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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 9951 - 9960 of 16516
Interpretations Date

ID: 9696

Open

Mr. Thomas Turner
Manager, Engineering Services
Blue Bird Body Company
P.O. Box 937
Fort Valley, GA 31030

Dear Mr. Turner:

This responds to your letter to NHTSA's Office of Vehicle Safety Compliance requesting an interpretation of the conspicuity requirements in Standard No. 131, School Bus Pedestrian Safety Devices. This letter confirms your understanding that a reflectorized stop signal arm that fully complies with the reflectorization requirements in S5.3.1 complies with S5.3, regardless of whether a stop signal arm is equipped with strobe lights that do not comply with S5.3.2.

As you are aware, S5.3 Conspicuity states "The stop signal arm shall comply with either S5.3.1 or S5.3.2, or both." Section S5.3.1 sets forth requirements addressing reflectorization, and S5.3.2, which references S6.2, sets forth requirements addressing flashing lamps. Section S6.2.2 specifies a stop signal arm's flash rate.

You explained that some of the stop signal arms that you install fully comply with the reflectorization requirements in S5.3.1. However, these stop signal arms are also equipped with strobe lights that do not comply with S5.3.2 because they do not comply with the flash rate requirements in S6.2.2.

As we noted above, compliance with the conspicuity requirements in S5.3 can be established by complying with either the reflectorization requirements in S5.3.1 or the flashing light requirements in S5.3.2. (emphasis added) Since the stop signal arms in question comply with the reflectorization requirements, they comply with the conspicuity requirements and need not comply with the flashing light requirements.

I hope this information is helpful. If you have any questions about NHTSA's safety standards, please feel free to contact Marvin Shaw at this address or by telephone at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel ref:131 d:4/8/94

1994

ID: 9697

Open

Mr. Jeffrey D. Shetler
Manager of Government Relations
Kawasaki Motors Corp. U.S.A.
P.O. Box 25252
Santa Ana, CA 92799-5252

Dear Mr. Shetler:

This is in reply to your letter of February 7, 1994, to the Associate Administrator for Enforcement requesting an interpretation of Federal Motor Vehicle Safety Standard No. 108. So that we may serve you better in the future, please note that the Office of Chief Counsel is the one to which requests for interpretations should be addressed.

You have asked whether the "proposed application of a projector beam headlamp to a motorcycle" will meet the requirements of Standard No. 108. In this headlamp "the projector beam (lower beam) is located on the left side and the high beam is on the right side." You continue by saying that "the outer lens of the headlamp assembly is symmetrically positioned about the vertical centerline," and you ask whether the headlamp complies with the requirements of Table IV of Standard No. 108.

Table III of Standard No. 108 requires a motorcycle to have at least one headlamp. Table IV requires the headlamp to be located "on the vertical centerline, except that if two are used they shall be symmetrically disposed about the vertical centerline." The device you describe contains the upper and lower beams in one housing and hence is a single headlamp. Although your projector beam headlamp would be mounted literally on the vertical centerline, the beams provided by the headlamp are located on either side of the centerline and are therefore asymmetrical in relation to the centerline of the motorcycle when either beam is activated. A redesign of the lamp so that its vertical centerline becomes its horizontal centerline and Line A becomes the vertical centerline would be a configuration that meets Table IV since both beams of the single headlamp would then be located on the vertical centerline. SAE J584 does not specify the location of one beam in relation to the other for dual beam motorcycle headlamps, i.e. whether one beam is to be mounted above or below the other.

Your second question concerns an interpretation of S5.1.1.23. This paragraph provides an alternative for motorcycles to the headlamps specified by Table III, and allows a motorcycle to be equipped with "one half of any headlighting system specified in S7 which provides both a full upper beam and full lower beam, and where more than one lamp must be used, the lamps shall be mounted vertically, with the lower beam as high as practicable." You have asked whether this means that your proposed headlamp "shall be mounted on the upper half and the high beam shall be on the lower half when using one half of any headlighting system specified in S7," or "is our proposed layout in the attachment acceptable?"

As I have explained, your proposed layout in the attachment is not acceptable under Table IV without reorientation. The headlighting systems specified in S7 are those intended for four-wheeled motor vehicles (other than trailers). As we understand it, your proposed headlamp has been developed as a headlamp system for motorcycles and not as half of a headlamp system for vehicles other than motorcycles. Because motorcycle photometrics differ from those for vehicle other than motorcycles, your proposed headlamp could not be half of a system specified in S7 which may be used on motorcycles as an alternative to the headlamps specified by Table III.

