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
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ID: nht88-2.75OpenTYPE: INTERPRETATION-NHTSA DATE: 07/18/88 EST FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA TO: GARY EVANS -- PRESIDENT, WESTEX AUTOMOTIVE CORPORATION TITLE: NONE ATTACHMT: MEMO DATED 2-26-88, TO NHTSA, FROM GARY EVANS-WESTEX TEXT: This is a response to your letter of February 26, 1988, where you asked the National Highway Traffic Safety Administration (NHTSA) whether a product you wish to import and sell in the United States "complies with any standards which may affect it.". You describe the product as a warning triangle that is designed to be attached to the side window of a car. You tell us that this side-mounted triangle is about 20% smaller than the warning device specified in this agency's regulations in Standard 125, War ning Devices. The answer to your question is that the device you described would not comply with Standard 125. Standard 125 sets uniform specifications for warning devices. Paragraph S3 of Standard 125 states that the standard "applies to devices, without self-contained energy sources, that are designed to be carried in motor vehicles, and used to warn approachi ng traffic of the presence of a stopped vehicle, except for devices designed to be permanently affixed to the vehicle." By its own terms, then, Standard 125 applies to all warning devices that are not designed to be permanently affixed to the vehicle. Y ou are mistaken in suggesting that because the device attaches to the vehicle, Standard 125 is inapplicable. As I understand your description, the device is not "permanently affixed" to the vehicle. Rather, it is carried in the vehicle, and the vehicle operator may attach or remove the device as necessary. Therefore, this device is subject to the requirements of Standard 125. According to your letter, this device fails to comply with the minimum size requirements set forth in paragraph S5.2.2 of Standard 125. Section 108(a)(1)(A) of the National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1397(a)(1)(A)) specifies that, " No person shall . . . import into the United States any . . . item of motor vehicle equipment manufactured on or after the date any applicable Federal motor vehicle safety standard takes effect unless it is in conformity with such standard . . ." Standar d 125 took effect on January 1, 1974. Thus, Federal law prohibits you from importing any of the devices described in your letter that were manufactured on or after January 1, 1974. I hope you find this information helpful. If you have further questions, please contact Joan Tilghman of my staff at (202) 366-2992. |
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ID: nht88-2.93OpenTYPE: INTERPRETATION-NHTSA DATE: 08/10/88 EST FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA TO: AMNON SHOMLO -- PRESIDENT, A.A.S. TITLE: NONE ATTACHMT: MEMO DATED 3-25-88, TO ERIKA JONES-NHTSA, FROM AMNON SHOMLO, OCC-1783 TEXT: This is in reply to your letter of March 25, 1988, enclosing a "Peace" decal designed to be affixed to the center highmounted stop lamp. The letters and design are in white, printed on transparent plastic, "in an effort to preserve the basic requirement s for an effective projected luminous area of the lens and the specified candela." You have asked what "Federal/Legal authorizations we need to obtain, stating that we comply with all the regulations and the requirements regarding this product." There are no regulations that apply directly to the decal, nor any Federal restrictions on its sale. Thus you cannot state in any sales materials that the product meets Federal requirements, for there are none. If a center highmounted brake lamp would continue to meet all applicable requirements of Motor Vehicle Safety Standard No. 108 after installation of your decal, there are no restrictions on its use. Although you intend the product to preserve the requirements of Federal Motor Vehicle Safety Standard No. 108, it is not certain that this will occur. The decal has the potential of obscuring light from some of the 13 test points at distances where cand ela photometrics must be measured and the specified minima met. However, its actual effect can be determined only through laboratory tests on lamps of different sizes and lens and reflector designs. Although you have no liability under Federal law for selling this decal, a violation of the National Traffic and Motor Vehicle Safety Act will result if the decal creates a noncompliance and if it is applied by a manufacturer, distributor, or dealer before the first sale of the vehicle. A violation will a lso occur if the decal creates a noncompliance and if it is applied after the vehicle's first sale by any of these persons or by a motor vehicle repair business. There is no violation of Federal law if the decal is applied by a person other than those named above, such as the vehicle owner. In the absence of a violation of Federal law there may nonetheless be State statutes restricting the application of the decal under any circumstances. We are unable to advise you on State laws. I hope that this answers your question. |
