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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 1391 - 1400 of 16517
Interpretations Date

ID: 1985-04.6

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/26/85

FROM: AUTHOR UNAVAILABLE; Jeffrey R. Miller; NHTSA

TO: Charles Pekow --Editor, Day Care USA

TITLE: FMVSS INTERPRETATION

TEXT:

Mr. Charles Pekow Editor, Day Care USA 4550 Montgomery Avenue Suite 700-N Bethesda, MD 20814

This is in further response to your July 23, 1985 telephone call to the National Highway Traffic Safety Administration asking whether a Head Start facility is considered a "school" for purposes of determining the applicability of our school bus safety standards. As Ms. Hom informed you, the answer is yes.

Enclosed are copies of two letters from this office addressing this " question. Our December 21, 1977 letter to Mr. James Tydings explains that Head Start facilities are preprimary schools within the scope of the National Traffic and Motor Vehicle Safety Act (as amended by the Motor Vehicle and Schoolbus Safety Amendments of 1974). We have also enclosed a May 10, 1982 letter to Mr. Martin Chauvin of the New York State Department of Transportation. You might be interested in the discussion in the Chauvin letter that distinguishes day care centers from Head Start facilities.

I understand that you might be contacting us with further questions regarding our school bus safety standards. We will be happy to assist you.

Sincerely,

Stephen P. Wood Assistant Chief Counsel for Rulemaking

Enclosures

NOA-30

Mr. James Tydings Thomas Built Buses, Inc. 1408 Courtesy Road P. O. Box 2450 High Point, North Carolina 27261

Dear Mr. Tydings:

This responds to your November 11, 1977, letter asking whether Head Start facilities are considered preprimary schools for purposes of applying the Federal school bus safety standards.

The National Highway Traffic Safety Administration (NHTSA) has determined that these facilities are primarily involved with the education of preprimary school children. Thus, the buses used to transport children to and from the Head Start facilities are considered school buses under the National Traffic and Motor Vehicle Safety Act (as amended by the Motor Vehicle and School Bus Safety Amendments of 1974) and must meet all Federal school bus safety standards. Sincerely,

Joseph J. Levin, Jr. Chief Counsel

ID: 1985-04.7

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/27/85

FROM: AUTHOR UNAVAILABLE; Jeffrey R. Miller; NHTSA

TO: Lawrence F. Henneberger, Esq. -- Arent, Fox, Kintner, Platkin and Kahn

TITLE: FMVSS INTERPRETATION

TEXT:

Lawrence F. Henneberger, Esq. Arent, Fox, Kintner, Plotkin & Kahn Washington Square 1050 Connecticut Avenue, N.W. Washington, D.C. 20036-5339

Thank you for your letter of September 16, 1985, concerning the applicability of the requirement in Federal Motor Vehicle Safety Standard No. 108 for the installation of center high-mounted stop lamps (CHMSL's) to passenger cars manufactured before September 1, 1985. You also asked about the applicability of the CHMSL performance requirements to CHMSL's sold as aftermarket equipment for cars manufactured before that date. I hope the following discussion answers your questions.

You are correct in stating that there is no requirement in Standard No. 108 for installing CHMSL's on new cars manufactured before September 1, 1985. The installation requirement applies only to cars manufactured on or after that date. (48 FR 48235, October 13, 1984.) The only requirements regarding CHMSL's and pre-September 1, 1985 cars are that if a manufacturer voluntarily installs a CHMSL on a car manufactured on or after August 1, 1984, and before September 1, 1985, the installation must be performed in accordance with criteria concerning the location of the CHMSL, and reflections from it. (49 FR 34488, August 31, 1984.)