Sincerely,

John Womack Acting Chief Counsel

ref:108 d:5/6/94

1994

ID: 9709

Open

Air Mail

Mr. Jerry Steffy Triumph Designs Ltd. Jacknell Road Dodwells Bridge Industrial Estate Hinckley, Leicestershire LE10 3BS England

Dear Mr. Steffy:

This responds to your request to Mr. David Elias, formerly of this office, for an interpretation concerning whether a motorcycle certification label may be placed in a location other than that specified in 49 CFR Part 567, Certification. As explained below, the answer is yes, the agency has permitted an alternative location in certain circumstances.

49 CFR '567.4(e) states that motorcycle certification labels "shall be affixed to a permanent member of the vehicle as close as is practicable to the intersection of the steering post with the handle bars, in a location such that it is easily readable without moving any part of the vehicle except the steering system." In your letter, you seem to refer to this intersection as the "headstock area," and ask whether the certification label can be placed elsewhere.

In an interpretation letter of November 23, 1982, to Suzuki Motor Co., Ltd., (copy enclosed) NHTSA permitted the motorcycle certification label to be placed "on the down tubes in front of the engine on either the right or left side." The agency permitted the alternate location because some Suzuki motorcycles were equipped with fairings, obscuring labels placed in the specified location.

Your inquiry seems to imply that Triumph's design would cause a certification label placed in the location specified in '567.4(e) to be obscured. If that is the case, please contact Mr. George Shifflett of NHTSA's Office of Vehicle Safety

Compliance at (202) 366-5307. NHTSA would be happy to work with you on finding an alternative location for your certification label.

I hope this information is helpful. If you have any further questions, please contact Ms. Dorothy Nakama of my staff at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

Enclosure

ref:567 d:6/9/94

1994

ID: 9711

Open

Mr. Shih-Chiang Chen
President
Top World Traffic Equipments Co., Ltd.
7F-1. No/ 286-9, Hsin Ya Road
Chien Chen Dist.
Kaohsiung
Taiwan R.O.C.

Dear Sir:

This is in reply to your letter of June 15, 1995, to the Department of Transportation regarding your invention, the "brake condition warning sensor." You ask whether such an invention is permissible in this country.

The sensor causes flashing in "the third brake light" keyed to the rate of deceleration.

Under the Federal regulations in the United States, motor vehicles must be manufactured so that the third brake light (or "center highmounted stop lamp" as we call it) and all other stop lamps are steady-burning when they are in use.

After the vehicle is sold, Federal law prohibits any manufacturer, dealer, distributor, or motor vehicle repair business from installing the sensor to modify the performance of the third brake light and cause it to flash.

However, Federal law does not prohibit the owner of the car from installing the sensor. In this circumstance, the law of the State in which the vehicle is operated must be consulted to determine whether a flashing third brake light is permissible. We are not able to answer questions about State laws. If you wish an opinion on State laws governing flashing third brake lights, you should write the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard, Arlington, Va. 22203.

If I can be of further assistance, please contact me or Mr. John Womack Acting Chief Counsel (202) 366-9511.

Sincerely,

Ricardo Martinez, M.D.

ref:108 d:7/19/95

1995

ID: 9719

Open

Mr. Thomas D. Turner
Manager, Engineering Services
Blue Bird Body Company
P.O. Box 937
Fort Valley, GA 31030

Dear Mr. Turner:

This responds to your letter of February 21, 1994, requesting further clarification of the requirements of S5.5.3(c) of Standard No. 217, Bus Emergency Exits and Window Retention and Release (as amended at 57 FR 49413; November 2, 1992). Section S5.5.3(c) states that "(e)ach opening for a required emergency exit shall be outlined around its outside perimeter with a minimum 3 centimeters wide retroreflective tape."The July 7, 1993 letter also stated that the agency planned to issue a correction notice of the November 2, 1992 rule that would specify a minimum size of 2.5 cm for the tape. This notice has not yet been published. Until the correction is issued, NHTSA will not take enforcement measures regarding tape size against a manufacturer who uses 1 inch wide retroreflective tape. Your letter referenced our July 7, 1993 letter to you in which we stated that S5.5.3(c) permits interruptions in the tape necessary to accommodate curved surfaces and functional components. You requested confirmation "that retro-reflective tape around the perimeter of the rear of a school bus can be used to satisfy the requirements of S5.5.3(c)."

I cannot interpret the requirements of S5.5.3(c) as you request, since for many, if not most, designs the nearest possible location will be closer than the perimeter of the bus. While we appreciate your concerns about durability if numerous cuts or notches are made to accommodate rivets, our July 7 letter stated that manufacturers have the option of placing the retroreflective tape immediately adjacent to the rivets, rather than over the rivets. As an example, from the illustrations you enclosed, it appears that it may be possible to apply retroreflective tape outside the rivets adjacent to the lower portions of the door. Thus, that would be the nearest possible location, rather than the perimeter of the bus itself. I note, however, that the illustrations do not provide sufficient detail of all obstructions for us to determine the nearest possible location for each design.

