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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 2001 - 2010 of 16517
Interpretations Date

ID: 2631y

Open

Mr. Samuel Kimmelman
Engineering Product Manager
Ideal Division
EPICOR Industries, Inc.
3200 Parker Drive
St. Augustine, FL 32084-0891

Dear Mr. Kimmelman:

This is in reply to your letter of August 2, l990, with respect to Motor Vehicle Safety Standard No. l08.

It is your understanding that, when a vehicle is delivered to its purchaser with dealer-installed trailer hitch and associated wiring, it must conform to all applicable Federal motor vehicle safety standards. You interpret the standards as requiring three specific aspects of performance, and you ask whether we agree with those interpretations. These aspects are:

"l. The turn signal flasher must be certified as meeting the FMVSS-108 requirements of a variable load turn signal flasher, over a minimum load equal to that of the vehicle turn signal load and a maximum load equal to that of the vehicle plus the trailer."

This is essentially correct. However, it is not the flasher that is certified but the vehicle in which the flasher is installed; Standard No. l08 does not require certification of original equipment lighting items, only replacement equipment items. Standard No. l08's requirements for turn signal flashers are those of SAE Standard J590b, Automotive Turn Signal Flasher, October l965, which are incorporated by reference. Under the Standard's Scope, the flashers "are intended to operate at the design load for the turn signal system as stated by the manufacturer." If a vehicle is designed for towing purposes, and its manufacturer offers an optional trailer hitch and associated wiring, then that manufacturer must equip the vehicle with a flasher capable of meeting a minimum load equal to that of the vehicle turn signal load, and a maximum load equal to that of the vehicle plus the trailer. That will be a variable load turn signal flasher. The manufacturer of the vehicle is the person responsible for ensuring that the flasher meets the vehicle's design load requirements, and that the vehicle is certified as conforming to Standard No. l08.

"2. The hazard warning signal flasher must be certified as meeting the requirements of FMVSS-l08 over a load range of 2 lamps to the combined hazard warning loads of the vehicle plus the trailer."

This is also essentially correct, and our comments are similar. Standard No. 108's requirements for hazard warning signal flashers are those of SAE Recommended Practice J945 Vehicular Hazard Warning Signal Flasher, February l966, which are incorporated by reference. The Practice's Scope specifies that the flashers "are required to operate from two signal lamps to the maximum design load . . . as stated by the manufacturer." Thus, in order for the vehicle manufacturer to certify compliance with Standard No. l08, it must equip the vehic1e with a flasher that operates over a load range of two lamps to the total hazard warning system load of the vehicle plus the trailer.

"3. The requirement to provide turn signal outage is voided due to the trailer towing capability of the vehicle."

This is correct. Under section S5.5.6 of Standard No. l08, any vehicle equipped to tow trailers and which uses a variable-load turn signal flasher is exempted from the failure indication requirements of the SAE standards on turn signals.

I hope that this answers your questions.

Sincerely,

Paul Jackson Rice Chief Counsel

ref:l08 d:8/3l/90

1970

ID: 2632o

Open

Ellen A. Lockwood, Esq.
Assistant U.S. Attorney
United States Attorney
District of Guam Suite 502-A PNB
238 O'Hara Street
Agana, Guam 969l0

Dear Ms. Lockwood:

This is in reply to your letter of September 24, l987, to Jim Marquez, the former General Counsel of this Department. You have asked about the applicability to the Commmonwealth of the Northern Marianas (CNMI) of l5 U.S.C. l38l, and l9 C.F.R. l2.80.

The National Traffic and Motor Vehicle Safety Act, l5 U.S.C. l38l et seq., as you have noted, applies to the CNMI through Section 502(a)(2) of the "Covenant to Establish the Commonwealth of the Northern Mariana Islands in Political Union with the United States," and is a "State" within the meaning of l5 U.S.C. l39l. This means that it is a violation of l5 U.S.C. l397(a)(1)(A) to import into the CNMI any motor vehicle that does not comply with all applicable Federal motor vehicle safety standards.