As to aftermarket CHMSL's for cars manufactured before September 1, 1985, the applicability depends on whether or not the CHMSL is intended to be installed as a replacement for an original equipment CHMSL that was voluntarily installed on a car that was manufactured on or after August 1, 1984, but before September 1, 1985. If the aftermarket CHMSL is intended to be installed in the interior of such a car, then the manufacturer of the CHMSL must comply with the requirement in S3.1.8.4 concerning minimization of reflections. If the CHMSL is intended to be installed on other pre-September 1, 1985 cars, its manufacturer is not subject to any Standard No. 108 requirements for CHMSL's. However, the agency encourages manufacturers of any aftermarket CHMSL to conform as closely as possible to all criteria in the standard for original equipment CHMSL's. We believe that standardization of rear signals minimizes the possibility of creating confusion to following drivers in situations where immediate action is essential to avoid a rear end collision. Further, aftermarket CHMSL's for those other pre-September 1, 1985 cars would be regulated by the applicable law of the State in which they are operated.

I hope this information is of assistance to you. If you have further questions, please let me know.

Sincerely, Jeffrey R. Miller Chief Counsel (202) 857-6087

September 16, 1985 Jeffrey R. Miller, Esquire Chief Counsel National Highway Traffic Safety Administration 400 Seventh Street, S.W., Room 5219 Washington, D.C. 20590 Re: Request for Interpretation; FMVSS 108

Dear Mr. Miller:

As we discussed by telephone, I am requesting that you confirm that Federal Motor Vehicle Safety Standard 108, as it relates to the requirement for installation of a single center, high-mounted stoplamp on passenger cars, does not apply to passenger cars manufactured prior to September 1, 1985, and therefore does not apply to aftermarket center high-mounted stoplamps produced for applications on passenger cars manufactured prior to September 1, 1985.

An expedited response will be very much appreciated.

Sincerely, Lawrence F. Henneberger

ID: 1985-04.8

Open

TYPE: INTERPRETATION-NHTSA

DATE: 10/27/85

FROM: AUTHOR UNAVAILABLE; Jeffrey R. Miller; NHTSA

TO: Rosario Costanzo

TITLE: FMVSS INTERPRETATION

TEXT:

Mr. Rosario Costanzo 28 Amelia Avenue Livingston, N.J. 07039

Thank you for your letter of June 27, 1985, to Stephen Oesch of my staff requesting information on Federal Motor Vehicle Safety Standards relevant to the importation of a wind deflector to be sold as an aftermarket accessory for specific motor vehicles. You also asked how such a deflector should be certified as meeting our standards. I hope the following discussion answers your questions.

The National Traffic and Motor Vehicle Safety Act authorizes the National Highway Traffic Safety Administration to issue Federal Motor Vehicle Safety Standards which are applicable to motor vehicles and motor vehicle equipment. We have issued Standard No. 205, Glazing Materials, which applies to wind deflectors for use in motor vehicles, regardless of their size. Standard No. 205 incorporates by reference Standard ANS Z-26, "Safety Code for Safety Glazing Materials for Glazing Motor Vehicles Operating on Land Highways," of the American National Standard Institute. A copy of Standard No. 205 and ANS Z-26 are enclosed for your reference.

Standard No. 205 specifies performance requirements for various types of glazing and also regulates the locations in vehicles in which each type of glazing may be used. The various types of glazing are designated as "Items" in the standard. Under the requirements of this standard, a wind deflector to be used on a passenger vehicle at locations requisite for driving visibility, such as the devices you wish to import, may be manufactured out of either Item 1, Item 2, Item 4, Item 10, Item 11, or Item 14 glazing materials. You said your deflectors are made of plexiglass. Generally, plexiglass would have to meet the requirements set for Item 4 glazing materials.

Standard No. 205 also sets forth specific certification and marking requirements for glazing materials. The marking requirements for prime glazing material manufacturers (i.e., those, such as Parimor, who fabricate, laminate, or temper the glazing material) that produce glazing designed as a component of a specific motor vehicle are set out in paragraph S6.2 of the standard. Please note that one of the certification requirements is that the manufacturer place its National Highway Traffic Safety Administration-assigned code mark on its products. Our records do not show any code mark assigned to Parimor. Parimor may request a number by writing to our Office of Vehicle Safety Standards at the address shown above.

Under Section 108(a)(1)(A) of the Vehicle Safety Act, new motor vehicle equipment, such as wind deflectors, must comply with applicable safety standards prior to sale. The manufacture, sale, or installation of a deflector that does not conform to the standard, or the installation in a new vehicle in a location that is not provided for in Standard No. 205, would be a violation of Section 108(a)(1)(A). Under Section 109(a), anyone who sells motor vehicle equipment which does not conform to all applicable safety standards is subject to a civil penalty of up to $1,000 for each violation.