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ID: nht88-3.64OpenTYPE: INTERPRETATION-NHTSA DATE: 10/05/88 FROM: BYUNG M. SOH -- TARGET MARKETING SYSTEMS INC TO: TAYLOR VINRON -- OFFICE OF CHIEF COUNSEL NHTSA TITLE: NONE ATTACHMT: ATTACHED TO LETTER DATED 03/25/89 FROM ERIKA Z. JONES -- NHTSA TO BYUNG M. SOH, REDBOOK A33(6); VSA 108(A)2(A); STANDARD 108; STANDARD 211 TEXT: Dear Sir: We would like to have your opinion on the enclosed Hub Cap, whether it violates any applicable Federal Motor Vehicle Safety Standards. It is structured to meet FMVSS No. 571.211. We, however, feel that incorporation of LED's on the hub cap need to be clarified from your office. As described in our press release, the intensity of the LED is maximum 40mmAmp, and it is designed solely fo r cosmetic purpose, not for illuminating purpose. Your immediate reply would be appreciated. Thank you. Sincerely, Enc.: 1. our press release 2. color photo of product in motion STARRACE Self-Lighting Hub Cap What is STARRACE Self-lighting Hub Cap? A Hub Cap that has a self-contained motion activating generator in the core of the Hub Cap, and made of durable, rust-proof, virgin ABS. Maintenance Free and requires NO special tools or knowledge for installation. This innovative concept is patented i n 18 countries including the U.S.A. Requires NO wiring and can be installed/replaced just a easily as replacing a regular Hub Cap. How will STARRACE Self-Lighting Hub Cap Work? STARRACE has 14 LED lights aligned on a linear plane of a hub cap diameter, and self-motion activation generator which could generate a minimum 20 to a maximum 40 mmAmps/LED's depending on the RPM's. Intensity of the LED lights proportionate to the spee d of the vehicle, as it triggers ON/OFF automatically by motion. Target Market of the STARRACE Self-lighting Hub Caps? According to our survey, major demographic target market falls in those ages between 18 to 35, male and female, nationwide: People who spend a considerable amount of money for automotive accessories should be a primary target group. The secondary target group could be those who drive major or rural highways daily. An excellent Safety device by enhancing visibility to other driver in addition to its unique cosmetic purpose. Another substantial potential market is a segment of car owners who like to dec orate their cars to distinguish them from others. STARRACE will certainly satisfy ego's of those sectors. |
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ID: nht88-4.20OpenTYPE: INTERPRETATION-NHTSA DATE: 11/29/88 FROM: JAMES A. COWAN -- DIRECTOR OF ENGINEERING CROWN COACH INC TO: ERIKA JONES -- CHIEF COUNSEL U.S. DEPARTMENT OF TRANSPORTATION NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION TITLE: FMVSS 217 BUS WINDOW RETENTION AND RELEASE ATTACHMT: ATTACHED TO LETTER DATED 01/09/90 FROM STEPHEN P. WOOD -- NHTSA TO JAMES A. COWAN -- CROWN COACH INC; REDBOOK A35; STANDARD 217; LETTER DATED 11/24/89 FROM JAMES A. COWAN -- CROWN COACH INC TO ERIKA JONES -- NHTSA; RE FMVSS 227, BUS WINDOW RETE NTION AND RELEASE; OCC 2847 TEXT: Dear Ms. Jones: In a telephone conversation this morning with Marty J. Paliokes Safety Compliance Engineer for NHTSA, we were referred to your office for an interpretation regarding FMVSS 217, Bus Window Retention and Release. Our question regards figures 1 and 2 (p ages 418 and 419, CFR 49, Parts 400 to 999, October 1, 1985) of the subject regulation. As background information, Crown Coach has developed a new transit style school bus based on our current production body shell. The current bus has been tested and certified for FMVSS 217 compliance as recently as March, 1988; see report no. 217-MSE- 87-10-TR7122-10 prepared under contract no. DTNH22-87-P-01028 for the Office of Vehicle Safety Compliance. Attachment 1 (photograph) shows the relationship of the seat at the emergency exit door to the door opening in this test. In the new bus we have widened the door as shown in attachment 2 (Crown drawing E-504-278). Attachment 3 (photograph) shows the relationship of seats with the new door frame. Our question regards the seat back in front of the seat at the emergency exit. Aforementioned figures 1 and 2 show a two inch (2") dimension between the access regions and the seat back forward of the emergency exit seat. This dimension is noted as "clearance area around seat back, arm rests, and other obstructions". With our wider opening, the entire seat back is in the emergency exit door opening. However, the actual minimum region area between the two seats are unchanged from the previous desi gn. We feel this wider opening is in full compliance with Part S5.2.3 of FMVSS 217. An interpretation on this matter at your earliest convenience will be appreciated. Please call the undersigned at (714) 591-0567 if any additional information is required. Very truly yours, PHOTO GRAPHS OMITTED |