As authorized by l5 U.S.C. l397(b)(3), the Departments of Transportation and Treasury issued joint regulations to enforce the importation prohibition of l397(a)(l)(A). As the authority of the Customs Service is limited to the Customs Territory of the United States, these regulations apply only to "States" within this Territory. They do not apply to Guam, American Samoa, the Virgin Islands, and the CNMI, "States" that lie without the Customs Territory of the United States. It is our understanding that each of these "States" enforces l397(a)(1)(A) within its borders through an Executive Order issued by the Governor, designating an appropriate local agency for this task. In the Virgin Islands, for example, the Department of Public Safety will not register any vehicle that lacks the label required by 49 C.F.R. Part 567 Certification certifying compliance with all applicable Federal motor vehicle safety standards. I enclose representative copies of correspondence that the National Highway Traffic Safety Administration has had with the Virgin Islands and the CNMI on this subject.

Sincerely,

Erika Z. Jones Chief Counsel

Enclosures ref:MIS#VSA d:l2/30/87

1987

ID: 2632y

Open

Mr. Herr T. Spingler
Abt. K2/ELE2
Robert Bosch GmbH

FAX 07121/35-1792

Dear Herr Spingler:

This is in reply to your FAX of July l9, l990, to Richard Van Iderstine of this agency asking for confirmation of an oral interpretation provided you by Jere Medlin, Office of Rulemaking, with respect to replaceable bulb headlamps.

Motor Vehicle Safety Standard No. l08, Lamps, Reflective Devices, and Associated Equipment, defines (section S3) a replaceable bulb headlamp as "a headlamp comprising a bonded lens and reflector assembly and one or two standardized replaceable light sources." In Europe you fix the lens to the reflector assembly with a rubber seal and clips. For the U.S. market you propose to add "silicone-glue at four places between lens and housing to prevent removal of the lens." Mr. Medlin informed you that this would be a "bonded lens and reflector assembly."

The standard does not define "bonded", but the intent of the definition is that, once the lens is joined to the reflector assembly, it shall not be separable. Any method of adhesion that accomplishes this would be a sufficient bond for purposes of the definition. If the application of silicone glue at four places between the lens and the reflector assembly is sufficient to prevent manual separation of the lens from the assembly, then it would be a sufficient bond.

I hope that this answers your question.

Sincerely,,

Paul Jackson Rice Chief Counsel ref:l08 d:8/2/90

1990

ID: 2633o

Open

Mr. Robert B. Dix, Jr.
Fleet Manager
JKJ Chevrolet
Koons Plaza
2000 Chain Bridge Road
Vienna, VA 22180

Dear Mr. Dix:

This responds to your letter requesting information concerning "after market upfittings". You indicate that you intend to bid on Federal, State or County motor vehicle solicitations and it appears that a number of these solicitations contain specifications that would require "after market upfittings". You asked how our regulations would affect those "after market upfittings".

As you may know, the National Traffic and Motor Vehicle Safety Act of 1966 (15 U.S.C. 1381 et seq.) prohibits the sale or introduction into interstate commerce of any new vehicle or item of motor vehicle equipment that does not conform to all applicable Federal motor vehicle safety standards. The Safety Act authorizes NHTSA to issue these safety standards. NHTSA does not have authority to approve, endorse, or offer assurances of compliance to a manufacturer's motor vehicles or motor vehicle equipment. Rather, the Safety Act established a "self-certification" process, in which each manufacturer is responsible for certifying that its products meet all applicable safety standards.

It is not clear from your letter whether "after market upfittings" means that you will be altering motor vehicles while they are still new, i.e., before they have been sold to a consumer for the first time or that you will be making modifications to used vehicles, i.e., ones that have been purchased already. The requirements applicable to the "after market upfittings" vary, depending on whether the alteration is performed before or after the vehicle has been sold to a consumer for the first time.