Manufacturers and importers of motor vehicle equipment also have responsibilities under the Vehicle Safety Act regarding safety defects and noncompliances in their products. Under Sections 151 et seq., they must notify purchasers about safety-related defects and noncompliances and remedy the product free of charge. Again, Section 109(a) imposes a civil penalty upon any person who fails to provide notification of or remedy for a defect or noncompliance in motor vehicle equipment. A copy of the Vehicle Safety Act and an information sheet outlining the responsibilities of vehicle and equipment manufacturers is enclosed for your reference.

Section 110(e) of the Vehicle Safety Act also affects Parimor, the foreign company manufacturing the wind deflector. That section requires every manufacturer who offers a motor vehicle or item of motor vehicle equipment for importation into the United States to designate a permanent resident of the United States as its agent upon whom service of all processes, orders, notices, decisions and requirements may be made. In order for that designation to be valid the following information must be submitted to our office:

1. A certification that the designation is valid in form and binding on the manufacturer under the laws, corporate by-laws, or other requirements governing the making of the designation at the time and place where it is made; 2. The full legal name, principal place of business and mailing address of the manufacturer; 3. Marks, trade names, or other designations of origin of any of the manufacturer's products which do not bear its name; 4. A statement that the designation shall remain in effect until withdrawn or replaced by the manufacturer; 5. A declaration of acceptance duly signed by the agent appointed, which may be an individual, a firm or a U.S. corporation; and 6. The full legal name and address of the designated agent. In addition, the designation must be sighed by a person with authority to appoint the agent. The signer's name ahd title should be clearly indicated beneath his or her signature. We hope you find this information helpful. Please contact this office if you have any more questions. Sincerely, Jeffrey R. Miller Chief Counsel

Enclosures 28 Amelia Avenue Livingston, N.J. 07039 June 27, 1985 Mr. Steve Oesch Office of the Chief Counsel National Highway Traffic Safety Administration 400 Seventh Street S.W.

Washington, D.C. 20590

Dear Mr. Oesch:

My name is Rosario Costanzo of Cosbar, Inc. I'm sorry I didn't have the pleasure of meeting you at my stop in Washington, but I hope that in the future I'll be more fortunate and have the opportunity of doing so.

As you are probably aware from talking to Mr. Jettener, I'm in the process of importing wind deflectors, specifically those of a company called Parimor, from Bologna, Italy and I'm in need of certain information in order to proceed with a smooth importation of this particular accessory.

Briefly, the airfoil is designed to overcome the lack of front vents in an automobile. Made of plexiglass, the accessory is fitted to overlap the exterior window frame by means of self-locking nuts; once attached, it makes it possible to travel with the car windows open or half-open with less turbulence and noise. There are two different models: the Antiturbo and the Mixer, the latter being considerable small in size. The process that Parimor follows to manufacture the items is of this nature:

A. Molding the liquid material into the actual shape of the product. B. Cutting the molded sample into 95% completed product. C. Smoothing, cleaning and polishing the product. D. Packaging the finished product.

Enclosed please find copies illustrating the items. As a result, these questions arise for clarification: A. If any, what Federal Vehicle Safety Standards apply to the Antiturbo and Mixer? B. What is the responsibility of the manufacturer as to the certified marking on the accessory?

Furthermore, since the Mixer is considerably small in terms of area that it will occupy in the front window of the car, does it require to meet these regulations? Moreover, I would appreciate receiving any other information that is particularly helpful in this matter and most importantly any words of advice concerning this venture.

Thank you so much for your cooperation and I'm looking forward to meeting you personally in the near future, God bless. Sincerely, Rosario Costanzo

ID: 1985y

Open

Mr. Rolf Duerr
Project Engineer
Voith Transmissions, Inc.
P.O. Box 712
York, PA 17405

Dear Mr. Duerr:

This is in response to your letter requesting Department of Transportation "approval" of a fitting to be used in air brake systems in conjunction with your company's product, a driveline brake retarder. I apologize for the delay in this response. Your letter explained that your company's brake retarder is designed to be attached to the air brake system on trucks or buses by means of a fitting, and enclosed a sample of the fitting you plan to use. You asked for DOT approval of the fitting. As explained below, whether the fitting and associated air hoses are subject to the Federal Motor Vehicle Safety Standards (FMVSS) depends upon how the fittings are attached to the vehicle's air brake system.