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ID: nht67-1.24OpenDATE: 08/18/67 FROM: AUTHOR UNAVAILABLE; Lowell K. Bridwell; NHTSA TO: Mercedes-Benz of North America, Inc. TITLE: FMVSS INTERPRETATION TEXT: This is in response to your request to Dr. Haddon for an interpretation of the term "rigid material" as it appears in paragraph S3.4.1(b) in the National Highway Safety Bureau's "talking paper" of July 6, 1967. This term is identical to that used in paragraph S.3.4.1(b) of Standard 201, issued August 11, 1967. Therefore, the following interpretation applies to Standard 201 as issued August 11, 1967, a copy of which is enclosed. "Rigid material" does not include a supporting structure of an armrest that is made of flexible spring steel if the supporting structure is designed to flex in the direction of transverse impact upon the pelvic impact area. MERCEDES-BENZ OR NORTH AMERICA INC. July 11, 1967 Dr. William Haddon, Jr. Director National Highway Safety Bureau Re.: Application for Binding Ruling Standard 201, provisional July 6, 1967, Armrests S 3.4.1 (b). As indicated in the discussion of the proposed language on July 9, 1967, we are applying for a ruling that the definition of "rigid material" in line 4 shall be understood not to include such supporting structures of armrests which are made of flexible spring steel when such supporting structure designed to flex in the direction of transverse impact upon the pelvic impact area, and shall therefore not be subject to the requirement of "minimum vertical height of not less than 1"." Argument: There are numerous armrest designs which may not qualify under the requirements of S 3.4.1(a) since they are at some part less than 2" wide laterally, and therefore must qualify under Para. (b). If such armrests are designed to combine the function of a door opener, i.e. with a fingerhole, a flexible spring core is ideally suited and has many times been used as a demonstrably safe design in the past. The spring material, which need not necessarily be steel but may also take the form of various plastics, provides the necessary strength for vertical support required for an armrest but gives upon transverse impact to avoid injury. We should be grateful to receive your ruling at the earliest possible date in view of current production schedules for the 1968 models, and in view of the fact that with this indication we agreed to wave further amending language of the standard Para. S 3.4.1 (b), so as to provide for the possibility of clear definitions in some future revisions. Respectfully, H. C. Hoppe |
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ID: nht72-1.32OpenDATE: 02/05/72 FROM: AUTHOR UNAVAILABLE; Francis Armstrong; NHTSA TO: Garden Spot Oil Company TITLE: FMVSS INTERPRETATION TEXT: This is in response to your inquiry of December 21, 1971, to the Regional Representative of the Secretary of Transportation in Dallas, Texas, and undated letter to the Bureau of Motor Carrier Safety concerning the sale of tires branded "Unsafe for Highway Use." By Notice No. 2, to Docket 70-2 (copy enclosed) the National Highway Traffic Safety Administration issued an amendment to Federal Motor Vehicle Safety Standard (FMVSS) No. 109 specifying the conditions under which tires that failed to pass the minimum performance requirements of FMVSS No. 109 could be sold. This amendment presently permits such tires to be reclassified as "Unsafe for Highway Use," and if properly labeled to be sold for farm wagons or other off-highway uses only. A dealer who sells such tires for passenger car use, or who removes or alters the legend "Unsafe for Highway Use" imprinted on the tire sidewall, in subject to a civil penalty of up to $ 1,000 per violation. It is proposed that on or after March 1, 1972, no tire of a type and size designation specified in FMVSS No. 109, Table 1 of Appendix A, shall be sold, offered for sale, imported, or introduced or delivered for introduction in interstate commerce for any purpose unless it conforms to all the requirements of this standard. If implemented, this proposal will void the authority granted by Notice No. 2 to Docket 70-2 mentioned above. If the Javelin Tire Company of Dallas, Texas, is representing the tires you have on hand as safe for highway use, we would appreciate any evidence to this effect which you can provide. An invoice or a statement from Javelin claiming these tires as suitable for highway use or an affidavit from you attesting to such claims by the Javelin Tire Company would be useful. A copy of the proposed rule, published in Notice 3, Docket 70-2, is enclosed for your information. One of the matters being covered in the rulemaking is whether tires reclassified prior to the effective date of the proposed rule may be sold. Copies of your letters have been entered in the official Docket. When the final rule is issued, it will be published in the Federal Register with a definite effective date. Because of your interest in this matter, we will send you a copy of the amendment when finally issued. Thank you for your interest in highway safety. |