I will discuss first the requirements that would apply if you modify vehicles that are new. As modified, the vehicles must continue to comply with all applicable standards, since section 108(a)(1)(A) of the Safety Act prohibits the sale of any vehicle that does not comply with all applicable Federal motor vehicle safety standards. Further, the agency's certification requirements in Part 567 of the Code of Federal Regulations applies to any person who changes previously certified vehicles by means other than the addition, substitution, or removal of readily attachable components or minor finishing operations, or in such a manner that the weight ratings assigned to the vehicle are no longer valid. Such a person is considered an "alterer" for purposes of Part 567 (copy enclosed). The person performing the modifications set forth in your letter (installing a bench seat or adding auxiliary springs) would be considered an alterer, because seats and springs are not readily attachable components.

In this situation, 49 CFR 567.7 requires that:

(1) The alterer supplement the existing manufacturer certification label by affixing an additional label stating that the vehicle as altered conforms to all applicable Federal motor vehicle safety standards as well as stating the firm or individual name of the alterer and the month and the year in which the alterations were completed (see /567.7(a)); (2) The modified values for the vehicle be provided as specified in //567.4(g)(3) and (5), if the gross vehicle weight ratings or any of the gross axle weight ratings of the vehicle as altered are different from those shown on the original certification label (see /567.7(b)); and (3) The type classification be provided, if the vehicle as altered has a different type of classification from that shown on the original certification.

In addition to these certification requirements, an alterer is considered a "manufacturer" for the purposes of notification and recall for defects or noncompliance under the Safety Act and is subject to the requirements of 49 CFR Part 573, Defect and Noncompliance Reports.

With respect to your first point, i.e., that you believe you should "(o)btain from the company doing the work a certification that the after market upfitting meets National Highway Safety Standards," the alterer is required to certify that the altered new vehicle complies with all applicable Federal safety standards.

I am not sure that I understand your second point, i.e., that if a bench seat is installed in a cargo van, the van must have a side door that can be opened from the inside. If you are speaking of an obligation to make some modification to an existing side door, the door would be governed by Standard No. 206, Door locks and door retention system (See 49 CFR 571.206). S4 of Standard 206 provides that the standard's requirements apply to "any side door leading directly into a compartment that contains one or more seating accommodations" and specifies different strength and lock requirements for different types of doors. The addition of a bench seat to what was formerly the cargo compartment would convert that compartment into one subject to S4. The safety standard does not require that the inside rear door handles be operative.

If your second point refers to an obligation to install a side door because you install a bench seat, that is not correct. The Federal motor vehicle safety standards do not impose an obligation that there be a side door in a van. With all of the preceding statements, however, you should note that section 108(c) of the Safety Act provides that compliance with our standards does not exempt any person from any liability under common law. Accordingly, you may wish to consult with a private attorney regarding any product liability concerns you may have about the operability of the door.

Your third point is that you believe that you must place "a decal, label, or some form of paperwork in the vehicle indicating the results of the upfitting." If the "after market upfittings" to which you refer are made to a new vehicle, /567.7 requires the alterer to permanently affix to the vehicle a label setting forth the information specified in that section.

Having discussed the requirements applicable to new vehicles, I now turn to discussing those applicable to used vehicles. If the "after market upfittings" are modifications to used vehicles (in this case, vehicles sold and delivered to a public authority), section 108(a)(2)(A) of the Safety Act applies. This section prohibits any manufacturer, distributor, dealer or motor vehicle repair business from knowingly rendering inoperative any equipment or element of design installed on a vehicle in compliance with our standards. Thus, neither your dealership nor any company that is a repair business or manufacturer can alter legally any vehicle that complies with all applicable Federal motor vehicle safety standards when you receive it (as certified on the motor vehicle by the original manufacturer), in such a way that the vehicle no longer complies with the applicable safety standards.

If the vehicles in question are used vehicles at the time of their modification, the company performing the modifications is not required to provide a separate certification, as discussed in your points 1 and 3. Since you, as the dealer, may be held responsible under section 108(a)(2)(A) for any rendering inoperative by a company acting as your agent, you may wish to get written assurances from the modifier that it has made the modifications in a manner which will not take the vehicle out of compliance with the Federal motor vehicle safety standards. However, that matter is left for your dealership and the modifier to resolve.