This agency has the authority under the National Traffic and Motor Vehicle Safety Act of 1966 to issue safety standards applicable to new motor vehicles and items of motor vehicle equipment. We have exercised this authority to establish Standard No. 106, Brake Hoses (49 CFR 571.106; copy enclosed), which applies to motor vehicle brake hoses, brake hose assemblies, and brake hose end fittings.

Your letter did not provide sufficient information for us to offer an opinion as to whether or not the air lines and end fittings used with your product would be considered "brake hoses" and "brake hose end fittings" subject to the requirements of Standard No. 106. It has been NHTSA's long-standing position that accessory air lines and end fittings, such as those used in your product, are "brake hoses" and "brake hose end fittings" only if a failure of the line or fitting would result in a loss of pressure in the vehicle's brake system. (See the enclosed June 5, 1987 letter to Albert Schwarz, and the August 3, 1984 letter to Terry Teeter).

Accordingly, if a failure of the accessory lines or fittings used with your product could result in a loss of pressure in the brake system, the hoses and fittings are subject to all the provisions of Standard No. 106. In this case, the Safety Act specifies that no person shall "manufacture for sale, sell, offer for sale, or introduce or deliver for introduction in interstate commerce, or import into the United States" any of those hoses or end fittings unless those hoses and end fittings comply with all of the applicable requirements in Standard No. 106.

NHTSA has no authority to certify, endorse, or approve in advance any motor vehicles or motor vehicle equipment, including the hoses and end fittings used for this product. Instead, under the Safety Act, the manufacturer is responsible for certifying that its products meet all applicable safety standards. The manufacturer's certification need not be based on actual tests; the only requirement is that the manufacturer exercise due care when making the certification. Once your company has determined that these hoses and end fittings comply with the requirements of Standard No. 106, the Standard requires you to mark these products with the symbol "DOT" to show your company's certification of compliance.

This agency enforces the requirements of Standard No. 106 by randomly purchasing brake hoses and end fittings that have been certified as complying with Standard No. 106. The certified products are then tested by the agency according to the procedures specified in the standard. If the products pass these tests, no further actions are taken.

On the other hand, if the accessory air line running to your product is isolated from the air brake system by means such as a check valve, the hoses and fittings used with your product are not subject to the requirements of Standard No. 106. In this case, your company would not be required to certify that the hoses and fittings used with your product comply with the applicable requirements of Standard No. 106. You would, however, be considered a "manufacturer" of motor vehicle equipment for the purposes of the Safety Act and our regulations. The Safety Act specifies that if either your company or this agency determines that a safety-related defect exists in your product, your company as the manufacturer must notify purchasers of the safety-related defect and must either:

(1) repair the parts so that the defect is removed; or

(2) replace the parts with identical or reasonably equivalent parts which do not have a defect.

Whichever of these options is chosen, the manufacturer must bear the full expense and cannot charge the owner for the remedy if the equipment was purchased less than 8 years before the notification campaign. Similarly, if this product were subject to Standard No. 106, your company would be required to notify owners and remedy without charge to those owners any noncompliance of your product with the requirements of Standard No. 106, as well as remedying any safety-related defect.

For your information, I have enclosed a copy of an information sheet for new manufacturers of motor vehicles and new motor vehicle equipment. This sheet gives a brief description of our regulations and explains how to obtain copies of those regulations. I hope this information is helpful. Please feel free to contact this office if you have any further questions or need additional information.