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ID: nht73-5.14OpenDATE: 09/17/73 FROM: AUTHOR UNAVAILABLE; Lawrence R. Schneider; NHTSA TO: Toyota Motors Sales, U.S.A., Inc. TITLE: FMVSS INTERPRETATION TEXT: This is in reply to your letter of August 24, 1973, concerning Toyota's use of a clip to prevent the shoulder belt from rubbing the occupant's neck. Your questions are (1) whether a clip of this type is permitted by Standard No. 208 and (2) whether the clip would be considered a part of the anchorage under Standard No. 210. Your description of the clip indicates that it does not restrict the free travel of the webbing. The clip would therefore not inhibit the ability of the belt to adjust automatically to fit the occupant, as required by S7.1.1 of Standard No. 208. It is our opinion that such a clip is permitted by Standard No. 208. We have also concluded that a plastic guide clip designed so as not to affect the basic geometry of the belt during a crash is not a seat belt anchorage for purposes of Standard No. 210. The clip you describe would therefore not be required to meet the strength of location requirements of that Standard. TOYOTA MOTOR SALES, U.S.A., INC. August 24, 1973 Dr. James B. Gregory, Administrator National Highway Traffic Safety Adm. For the purpose of encouraging our customers to use the seatbelt system, Toyota has been striving to minimize the possible discomfort or irritation which they may experience when wearing the upper torso belts, and we have developed a clip which is attached to the upper portion of the seat back as shown in the enclosed photo. This clip is used to prevent the shoulder harness from contacting the occupant's neck and does not affect the retractive movement of the seatbelt shoulder harness. This clip, which is made of plastic, is designed so as not to hinder the performance of the seatbelt system during an accident. Toyota believes the above-mentioned clip meets the intent of FMVSS No. 208 and the requirements of paragraph @ 7.1.1 of that standard. Toyota does not consider a clip of this nature to be an anchorage to which the requirements of FMVSS No. 210 apply. As soon as we receive your favorable reply regarding this interpretation, we would like to install the clip on some of our models to improve the comfort of the seatbelt system. Your prompt response to this matter would be greatly appreciated. Keitaro Nakajima Director/General Manager Factory Representative Office Attachment (Graphics omitted) |
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ID: nht94-2.58OpenTYPE: Interpretation-NHTSA DATE: April 25, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Ken Simons -- Esq. TITLE: None ATTACHMT: Attached to letter dated 6/25/93 from Kenneth P. Simons to Department of Transportation, Trucking Division (OCC-8877) TEXT: This responds to your letter asking about brake requirements for trailers used in tractor trailer combinations. I apologize for the delay in our response. You asked whether all such trailers are required to be equipped with "maxi" brakes on one or both axles. You state that a "maxi" brake is found on all road tractors and "sets the brakes automatically when the air pressure gets down to a minimum level." Please note that the term "maxi" brakes ordinarily refers to spring brakes used in parking and e mergency brake applications. I further note that most, but not all, trailers are equipped with spring brakes. I am pleased to have this opportunity to explain our requirements. By way of background information, under the National Traffic and Motor Vehicle Safety Act ("Safety Act," 15 U.S.C. S1392), the National Highway Traffic Safety Administration (NHTSA) is authorized to issue Federal motor vehicle safety standards applicable to new motor vehicles and items of motor vehicle equipment. NHTSA does not approve vehicles or equipment. Instead, manufacturers are required to certify that their vehicles or equipment meet all applicable standards. Standard No. 121, Air Brake Systems (49 CFR S571.121, copy enclosed), specifies performance requirements for trucks, buses and trailers equipped with air brake systems. The purpose of the standard is to insure safe braking performance of vehicle under n ormal and emergency conditions. While Standard No. 121 does not require manufacturers to use spring brakes or any other particular type of brake system, many manufacturers use spring brakes to comply with the standard's requirements concerning parking brake performance (truck, buses an d trailers; see S5.6), emergency brake performance (trucks and buses only; see S5.7), and trailer pneumatic system failure performance (see S5.8). I note that while the requirements of S5.65 and S5.8 apply to most air-braked trailers, S3 of Standard No. 121 excludes some trailers from all of the standard's requirements. In addition, S5.6 and S5.8 specify alternative requirements for some trailers. I hope this information is helpful. If you have any further questions about NHTSA's safety standards, please feel free to contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992. |
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ID: 86-4.48OpenTYPE: INTERPRETATION-NHTSA DATE: 08/18/86 FROM: AUTHOR UNAVAILABLE; Erika Z Jones; NHTSA TO: Mr. T. Chikada TITLE: FMVSS INTERPRETATION TEXT:
Mr. T. Chikada Manager, Automotive Lighting Engineering Control Dept. Stanley Electric Co. Ltd. 2-9-13, Nakameguro-ku Tokyo 153, Japan
Dear Mr. Chikada:
This is in reply to your letter of July 7, 1986, asking for our advice on a decorative lighting device for motorcycles. The general principle remains the same as when I last explained it to you. Please refer to my letter to you dated March 24, 1986 (copy enclosed) on the relationship of paragraph S4.1.3 of Motor Vehicle Safety Standard No. 108 to auxiliary lighting devices for motorcycles. If you conclude that the device would not impair the lighting equipment required by Standard No. 108 then paragraph S4.1.3 would not prohibit your device.