As an aid to helping you determine which standards may apply to the modified vehicles, I am enclosing a publication entitled "Federal Vehicle Safety Standards and Procedures." This pamphlet indicates which standards apply to which vehicle types. I also have enclosed a general information sheet for new manufacturers that gives a general description of the applicable regulations, and explains how to get copies of those regulations. I hope this information proves helpful. Please contact this agency again if we can be of further assistance.

Sincerely,

Erika Z. Jones Chief Counsel

Enclosures ref:VSA:567 d:12/29/87

1987

ID: 2633y

Open

Mr. Roman L. Cepeda
P.O. Box 3571
Agana, Guam 96910

Dear Mr. Cepeda:

This is in reply to your letter of July 24, l990, to Frank Berndt, the former Chief Counsel of this agency. You wish to import 8 to 12 stainless steel parts. After importation, the parts would be put together to form a Jeep body. Ultimately, an engine, chassis, and all other parts, which are from Guam, would be added to form a completed motor vehicle.

You have asked for confirmation that "the stainless steel jeep body is not a motor vehicle and is not required to meet any provision of the U.S. 49 CFR Part 400 to 999." Apparently, you are having a misunderstanding with Guam Customs on this point.

We are pleased to provide confirmation of your interpretation. There are no Federal motor vehicle safety standards that apply to the stainless steel body parts that you describe. This means that you may import them, as individual body parts, into Guam without violating the National Traffic and Motor Vehicle Safety Act. Under 49 CFR 591.5(i)(2), the appropriate declaration for entry is that they were manufactured on a date when no Federal motor vehicle safety standards were in effect that applied to them.

Sincerely,

Paul Jackson Rice Chief Counsel ref:59l d:8/29/90

1990

ID: 2634o

Open

Lawrence C. Bourbeau, Jr., Esq.
Assistant General Counsel
Fruehauf Corporation, Law Department
10900 Harper Avenue
P.O. Box 238
Detroit, MI 48232

Dear Mr. Bourbeau:

This letter responds to your earlier inquiry where you ask whether NHTSA would object to your Company's changing "its model year designation from September 1 to July 1." I apoligize for the delay in responding.

Standard 115, Vehicle Identification Number- Basic Requirements, directs vehicle manufacturers to place a discrete identifying number (VIN) on each vehicle. Title 49 CFR Part 565, VIN- Content Requirements, states that a VIN must include a character indicating the manufacturer's designated model year. Neither Standard 115 nor Part 565 prohibits your company from changing the model year in the manner you suggest. Therefore, such a change does not violate our regulations.

We note that this change apparently concerns model year as a marketing concept. The Federal Trade Commission has published guidelines concerning model year as a commercial concept, and you may wish to contact the Commission for whatever assistance it may provide. I hope you find this information helpful.

Sincerely,

Erika Z. Jones Chief Counsel

ref:115 d:12/22/87

1987

ID: 2634y

Open

Mr. Reese Chappell
Engineer
Auto Ventshade Company
3571 Broad Street
Chamblee, Georgia 30341

Dear Mr. Chappell:

Thank you for your letter asking how Federal regulations would apply to a product called a "Ventvisor" manufactured by your company. You enclosed a brochure that included pictures of the Ventvisor. Described as a rain deflector, the Ventvisor appears to be a strip of molded tinted glazing material several inches wide that is secured on the window frame and running from the front around the top of side windows on motor vehicles. I am pleased to have this opportunity to explain how the requirements of this agency apply to this product.

Some background information about the agency may be useful. NHTSA has the authority under the National Traffic and Motor Vehicle Safety Act to issue safety standards applicable to new motor vehicles and new items of motor vehicle equipment. NHTSA, however, does not approve motor vehicles or motor vehicle equipment, nor do we endorse any commercial products. Instead, the Act establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet our safety standards. The agency periodically tests vehicles and equipment items for compliance with the standards, and also investigates other alleged safety-related defects. I have enclosed an information sheet that briefly describes manufacturers' responsibilities under the Safety Act and how to obtain copies of this agency's standards and regulations.