Sincerely,

Stephen P. Wood Acting Chief Counsel

Enclosures

/ref:106 d:8/23/89

1989

ID: 19867.wkm

Open

Mr. Keely Brunner
Customer Relations and Contract Compliance
Transportation Techniques "Trans Teq"
1705 East 39th Avenue
Denver, CO 80205

Dear Mr. Brunner:

This responds to your e-mail inquiry of April 14, 1999, in which you stated that you are a start-up manufacturer of a hybrid-electric bus for a downtown pedestrian mall. You stated that the bus has a maximum speed of 30 miles per hour and a gross vehicle weight rating (GVWR) of 46,000 pounds. You cited paragraph S5.1.2 of Federal Motor Vehicle Safety Standard (Standard), No. 120, Tire selection and rims for motor vehicles other than passenger cars (copy enclosed) and asked whether, since your bus cannot attain a speed of 80 kilometers per hour in 3.2 kilometers or less or 50 mph in 2 miles or less, S5.1.2 applies to your bus. The answer is no.

Paragraph S5.1.2 provides that except for vehicles that are unable to reach a speed of 80 kmh in 3.2 km or reach a speed of 50 mph in 2 miles, the sum of the maximum load ratings of the tires fitted to an axle system must be not less than the gross axle weight rating (GAWR) of the axle system. The GAWR is stated on the vehicle certification label required by 49 Code of Federal Regulations (CFR) Part 567. Paragraph S5.1.2 specifies other requirements, but since your bus has a maximum speed of only 30 mph, none of the requirements of S5.1.2 would apply to your bus. The remaining provisions of Standard No. 120, however, do apply to your bus.

It is not clear from your incoming e-mail whether Trans Teq has manufactured, sold, or delivered any vehicles into interstate commerce. If so, we have no record of Trans Teq having submitted to this agency the information required by 49 CFR Part 565.7(d) (copy attached). Further, if Trans Teq began manufacturing vehicles more than 30 days ago, we have no record of it meeting the reporting requirement of 49 CFR Part 566.6 (copy attached). Please submit the required information without delay.

I am enclosing for your further information a fact sheet entitled "Information for New Manufacturers of Motor Vehicles and Motor Vehicle Equipment," which discusses other pertinent requirements of the Federal motor vehicle safety standards.

I hope this information is helpful to you. Should you have any questions or need additional information, feel free to contact Walter Myers of my staff at this address, by telephone at (202) 366-2992 or by fax at (202) 366-3820.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosures
ref:120
d.6/23/99

1999

ID: 1986y

Open

Mr. Takayoshi Chikada
Manager of Automotive Lighting
Engineering Control Dept.
Stanley Electric Co., Ltd.

FAX 03-792-0007 (Japan)

Dear Mr. Chikada:

This is in reply to your letter of June 16, l989, to Mr. Van Iderstine of this agency, by FAX as you requested. You have asked four questions with respect to the recently amended Federal Motor Vehicle Safety Standard No. l08.

We responded to your first two questions in a letter dated June l9 to Mr. Hasegawa of your office. A copy is enclosed for your reference. Since that time, however, in response to a petition by General Motors, we have changed the effective date of paragraph S7.7.5.1(a) to December l, l989, with respect to replaceable bulb headlamp systems. A copy of this notice is also enclosed.

Your third question is:

How should we prove the confirmation to the requirement of S7.7.2.2? We think the combination of Horizontal and Vertical angle within the aim range will be so huge and it is not practicable to test for all combinations.

This paragraph applies to headlamps aimed by moving the reflector relative to the lens and headlamp housing, or vice versa. The agency has frequently advised manufacturers that there is no legal requirement that conformance be demonstrated through the test procedures stated in the standard. While the agency will use those procedures in its compliance testing, the manufacturer may certify compliance with the performance requirements of a standard through engineering studies, computer simulations, mathematical calculations, or other means intended as an exercise of due care and affording a reasonable basis upon which to certify compliance. Your final question is:

It is acceptable to set up initial "0" point of S7.7.5.2(a)(2) not mechanically but photometrically?

You may determine the "O" point by whatever means you deem appropriate for the headlighting system, as long as the method achieves a horizontal "O" point that may be used for the purposes of paragraph S7.7.5.2(a)(2), and any other paragraph in which the horizontal "O" mark is required to be determined.

In the future, please address your requests for interpretations of Standard No. l08 to this office.