You may follow this guideline with reference to any future questions you may have about the permissibility of auxiliary motor vehicle lighting devices. The agency does not approve or disapprove of specific items of lighting equipment.
Sincerely,
Erika Z. Jones Chief Counsel
July 7, 1986
Att.: Ms. Erika Z. Jones Chief Counsel
Department of Transportation National Highway Traffic Safety Administration 400 Seventh Street, S.W. Washington, D.C. 20590 U. S. A.
Re.: Instlallation of decorative extra lighting device to the vehicle, which is not specified in FMVSS No.108
Dear Ms. Jones,
We would like to ask you an advice for the following decorative extra lighting device.
This device will be mounted on the rear side of a motorcycle. We enclose an illustration and a drawing which shows the size, shape and the proximity to a tail & stop lamp. Lens color of this decorative extra lamp is red and its maximum luminous intensity is lower than the minimum of the tail lamp.
We are looking forward to your advice.
Sincerely yours,
Stanley Electric Co., Ltd.
T. Chikada, Manager, Automotive Lighting Engineering Control Dept.
Enc. Drawing 1 : The outlines of the device Drawing 2 : The details of the device (Graphics here) |
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ID: nht94-6.13OpenDATE: April 25, 1994 FROM: John Womack -- Acting Chief Counsel, NHTSA TO: Ken Simons -- Esq. TITLE: None ATTACHMT: Attached to letter dated 6/25/93 from Kenneth P. Simons to Department of Transportation, Trucking Division (OCC-8877) TEXT: This responds to your letter asking about brake requirements for trailers used in tractor trailer combinations. I apologize for the delay in our response. You asked whether all such trailers are required to be equipped with "maxi" brakes on one or both axles. You state that a "maxi" brake is found on all road tractors and "sets the brakes automatically when the air pressure gets down to a minimum level." Please note that the term "maxi" brakes ordinarily refers to spring brakes used in parking and emergency brake applications. I further note that most, but not all, trailers are equipped with spring brakes. I am pleased to have this opportunity to explain our requirements. By way of background information, under the National Traffic and Motor Vehicle Safety Act ("Safety Act," 15 U.S.C. S1392), the National Highway Traffic Safety Administration (NHTSA) is authorized to issue Federal motor vehicle safety standards applicable to new motor vehicles and items of motor vehicle equipment. NHTSA does not approve vehicles or equipment. Instead, manufacturers are required to certify that their vehicles or equipment meet all applicable standards. Standard No. 121, Air Brake Systems (49 CFR S571.121, copy enclosed), specifies performance requirements for trucks, buses and trailers equipped with air brake systems. The purpose of the standard is to insure safe braking performance of vehicle under normal and emergency conditions. While Standard No. 121 does not require manufacturers to use spring brakes or any other particular type of brake system, many manufacturers use spring brakes to comply with the standard's requirements concerning parking brake performance (truck, buses and trailers; see S5.6), emergency brake performance (trucks and buses only; see S5.7), and trailer pneumatic system failure performance (see S5.8). I note that while the requirements of S5.65 and S5.8 apply to most air-braked trailers, S3 of Standard No. 121 excludes some trailers from all of the standard's requirements. In addition, S5.6 and S5.8 specify alternative requirements for some trailers. I hope this information is helpful. If you have any further questions about NHTSA's safety standards, please feel free to contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992. |
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.