferrule. These fittings are assembled on fabric reinforced rubber air brake hose (S.A.E. types A and B) only. We are aware that Federal Motor Vehicle Safety Standard No. 106-74, Brake Hoses, regards both of these designs as permanent end fittings. Several questions have arisen regarding technicalities and responsibilities as interpreted through Standard No. 106-74. Rulings by you or your office are requested on the following specific questions: 1. Hose assemblies are produced for sale to a vehicle manufacturer. The end fittings used are of the sacrificial sleeve type construction. These end fittings do not contain a swivel, as in the crimped fitting design. When we produce these assemblies, they are complete, finished and tagged assemblies, meeting the requirements of Standard No. 106-74. Representative samples of our production are audit tested to verify the compliance. After the hose assemblies are received by the vehicle manufacturer, he must partially disassemble the end fittings (due to the lack of a swivel fitting) in order to secure the hose assembly to the air brake system component. At this point we seek interpretations of the following questions. a. Does the vehicle manufacturer now become the "hose assembler" and therefore assume all responsibilities of Standard No. 106-74 as the assembler, as well as exonerate us of all the responsibilities as the assembler? b. If "a" above is answered affirmatively, then should the vehicle manufacturer be obligated to remove our assembler's compliance and identification tag? c. Is the vehicle manufacturer obligated to replace the sacrificial sleeve in the fittings, even though the hose assembly has not been "used" prior to his installation of the assembly? 2. This same situation could occur in the aftermarket, but with little or no control from our standpoint. We are required by Standard No. 106-74 to tag each assembly. If your ruling to questions 1.a. and 1.b. above is affirmative, then we have no way of knowing if the aftermarket purchaser removes our tag as the vehicle manufacturer would be compelled to do. We can check on an original equipment manufacturer's procedures relatively easily, but it would be virtually impossible for us to police the aftermarket to determine if our compliance and identification tag were wrongfully attached to the assemblies in question. Therefore, in the aftermarket situation we request a ruling to the same three questions as asked in 1.a, 1.b, and 1.c above as they apply to aftermarket sales. Very truly yours, Leon C. Huneke -- Chemical Engineer |
|
ID: nht75-1.24OpenDATE: 03/18/75 FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA TO: Stratoflex, Inc. TITLE: FMVSS INTERPRETATION TEXT: This is to confirm the interpretation of the labeling requirements of Federal Motor Vehicle Safety Standard No. 106-74, Brake Hoses, which I gave in a telephone conversation on February 27, 1975. S5.2.4 of the standard requires each brake hose assembly to be labeled with a band. The band must include, among other information, "a designation that identifies the manufacturer of the hose assembly. . . ." A brake hose distributor who manufactures assemblies at multiple locations is not required to assign a designation to each location; a single designation will suffice. Yours truly, ATTACH. Department of Transportation -- Office of Chief Counsel Subject: February 6, 1975 Inquiry on Paragraph S5.2.4 of FMVSS 106 (Tagging Requirement) Attn: Mark Schwimmer Dear Mr. Schwimmer; An inquiry was made on February 6, 1975 at the Office of Chief Counsel to Mr. Mark Schwimmer regarding the FMVSS 106 labeling requirements per paragraph S5.2.4. This inquiry asked if an assembler with multiple locations was required to assign multiple designations. Mr. Schwimmer stated he could not answer the question as it was currently in process of discussion, however, within a few days time he would advise. (Illegible Word) immediately enacted a "hold" on all phases of preparation (Illegible Word) compliance to "tagging" per S5.2.4 expecting clarification (Illegible Word) (Illegible Word) few days. The answer to this inquiry is essential in (Illegible Word) (Illegible Word) requirements for this national program. On February 12, 1975 a meeting was conducted at the Office of Chief Counsel. In attendance were; Mark Schwimmer, D.O.T., Paul Hykes, ATA., Larry Strawhorn, ATA., C.P. Boling, Stratoflex. Discussed were all aspects of "Tagging" requirements including a request to exclude fleets from the tagging requirements at which time Office of Chief Counsel was unable to answer previous inquiry or comment on status except to say, "They will be able to advise in a few days." These 'few days' have now become weeks with no indication of a firm date established to answer our request. This delay has now made it impossible for Stratoflex to complete a responsible national program that will effectively allow customers, which utilize bulk components, to comply by the current effective date of March 1, 1975. We request that the effective date of March 1, 1975 be extended to allow time to reconsider our docket submittal of February 18, 1975 which extensively outlines the economic impact on fleet operators. ATA has determined that the total number of potential assembler's exceeds 4 million as presently defined. This figure alone raises the question of the tagging requirement being unrealistic to impose to administrate in addition to being of little or no value in (Illegible Word) the integrity of the end product. Although we totally disagree with this imposed "tagging" requirement at the fleet level, Stratoflex has made and will continue to make an honest effort to fully comply with all aspects of FMVSS (Illegible Word) and reestablish a national program to support our customers. C. P. Boling SANTA ANA February 18, 1975 National Highway Traffic Safety Administration Department