Sincerely,

Stephen P. Wood Acting Chief Counsel

Enclosure

ref:l08 d:8/23/89

1989

ID: 19873.ztv

Open

Mr. Daniel R. Todd
Muth Mirror Systems
4221 High Tech Lane
Sheboygan, WI 53082-0418

Dear Mr. Todd:

This is in reply to your e-mails of April 15 and April 19, 1999, requesting confirmation that an interpretation that this Office provided John K. Roberts of Muth Mirror Systems on January 15, 1991, with respect to a "Stop Turn Mirror" ("STM") is valid also for a revised version of that device.

The original STM was designed to appear as a mirror to the vehicle operator, but as a stop and turn signal indication system to the operator of a vehicle following. Your current "Signal Mirror" provides a "high intensity chevron shaped signal which is mounted behind and projects through the mirror," and is operated by the turn and hazard warning signal system. That is to say, the chevron signal in the exterior rearview mirror on the driver's side of the vehicle will indicate a left turn, and the chevron signal in the exterior rearview mirror on the passenger side of the mirror will indicate a right turn. Both chevron signals will activate simultaneously when the hazard warning signal is activated.

You are also developing a "high extended mount stop lamp" (HEMSL) which is operated when the brakes are applied; this feature consists of "a straight line of high intensity lamps" centered near the top edge of the mirror, which also "are mounted behind and project through the mirror surface." As you explained to Taylor Vinson of this office on May 24, the stop signal will appear simultaneously in both exterior mirrors. You have asked us four questions about how our 1991 letter applies to these two new mirrors.

The first question relates to Federal Motor Vehicle Safety Standard No. 108's prohibition of combining a center high mounted stop lamp (CHMSL) with any other lamp or reflective device. We advised in 1991 that a mirror was not a reflective device for purposes of Standard No. 108, and that the question would be whether the turn signal functions of the STM were clearly separated from the stop function so that the question does not arise as to whether they are combined. You have asked "Based on the updated device description provided above and current code interpretation, does the Chief Counsel's remarks still stand."

The original STM provided a stop signal through the interior rearview mirror, whereas the new mirror system provides a stop signal through the two exterior mirrors. The stop signals are supplementary to the stop lamps that are mounted on the rear of the vehicle. Paragraph S5.4 Equipment combinations of Standard No. 108 does not prohibit combining stop lamps, other than CHMSLs with other lighting devices. The question that must be answered with respect to supplementary lighting equipment is whether they impair the effectiveness of lighting equipment required by Standard No. 108. With respect to the Muth mirror, we do not conclude that such an impairment exists. This also answers your final question: whether the stop and turn signal function may be combined in the Signal Mirror alone which does not incorporate a CHMSL. The answer is yes; Standard No. 108 does not prohibit the combining of supplementary stop and turn signal/hazard warning signal lamps.

Our 1991 letter also discussed the possibility of the STM replacing the original equipment CHMSL. We advised that the STM could not do so if it were intended to be located in the exterior rear view mirrors rather than the center interior mirror. This is the configuration of your HEMSL. Thus, the supplementary stop lamp HEMSL may not replace the original equipment CHMSL.

You next ask "If the HEMSL, mounted in the exterior rear-view mirrors, provided a certain geometric visibility and photometric output such that it contributed to the required CHMSL visibility and photometric standard, in this theoretic system of three lamps, could the lamp mounted on the centerline have its geometric and photometric requirements tailored such that when combined with the HEMSLs and provided the overall CHMSL requirements indicated in Standard No. 108?" The answer is no; Standard No. 108 requires that there be a single, not multiple, lamp comprising the CHMSL, and that that single CHMSL meet all specified photometric and visibility requirements, and not share them with an array of three lamps.

If you have further questions, you may phone Taylor Vinson (202-366-5263).

Sincerely,
Frank Seales, Jr.
Chief Counsel
ref:108
d.6/14/99

1999

ID: 1987y

Open

Mr. Michael E. Kastner
National Truck Equipment
Association--Washington Office
1350 New York Avenue, N.W., Suite 800
Washington, D.C. 20005-4797

Dear Mr. Kastner:

Thank you for your letter to Secretary Skinner concerning the National Highway Traffic Safety Administration's (NHTSA's) actions to extend certain Federal Motor Vehicle Safety Standards (FMVSS's) to light trucks and vans. The Secretary has asked me to reply.