Your company's product is described as made of "acrylic" and would appear to overlap a portion of the side windows of motor vehicles that are "requisite for driving visibility." Accordingly, this product would be a glazing material for use in motor vehicles and would be subject to the requirements of Standard No. 205, Glazing Materials (49 CFR 571.205). Standard No. 205 specifies performance requirements for various types of glazing and also the locations in vehicles in which each type of glazing may be used. The standard also incorporates by reference "ANS Z26," the American National Standards Institute's Safety Code for Safety Glazing Materials for Glazing Motor Vehicles Operating on Land Highways. Standard No. 205 permits devices such as your company's Ventvisor to be manufactured out of either Item 1, Item 2, Item 4, Item 10, or Item 11 glazing materials (the various types of glazing are designated as "Items" in Standard 205). Your company's use of acrylic would appear to be acceptable since this type of rigid plastic could have an Item 4 rating, and Item 4 glazing may be used as a wind deflector on the side window of any vehicle.

You should note that all Item 4 glazing must comply with Test No. 2 in ANS Z26, which requires the material to have a light transmittance of not less than 70 percent. Your letter noted that one version of your Ventvisor is not tinted, while another version is tinted so that it has 47.5 percent light transmittance. This tinted version of the Ventvisor would appear to not comply with the light transmittance requirements of Standard No. 205. The standard also sets forth additional performance requirements for Item 4 glazing, as well as marking requirements for the glazing. If your company determines that the Ventvisor complies with the requirements of Standard No. 205, it may certify each Ventvisor in accordance with the provisions of S6 of Standard No. 205.

Section 108(a)(1)(A) of the Safety Act provides 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 item of new motor vehicle equipment unless the equipment complies with all applicable safety standards and is so certified by its manufacturer. It would be a violation of this section of Federal law for any person to manufacture or sell the Ventvisor or any other glass or plastic wind deflector to be mounted on front side windows, unless those products comply with all requirements of Standard No. 205. Federal law provides for a civil penalty of up to $1,000 for each such violation.

Manufacturers of motor vehicle equipment, such as the Ventvisor, also have responsibilities under the Safety Act for any defects related to motor vehicle safety that are determined to exist in their products. The Safety Act requires such manufacturers to notify purchasers about any defects related to motor vehicle safety and to remedy such defects free of charge.

I hope this information is helpful. If you have any further questions or need any additional information about this topic, please feel free to contact Dorothy Nakama of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

Paul Jackson Rice Chief Counsel /ref:205#VSA d:8/2/90

1990

ID: 2635o

Open

Frank S. Perkin, Esq.
Assistant General Counsel
The Budd Company
Law Department
3l55 West Big Beaver Road
Box 260l
Troy, Michigan 48084

Dear Mr. Perkin:

This responds to your letter expressing concern about a statement in one of our interpretation letters, which you believe could be read as condoning the practice of rebuilding wheels by processes which include heating and welding. As discussed below, our letter's reference to remanufacturing wheels was made only to serve as an illustrative example and was not intended to address either the safety of such processes or the relevant regulations of other Federal agencies.

The interpretation letter in question is one that we sent on September 22, l986, to Steven R. Taylor, responding to a request concerning regulations that apply to manufacturers of reconditioned brake drums. The letter included the following paragraph:

NHTSA has in the past considered the issue of what types of operations make a person a manufacturer with respect to retreaded tires and remanufactured wheels. A person who retreads tires is considered to be a manufacturer under the Vehicle Safety Act. The retreading process involves significant manufacturing operations, which do not differ substantially from those of manufacturing new tires. By contrast, a person who remanufactures wheels is not considered to be a manufacturer under the Vehicle Safety Act. The process of remanufacturing wheels consists of such things as straightening, re-welding parts, and repairing cracks by welding. These types of actions are not significant manufacturing operations, but instead are the type of operations commonly performed in repair shops.

You stated that all of the things mentioned in our letter, i.e., straightening, re-welding parts and repairing cracks by welding, are specifically prohibited by the OSHA standard applicable to truck wheels, both multi and single piece. You also stated that the "out of service" criteria adopted by the Bureau of Motor Carrier Safety mandate that a vehicle be placed out of service if welded repairs are found on certain disc wheels. According to your letter, any significant changes made after the manufacture of a steel truck wheel, especially involving bending, heating or welding, carry a significant risk of rendering the wheel unsafe.