I also note that your letter stated in support of your request that all school buses are required to have a rear emergency exit. While this is true, the type of emergency exit will vary and retroreflective tape at the perimeter of the exit would allow rescuers to immediately know the precise location of the exit. Moreover, retroreflective tape at the perimeter would enable rescuers to immediately know which type of exit is in this location. This information could be vitally important. Because push-out windows are not required to have a means of releasing the exit from outside the bus (S5.3.3.2), this information would allow rescuers to quickly determine that they should move to the sides of the bus to locate an exit they can open.

Your letter asked the agency to treat it as a petition for rulemaking if we did not interpret the standard as you requested. You will be notified of our decision to grant or deny your petition.

I hope you find this information helpful. If you have any other questions, please contact us at this address or by phone at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

ref:217 d:3/28/94

1994

ID: 9730

Open

Mr. Blair Abraham
Biomedical Manager
Mersco Medical
P.O. Box 5061
Sioux Falls, SD 57117

Dear Mr. Abraham:

This responds to your letter requesting information about "the steps to take to certify a vehicle for a higher weight rating than what is issued by the manufacturer." I apologize for the delay in our response. As discussed in your letter and in a telephone conversation with Edward Glancy of my staff, your company owns a 1989 or 1990 Chevy van which it uses to deliver products. You indicate that the GVWR assigned to the vehicle is 5,600 pounds. You modified the suspension to enable the vehicle to handle an additional 1,000 pounds and "would like to certify the vehicle for 6,600 pounds." You asked us to send the information required for increasing the GVWR and also ask, if you cannot increase the GVWR, whether you are liable for noncompliance of a DOT regulation.

By way of background information, under the National Traffic and Motor Vehicle Safety Act, the National Highway Traffic Safety Administration (NHTSA) issues safety standards for new motor vehicles and new motor vehicle equipment. Manufacturers are required to certify that their vehicles and equipment meet applicable safety standards.

Under NHTSA's certification regulations, manufacturers must assign a GVWR to new vehicles. The term GVWR is defined in 49 CFR Part 571.3 as "the value specified by the manufacturer as the loaded weight of a single vehicle." The GVWR informs vehicle owners how heavily the vehicle may safely be loaded. It also affects the vehicle's loading and other test conditions for the performance tests to ascertain whether the vehicle complies with applicable safety standards. NHTSA expects the GVWR to reflect a manufacturer's good-faith evaluation of the vehicle's size, weight, load carrying capacity, and intended use.

NHTSA's regulation on GVWR only addresses the GVWR of new vehicles. This is because the agency's safety standards apply only to new motor vehicles and new motor vehicle equipment. There is a provision, '108(a)(2)(A), in the Vehicle Safety Act

that prohibits manufacturers, distributors, dealers and motor vehicle repair businesses from knowingly rendering inoperative in whole or in part any device or element of design installed in accordance with a Federal motor vehicle safety standard. These parties would be subject to this provision if they were to modify your vehicle's suspension. However, the provision does not apply to individual owners modifying their own vehicles.

Because we do not regulate how individuals modify their own vehicles (and thus do not prohibit you from modifying your vehicle's suspension), we are unable to advise you about the specific modifications that must be made to a vehicle for it to safely carry an additional 1,000 pounds. Among other things, however, you should carefully evaluate whether the vehicle's axles, brakes, tires, and frame can adequately handle the additional load. We suggest that you consult with the original vehicle manufacturer about this question. You may also wish to consult a local attorney concerning possible liability in the event your vehicle is involved in an accident.

Also, the individual states have the authority to regulate used vehicles, and changes in the GVWR of used vehicles may be addressed by state law. State law may also address the operation of a vehicle loaded above GVWR.

I hope this information is helpful. If you have any further questions about NHTSA's regulations, please feel free to contact Mr. Glancy at this address or by telephone at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

ref:567 d:6/30/94

1994

ID: 9731

Open

Mr. Gilbert Gallahar
Kings Environmental Hydrogen Systems
P.O. Box 713
Marana, AZ 85653

Dear Mr. Gallahar:

This responds to your letter requesting information about Federal requirements applicable to an on-board hydrogen generator used on an internal combustion engine to control exhaust emissions. I am pleased to have this opportunity to explain our regulations to you.