Your letter was especially concerned with NHTSA's November 1987 amendment to FMVSS 204, Steering Control Rearward Displacement, and our denial of NTEA's petition for reconsideration of that rule. I regret that I am unable to respond to your comments at this time. As you know, the Department and NTEA are presently involved in litigation concerning those actions. In view of the litigation, we feel it would be inappropriate to address your comments in this letter.

We appreciate your interest in informing the Department of your views. I can assure you that Secretary Skinner is actively interested in each of the letters he receives regarding NHTSA's mission to improve motor vehicle safety. Let me assure you also that the potential impacts on small businesses is one of our concerns in each of our rulemaking actions.

A copy of your letter, and this response, will be placed in NHTSA's docket section.

Sincerely,

Jeffrey R. Miller Acting Administrator ref:204 d:8/22/89

1989

ID: 19882.drn

Open

Pastor Carlo DeStefano
Fairwinds Baptist Church
801 Seymour Road
Bear, DE 19701

Dear Pastor DeStefano:

This responds to your April 14, 1999, letter requesting information on Federal statutes governing school bus safety. Dorothy Nakama of my staff spoke to your secretary, who informed us that your church operates Fairwinds Christian School, which teaches students from kindergarten through twelfth grade. Ms. Nakama was informed that you seek information about the school bus safety laws administered by the National Highway Traffic Safety Administration (NHTSA) to determine what your responsibilities are when transporting your students.

I am pleased to provide the following information. NHTSA is authorized to issue and enforce Federal motor vehicle safety standards applicable to new motor vehicles. Our statute at 49 U.S.C. 30112 requires any person selling or leasing a new vehicle to sell or lease a vehicle that meets all applicable standards. Accordingly, persons selling or leasing a new "school bus" must sell or lease a vehicle that meets the safety standards applicable to school buses. Our statute defines a "schoolbus" as any vehicle that is designed for carrying a driver and more than 10 passengers and which, NHTSA decides, is likely to be "used significantly" to transport "preprimary, primary, and secondary" students to or from school or related events. 49 U.S.C. 30125. By regulation, the capacity threshold for school buses corresponds to that of buses -- vehicles designed for carrying more than ten (10) persons. For example, a 15-person van that is likely to be used significantly to transport students is a "school bus."

Our statute thus regulates primarily manufacturers and sellers of new school buses. Any person selling a new school bus must sell a vehicle that is certified as meeting our school bus standards. Conventional buses (including 15-passenger vans) are not certified as doing so, and thus cannot be sold, as new vehicles, under circumstances where they are likely to be used to carry students on a regular basis.

In general, our school bus safety statute does not regulate school bus users. Instead, each State has the authority to set its own standards regarding the use of motor vehicles, including school buses. You should check Delaware law to see what your State law requires when your private school transports its students. For information on Delaware's requirements, you can contact Delaware's State Director of Pupil Transportation:

Mr. Ronald Love, State Supervisor, School Transportation
Delaware Department of Education
P. O. Box 1402
Dover, DE 19903
Telephone: (302) 739-4696

In closing, we wish to emphasize that school buses are one of the safest forms of transportation in this country, and that we therefore strongly recommend that all buses that are used to transport school children be certified as meeting NHTSA's school bus safety standards. Further, using buses that do not meet NHTSA's school bus standards to transport students could result in increased liability in the event of a crash. Since such liability would be determined by State law, you may wish to consult with your attorney and insurance carrier for advice on this issue.

I hope this information is helpful. For more information about the safety features of a school bus, I am enclosing NHTSA's publication: "School Bus Safety: Safe Passage for America's Children." If you have any further questions please feel free to contact Dorothy Nakama at this address or by telephone at (202) 366-2992.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosure
ref:VSA#571.3
d.5/25/99

1999

ID: 19883.wkm

Open

Tim Broten, President
Skiddd Wheel Indicator
Box 129
Starbuck, Mb.
ROG 2PO
CANADA

Dear Mr. Broten:

Your letter to Mr. Ron Evenson, State Director, Office of Motor Carrier Safety, Bismarck, North Dakota, was forwarded to this agency for reply.