of Transportation Attention: Mark Schwimmer -- Office of the Chief Counsel Ref: FMVSS 106 Paragraph S5.2.4 Gentlemen: We respectfully suggest that the implementation of the referenced tagging requirement, particularly at repair and maintenance levels, will result in an extreme inflationary impact on the trucking industry. Further, in view of the apparent massive effectivity, we seriously question the capabilities of involved suppliers to support this effort from an administrative and logistical standpoint. In this respect, we estimate that there are approximately 40,000 independent fleet or equipment operators that fabricate air brake hose assemblies in maintaining their equipment. In addition, we believe there are approximately 60,000 equipment and component dealerships that are active suppliers to the truck market. The potential effectivity of your labeling/tagging requirement could reasonably be expanded to supplier operations other than those that are primarily related to the automative or trucking industry: many mill supply, hydraulic, and farm equipment outlets service the trucking industry by means of providing hose, fittings, or hose assemblies. The collective effect of your regulation could involve several million suppliers. Our Mr. C. P. Boling visited your office on February 12 and requested clarification or interpretation regarding several facets of the tagging requirement. On behalf of our customers that operate multiple repair operations, we requested clarification as to the necessity for a code number for each operating location. Additional clarification was requested as to applicability in view of the severe impact of this requirement as mentioned above. As of this date, many of our questions are left unanswered and the effective date of the referenced regulation is eight working days away. As the primary hose and fitting supplier to the trucking industry, we are most concerned with any regulation that affects the sale and subsequent supply of our product line. In this regard, it is our intent to comply with all governmental regulations. However, it is our obligation to question the need for tagging operations at user level; and to question the basis under which effectivity at this trade level is necessary, practical, or in the public interest. We do not believe that the authors of the referenced regulation intended that this specific requirement encompass equipment operator maintenance facilities. Rather, the tagging of hose assemblies might properly include hose and fitting manufacturers. In view of the apparent confusion as to who this specific requirement applies to, the potentially severe negative impact of mass effectivity, and the questions that still remain unanswered, we strongly recommend that tagging requirements per se be suspended pending a thorough evaluation. In any event, we urge that your office clarify the applicability of this specific requirement as related to users or fleets that are primarily involved with repairing or maintaining their equipment. If this requirement is applicable to equipment maintenance facilities, we believe an unnecessary and costly burden will be placed on fleet operators, with no positive result that will contribute to public safety. Yours very truly, A. J. Bowie -- General Manager Western Operations |
|
ID: nht75-1.25OpenDATE: 09/19/75 FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA TO: The Weatherhead Company TITLE: FMVSS INTERPRETATION TEXT: This is in response to your letter of July 9, 1975, concerning the banding requirements of Standard No. 106-74. You asked whether the requirement for a band may be avoided in the situation where a hose manufacturer makes a hose assembly to a vehicle manufacturer's "specified requirements," under the exception for hoses "assembled and installed by a vehicle manufacturer." The exception in the standard for assemblies made by a vehicle manufacturer cannot be interpreted to apply to those made by a hose manufacturer, as you suggested, so the answer to your question must be no. It is the intent of the standard to distinguish between the two situations you described. We are presently reviewing the labeling requirements of the brake hose standard in light of your letter and other information. If you wish to present further data and arguments toward the revocation of the banding requirement, the appropriate form in which to do so would be a petition for rulemaking under Part 552. Yours truly, ATTACH. July 9, 1975 Reference: MUE-561 Richard B. Dyson -- Assistant Chief Counsel, National Highway Traffic Safety Administration Subject: Applicability Ruling FMVSS 571.106 Para. S5.2.4 Dear Mr. Dyson: Hydraulic brake hose assemblies that are assembled and installed by a vehicle manufacturer need not be labeled by means of a band around the assembly. Elimination of this labeling band saves at least 3% on the cost of most hydraulic brake hose assemblies. The Weatherhead Company is not a vehicle manufacturer, therefore, the many millions of new vehicle hydraulic brake hose assemblies that we make are now costing 3% more than those assembled and installed by vehicle manufacturers. The resultant cost differential may cause The Weatherhead Company a substantial loss of business or a severe economic hardship. The vehicle manufacturers that are presently our customers may choose to assemble their own hydraulic brake hose to achieve reduced costs. Obviously, orders competitively bid with vehicle manufacturers will be lost or profits jeopardized due to the 3% cost differential. Relief from this unnecessary burden can be obtained without regulatory effect by a favorable ruling on the applicability of Para. S5.2.4 by the National Highway Traffic Safety Administration Counsel. Question: Can "except for those assembled and installed by a vehicle manufacturer in vehicles manufactured by him" (from Para. S5.2.4) be