As is indicated from the context of our September 22, l986 interpretation letter, the reference to remanufacturing wheels was made solely for the purpose of providing an illustrative example and was not intended to address either the safety of such processes or their permissibility or impermissibility under the relevant regulations of other Federal agencies. I would note that NHTSA has long taken the position that remanufactured wheels are considered to be used wheels instead of new wheels for purposes of Federal motor vehicle safety standards. See, for example, our November 28, l973 letter addressed to Mr. L. Clinton Rich and February 7, l983 letter to Mr. H. J. Lindekugel (copies enclosed). Again, however, these letters do not purport to address the safety of remanufacturing wheels or the relevant regulations of other Federal agencies.

We appreciate your bringing to our attention your concern about the safety of remanufactured wheels. Copies of this correspondence are being placed in the public docket.

Sincerely,

Erika Z. Jones Chief Counsel

Enclosures ref:VSA#110#120 d:1/22/88

1988

ID: 2635y

Open

Mr. David J. Blackwell
Operations Manager
Liquidus Limited
37A Shorncliffe Road
Toronto, Ontario
48Z 5K2, Canada

Dear Mr. Blackwell:

This is in response to your letter asking whether a certain vehicle that you plan to export to the United States would be subject to the Federal Motor Vehicle Safety Standards. You state that Liquidus has "designed a system" by customizing an existing road tanker for "overhead" loading. The vehicle you plan to export would be used for "aircraft de-icing storage" and "loading of aircraft de-icing tarmac vehicles while in a fixed location." The road tanker used in your system was originally built in Canada by a firm that has since gone out of business. I am pleased to have this opportunity to explain our statute and regulations to you.

The National Traffic and Motor Vehicle Safety Act (15 U.S.C. 1381 et seq.; the Safety Act) authorizes this agency to issue safety standards for new "motor vehicles" and new items of "motor vehicle equipment." Accordingly, your vehicle is subject to the safety standards only if it is considered within the definition of "motor vehicle" under the Safety Act. Section 102(3) of the Safety Act (15 U.S.C. 1391(3)) defines a "motor vehicle" as

any vehicle driven or drawn by mechanical power manufactured primarily for use on the public streets, roads, and highways, except any vehicle operated exclusively on a rail or rails.

We have interpreted this language as follows. Vehicles that are equipped with tracks or are otherwise incapable of highway travel are plainly not motor vehicles. Tractors and other agricultural equipment are also not motor vehicles. Further, vehicles designed and sold solely for off-road use (e.g., certain airport runway vehicles and underground mining vehicles) are not considered motor vehicles, even though they may be operationally capable of highway travel. In addition, items of mobile construction equipment which use the highways only to move between job sites and which typically spend extended periods of time at a single job site are not considered motor vehicles.

On the other hand, vehicles that use the public roads on a necessary and recurring basis are motor vehicles. For instance, utility vehicles like the Jeep are plainly motor vehicles, even though they are equipped with special features to permit off-road operation. If a vehicle's greatest use will be off-road, but it will spend a substantial amount of time on-road, NHTSA has treated it as a motor vehicle. Further, if a vehicle is readily usable on the public roads and is in fact used on the public roads by a substantial number of owners, NHTSA has treated the vehicle as a motor vehicle. This finding was made with respect to dune buggies, notwithstanding the manufacturers' statements that the vehicles were not intended to be used on the public roads.

NHTSA has also stated in many prior interpretations that even vehicles that will regularly be used on the public roads will not be considered motor vehicles for the purposes of the Safety Act, if the vehicles have a maximum attainable speed of 20 miles per hour (mph) or less and have an abnormal configuration that readily distinguishes them from other vehicles on the road.

We would apply these principles to the vehicle identified in your letter as follows. Your letter stated that this vehicle will be immobilized after it reaches the airport. Assuming this immobilization occurs, this vehicle would appear to be designed and sold solely for off-road use, just like certain other airport runway vehicles. In this case, it would not be a motor vehicle, even though it is operationally capable of highway travel before the immobilization.