You stated in your letter that your company produces the Skiddd wheel lock indicator that is described as a strip of special nylon plastic that is attached to the wheel stud of a truck. The Skiddd protrudes out from the wheel about two inches, which allows the driver to see from his rear view mirror whether the wheel is turning. The intent is to permit the driver to determine from the truck cab whether the wheels are in fact turning or whether one or more of them are skidding. You asked for a "letter of approval" to indicate that the Skiddd indicator complies with applicable safety standards.

By way of background information, the National Highway Traffic Safety Administration (NHTSA) has the statutory authority to issue Federal motor vehicle safety standards (FMVSS) applicable to new motor vehicles and new items of motor vehicle equipment. Federal law establishes a self-certification system under which motor vehicle and equipment manufacturers themselves certify that their products comply with all applicable FMVSSs. For that reason, NHTSA neither tests, approves, disapproves, endorses, nor grants letters of approval of products prior to their introduction into the retail market. Rather, we enforce compliance with the FMVSSs by purchasing vehicles and equipment and testing them. We also investigate safety-related defects.

Turning now to the Skiddd wheel lock indicator, we would classify it as an item of motor vehicle equipment, defined in 49 U.S. Code (U.S.C.) 30102(a)(7)(B) as any "part or component manufactured or sold for replacement or improvement of a system, part, or component, or as an accessory or addition to a motor vehicle." Specifically, the Skiddd wheel lock indicator is an accessory if it meets the following criteria:


a. A substantial portion of its expected uses are related to the operation or maintenance of motor vehicles; and

b. It is purchased or otherwise acquired, and principally used by ordinary users of motor vehicles.


After reviewing your letter and its enclosed product brochure, we conclude that the Skiddd wheel lock indicator is an accessory. It was designed with the expectation that a substantial portion of its expected use will be with motor vehicles. Further, the pictures of the Skiddd in the brochure make it clear that the wheel lockup indicator is intended to be purchased and principally used by ordinary users of motor vehicles, mostly truck drivers, to continuously monitor whether their wheels are turning properly.

While the Skiddd wheel lock indicator is a motor vehicle accessory, NHTSA has not issued any FMVSSs establishing performance standards applicable to this product. However, the manufacturer, whether you or a licensee, is subject to the requirements of 49 U.S.C. 30118 - 30121 (copies enclosed) which set forth the recall and remedy procedures for products with defects related to motor vehicle safety. Thus, if NHTSA or the manufacturer determines that the product contains a safety-related defect, the manufacturer is responsible for notifying purchasers of the defective equipment and for remedying the problem free of charge to the consumer.

Additionally, 49 U.S.C. 30122 (copy enclosed) provides that a manufacturer, distributor, dealer, or vehicle repair business may not knowingly "make inoperative" any device or element of design installed on or in a motor vehicle in accordance with any FMVSS. Therefore, the Skiddd could not be installed by one of those entities if such use would adversely affect the compliance of a vehicle with any FMVSS. This provision does not apply, however, to equipment attached to or installed on or in a vehicle by the vehicle owner.

I note that the Department's Office of Motor Carrier Safety has jurisdiction over interstate motor carriers operating in the U.S. On August 18, 1999, the Vehicle and Operations Division of that agency responded to your inquiry about using the Skiddd indicator on commercial motor vehicles. We have coordinated this response through the Acting Director of the Office of Motor Carrier Safety.

For your further information, I am enclosing a fact sheet we prepared entitled Information for New Manufacturers of Motor Vehicles and Motor Vehicle Equipment, and Where to Obtain NHTSA's Safety Standards and Regulations.

I hope this information is helpful to you. If you have any questions or need additional information, feel free to contact Edward Glancy of my staff at this address, by telephone at (202) 366-2992, or by fax at (202) 366-3820.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosures

cc: Mr. Ronald O. Evenson
State Director
Office of Motor Carrier Safety
1471 Interstate Loop
Bismarck, ND 58501

ref:119
d.11/23/99

1999

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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