By way of background, NHTSA is authorized by the National Traffic and Motor Vehicle Safety Act (Safety Act) to issue Federal motor vehicle safety standards (FMVSSs) that set performance requirements for new motor vehicles and new items of motor vehicle equipment, including an on-board hydrogen generator.

NHTSA has not issued any standards for a device such as yours. Nevertheless, there are other Federal laws that indirectly affect the manufacture and sale of your product. You as the product's manufacturer are subject to the requirements in sections 151-159 of the Safety Act concerning the recall and remedy of products with defects related to motor vehicle safety. In the event that the manufacturer or NHTSA determines that the product contains a safety related defect, the manufacturer would be responsible for notifying purchasers of the defective equipment and remedying the problem free of charge.

Please note that no FMVSS would preclude the installation of your product as an item of original equipment. Nevertheless, if your device were installed on a new vehicle by a vehicle manufacturer or an alterer before the first consumer purchase, then they would have to certify that the vehicle complies with all applicable standards, including Standard No. 301, Fuel System Integrity.

A commercial business that installs the on-board hydrogen generator would also be subject to provisions of the Safety Act that affect modifications of new or used vehicles. Section 108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)) provides that:

No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative, in whole or in part, any device or element of design installed on or in a motor vehicle ... in compliance with an applicable Federal motor vehicle safety standard.

This means that a manufacturer, distributor, dealer, or motor vehicle repair business must not install your device if the system renders inoperative the vehicle's compliance with the FMVSSs. For instance, compliance with FMVSS No. 301 might be degraded if the hydrogen generator affected the integrity of a motor vehicle fuel system. Any violation of this "render inoperative" prohibition would subject the violator to a potential civil penalty of up to $1,000 for each violation.

Please note also that the render inoperative prohibition does not apply to modifications that vehicle owners make to their own vehicles. Thus, Federal law would not apply in situations where individual vehicle owners install an on-board hydrogen generator in their own vehicles, even if the installation were to result in the vehicle no longer complying with the safety standards. However, NHTSA encourages vehicle owners not to degrade any safety device or system installed in their vehicles. In addition, individual States have the authority to regulate modifications that individual vehicle owners may make to their vehicles, so you might wish to consult State regulations to see whether your device would be permitted.

You may wish to contact the Environmental Protection Agency for any questions concerning emissions and air quality. The general telephone number for the EPA is (202) 382-2090. You may also wish to contact the state of Arizona for information on its emissions testing regulations.

I hope this information is helpful. If you have any more questions about NHTSA's safety standards, please contact Marvin Shaw of my staff at this address or by telephone at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

Enclosure

ref:301 d:5/18/94

1994

ID: 9753a

Open

Mr. J. L. Steffy
Triumph Designs Ltd.
Jacknell Road
Dodwells Bridge Industrial Estate
Hinckley, Leicestershire LE10 3BS
England

Dear Mr. Steffy:

This responds to your request for an interpretation of model year designations specified in 49 CFR part 565 Vehicle Identification Number - Content Requirements. You asked whether the vehicle identification number (VIN) for a 1994 model year vehicle may use the symbol "P" to designate model year. The answer is no.

You stated that Triumph wishes to use, in its VIN, a letter code designating the year of vehicle manufacture. Triumph marks the letter "P" in the VIN of a vehicle manufactured in November 1993. Triumph considers this a MY 1994 vehicle.

The format for VIN content information is specified in part 565. Table VI of part 565 specifies that MY 1993 is designated by the letter "P" and MY 1994 is designated by the letter "R." Designating a MY 1994 vehicle with the letter "P," as you wish to do, could engender confusion since it would represent that the vehicle is a MY 1993 vehicle. Such confusion could hinder the accuracy and efficiency of vehicle recall campaigns.

You also asked if Triumph may be permitted a modification of the part 565 model year designations and designate its MY 1994 vehicles as "P." The answer is no. NHTSA has no procedures to permit manufacturers to modify or waive any of part 565.

We note that Triumph could use the letter "P" to designate the vehicle as a 1993 MY vehicle. Section 565.3(h) defines "model year" as:

the year used to designate a discrete vehicle model irrespective of the calendar year in which the vehicle was actually produced, so long as the actual period is less than two calendar years.

Assuming the actual production period of the vehicle is less than two calendar years, a vehicle manufactured in November 1993 could be a MY 1993 vehicle, identified by the letter "P."

I hope this information is helpful. If you have any questions, please contact Dorothy Nakama of my staff at this address or at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

ref:565 d:3/29/94

1994

ID: 9758

Open

Ms. Denise Davis
3177 Lotheridge Rd.
Gainesville, GA 30501

Dear Ms. Davis:

This responds to your letter asking for help in a matter involving window tinting on your car. I apologize for the delay in responding.