interpreted to include assemblies that are assembled by anyone (such as Weatherhead) so long as they are assembled to the vehicle manufacturer's specified requirements and are then installed in vehicles manufactured by him? This ruling is considered appropriate by Weatherhead since new vehicle assemblies are certified by the vehicle manufacturer's certification of the complete vehicle and the assemblies are normally made to his specified requirements. In addition, absolute traceability of these new vehicle assemblies is already there without the labeling band. After-market assemblies would still have to be banded since they would not be installed by the vehicle manufacturer. Your prompt response to our question of interpretation of applicability of the labeling rule for hydraulic brake hose assemblies would be appreciated. Yours very truly, THE WEATHERHEAD COMPANY John H. Mueler, Manager, Engineering Standards |
|
ID: nht75-4.11OpenDATE: 09/03/75 FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA TO: Crane & Excavator Division TITLE: FMVSS INTERPRETATION TEXT: This responds to your July 28, 1975, letter asking whether the unloaded vehicle weight of a mobile crane carrier would include components that are essential to its specialized function but are not removed for transit purposes. You also suggest alternative wording for a particular exclusion criterion proposed for mobile crane carriers and similar vehicles under Standard No. 121, Air Brake Systems. I have enclosed a copy of a recent notice that amends Standard No. 121. The preamble to the notice deals with the issues you have raised and should make clear to you that vehicle components are not generally considered part of the rated cargo capacity and therefore would not be subtracted from a vehicle's gross vehicle weight rating to determine the unloaded vehicle weight. YOURS TRULY, FMC CORPORATION Crane & Excavator Division July 28, 1975 Richard B. Dyson, Assistant Chief Council Department of Transportation National Highway Traffic Safety Administration Ref: Your letter to me of July 2, 1975: N40-30 (TWH) Thanks for the referenced letter of interpretation as requested by me on June 23, 1975. I fully realize that NHTSA definition of GVWR (Gross Vehicle Weight Rating) does not require that the GVWR be the sum of the vehicles GAWR but must not exceed the sum of the vehicle GAWR's. Your referenced letter states "Unloaded vehicle weight will normally be the GVWR of a vehicle minus its rated cargo load and its assigned occupant weight (at least 150 lbs.). The rated cargo load would not include the weight of portions of a vehicle which are essential to its specialized function but are removed in accordance with State regulation for transit purposes". Therefore, I assume the following: "The rated cargo load would not include the weight of portions of a vehicle which are essential to its specialized function but are not removed in accordance with State regulation for transit purposes". Please advise me if my assumption is correct. To more fully allow our customers to meet the maximum number of State and local regulations it is necessary that our GVWR be a summation of the vehicle GAWR's. Therefore, few of our truck cranes will fall within the 95% or more of GVWR. The regulation would be more meaningful and specific if you deleted "An unloaded vehicle weight that is not less than 95% of the vehicle GVWR" and replaced it with "An unloaded vehicle weight whose cargo portion is less than 5% of the vehicle GVWR". I recommend this change. Please advise me if my assumption is correct and your comments on my recommendation. H. Ray Cozad, Chief Engineer |
|
ID: nht75-4.12OpenDATE: 11/24/75 FROM: AUTHOR UNAVAILABLE; F. Berndt; NHTSA TO: Realco Services, Inc. TITLE: FMVSS INTERPRETATION TEXT: This responds to Realco Services' October 10, 1975, question whether the replacement of the four rails in the sides of a monocoque-type van would qualify as a vehicle assembly operation subject to certification to new vehicle standards, including Standard No. 121, Air Brake Systems. The answer to your question is no. The position of the NHTSA with regard to the use of used trailer components that was discussed in the Stainless Tank and Equipment interpretation letter applies only to situations in which a new trailer body is installed on used running gear. These limitations do not apply where most of the used body (along with used running gear) is retained, as where one or more rails are replaced in the sides of a used monocoque van. Sincerely, ATTACH. October 10, 1975 Frank Berndt -- Acting Chief Counsel, National Highway Traffic Safety Administration Dear Mr. Berndt: Realco Services Incorporated, owner of over 30,000 trailers which are leased to railroads and steamship companies would appreciate a clarification of a new versus used trailer, in the repair of trailers and the compliance of Standard No. 121, Air Brake Systems. In your letter to Mr. Paul Krueger, Stainless Tank and Equipment, Inc., dated August 28, 1975, File N40-30, you refer to manufacturers and to retaining the main frame of the units to qualify as a used chassis. In monocoque construction, the trailer side walls constitute the main load bearing members. In the maintenance of our equipment, we find it necessary to replace one or more items of the trailer sides, ranging from a bottom rail to possibly all four rails, top and bottom. As you know, lifting devices used by the railroads do considerable damage to the trailer top and bottom rails which in many instances demands their replacement. We interpret the ruling to cover only the manufacture of trailers, not the repairs to equipment over its normal life. We would appreciate your confirmation that this is correct. Very truly yours, J. A. Davies cc: C. J. Calvin - T.T.M.A.; J. M. Lillis |
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.