However, if the vehicle were not subsequently immobilized, and were moved from airport to airport with only a limited stay at any job site, this vehicle might be considered a "motor vehicle." This conclusion would be even more likely if a significant percentage of the vehicle's purchasers were to use the vehicle by moving it from airport to airport, notwithstanding your company's intent that the vehicles not be so used. This situation would be analogous to the classification of dune buggies.

I hope that this information is helpful. If you have any additional questions, please contact John Rigby of this office by mail at the above address or by telephone at 202-366-2992.

Sincerely,

Paul Jackson Rice Chief Counsel /ref:VSA d:8/20/90

1990

ID: 2636o

Open

The Honorable Harris W. Fawell
House of Representatives
Washington DC 20515

Dear Mr. Fawell:

I have been asked to respond to your recent letter asking the Department of Transportation to provide you with information concerning the use of safety belts on school buses. You ask for this information on behalf of your constituent, Mr. Wayne Mann, in the Illinois Palos Community Consolidated Schools. Mr. Mann specifically seeks "factual information relative to seat (lap) belts on school buses," and information on funding for traffic safety programs involving hazardous conditions outside the school bus.

I would like to begin with some background information on our school bus regulations. The National Highway Traffic Safety Administration (NHTSA) is responsible for developing safety standards applicable to all new motor vehicles, including school buses. In 1977, we issued a set of motor vehicle safety standards regulating various aspects of school bus performance. Among those standards is Standard 222, School Bus Passenger Seating and Crash Protection. Standard 222 requires large school buses (those with a gross vehicle weight rating over 10,000 pounds) to have passenger crash protection through a concept called "compartmentalization."

Compartmentalization requires large school buses to incorporate certain protective elements into the vehicles' interior construction, thereby reducing the risk of injury to school bus passengers without the need for safety belts. These elements include high seats with heavily padded backs and improved seat spacing and performance. (Our regulations require a safety belt for the school bus driver because the driver's position is not compartmentalized. Further, because small school buses experience greater force levels in a crash, passengers on these vehicles need the added safety benefits of the belts.)

School buses continue to have one of the lowest fatality rates for any class of motor vehicle. Large school buses are among the safest motor vehicles because of their size and weight (which generally reduce an occupant's exposure to injury-threatening crash forces); the drivers' training and experience; and the extra care other motorists take when they are near a school bus. For these reasons, NHTSA has not required safety belts in large school buses.

I enclose a copy of a June 1985 NHTSA publication titled "Safety Belts in School Buses," which discusses many of the issues relative to this subject. I think your constituent may find this information helpful.

With respect to hazardous conditions outside the school bus, the agency realizes that there are special problems of driver visibility associated with transporting students. NHTSA has addressed these problems in Federal Motor Vehicle Safety Standard 111, Rearview mirrors, paragraph S9. In 1975, NHTSA established special mirror requirements for school buses "to reduce the danger of death or injury to school children (by giving) the school bus driver the fullest possible view of all sides of the vehicle..." (The proposed rule, including this preamble quotation, appears at 40 FR 33828, 33829, August 12, 1975. The final rule was published originally at 41 FR 36023, August 26, 1976.) One of these special requirements is that manufacturers equip a school bus with a crossview mirror that permits the driver to see the area in front of the bus. These special school bus mirror requirements help contribute to the low number of fatalities associated with school bus travel.

Your constituent also mentions funding to implement a program to address hazardous conditions outside the school bus. The agency believes that its school bus regulations effectively address the safety of school bus design and performance, and contribute to occupant safety.

We note, however, that /402 of the Highway Safety Act, provides funds to each State for its use in conducting a highway safety program. Some of these funds are distributed by the State to local governments or organizations within the State. To get information on Illinois' /402 funds, I suggest that your constituent contact the Illinois Governor's Representative for Highway Safety, Mr. Melvin H. Smith, Director, Division of Traffic Safety, 319 Administration Bldg., 2300 South Dirksen Pkwy., Springfield, IL 62764.

If you or Mr. Mann have further questions, I encourage you to contact our agency.

Sincerely,

Erika Z. Jones Chief Counsel Enclosure ref:111#222 d:1/12/88

1988

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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