You explain in your letter that you asked a window tinting store for a sticker showing that the tint on your windows met Georgia law. The store informed you that it cannot issue you a sticker because your windows only allow 20 percent sunlight through, and the new law requires 35 percent. To get a sticker, you would have to remove the tint, which you explain will be costly. You also state that your windows were tinted seven years ago when you purchased your car, and at the time you had your windows tinted, you were "not breaking any law."

I regret that we cannot help you pay to have the tint removed. The primary purpose of this agency is to regulate the manufacture and sale of new motor vehicles and new motor vehicle equipment. We have no authority to provide funds to citizens to help them correct problems with their vehicles or equipment. Please bear in mind that the "35 percent" law was adopted by Georgia to regulate the operation of vehicles. Thus, we suggest that you contact the Georgia Department of Motor Vehicles for information about this matter.

We appreciate your efforts to reduce the tint on your vehicle and are sorry that we are unable to assist you. If you have any other questions, please contact Mr. Marvin Shaw of my staff at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

ref:205 d:8/9/94

1994

ID: 9759

Open

Spectrum Engineering Group
1111 South Main Street
Cheshire, CT 06410

Dear Sir/Madam:

This responds to your letter to this office regarding your reconstruction of an accident involving a 16- passenger school bus. I apologize for the delay in responding.

You stated in your letter that the original latch/hinge mechanism of the right front entrance door of the bus in question was disabled by removal of the striker plate and equipped instead with a remote door opening/closing apparatus and latching mechanism. The bus was involved in an accident in which the driver was ejected through that door. You then asked a series of questions concerning the classification of the vehicle and the Federal safety standards pertaining to the door in question.

By way of background, the National Traffic and Motor Vehicle Safety Act, 15 U.S.C. 1381, et seq. (Safety Act), authorizes the National Highway Traffic Safety Administration (NHTSA) to issue Federal motor vehicle safety standards (FMVSS) applicable to new motor vehicles and new items of motor vehicle equipment. The Safety Act establishes a self-certification system in which manufacturers are responsible for certifying that the vehicle or equipment complies with all applicable FMVSSs in effect on the date of manufacture. Once the vehicle or equipment has been sold to the first customer for purposes other than resale, Federal jurisdiction over the manufacture and sale of the vehicle or equipment generally terminates and use of the vehicle or equipment becomes a matter of state jurisdiction.

You first asked, "Would this vehicle be classified as a multi-purpose passenger vehicle, a bus, or a school bus?"

The answer to your question is that each manufacturer classifies its vehicles in accordance with the definitions set

forth in the Safety Act and in NHTSA's regulations. The Safety Act defines a "school bus" as [A] passenger motor vehicle which is designed to carry more than 10 passengers in addition to the driver, and which the Secretary determines is likely to be significantly used for the purpose of transporting primary, preprimary, or secondary school students to or from such schools or events related to such schools. 15 U.S.C. 1391(14).

Our regulations define a "bus" as a motor vehicle designed to carry more than 10 persons, and further define a "school bus" as a bus that is sold for purposes that include carrying students to and from school and related activities, but does not include a bus sold for operation as a common carrier in urban transportation. 49 CFR '571.3.

Thus, whether a vehicle is a school bus under our regulations depends on the purpose for which it was originally sold. Although you did not indicate who purchased the bus originally and for what purpose, you referred to the vehicle in your letter as a "mini school bus," you stated that the body was manufactured by Mid Bus, a school bus manufacturer, and the descriptive literature you enclosed with your letter depicts different models of small school buses manufactured by Mid Bus. Accordingly, it appears the vehicle in question would have been classified as a school bus under 49 CFR '571.3. Our regulations require the vehicle manufacturer to state the vehicle type classification on the vehicle's certification label. The certification label of the vehicle in question should have that information.

Your second question asks, "Does FMVSS 206 and/or FMVSS 217 apply to the right front entrance door of this vehicle?"

With respect to FMVSS 206, Door locks and door retention components, the answer is no. Standard 206 applies only to passenger cars, multipurpose passenger vehicles, and trucks. The standard does not apply to buses.

With respect to FMVSS 217, Bus emergency exits and window retention and release, the standard specifies requirements for window retention other than windshields in buses, except buses designed to transport persons under restraint, and establishes operating forces, opening dimensions, and markings for emergency exits. The glazing requirements of S5.1 of FMVSS 217 would apply to the right front entrance door, and if the door was also used as an emergency exit, it must also have complied when new with the emergency exit requirements of S5.2.3, S5.3, S5.4.2, and S5.5.3 of the standard.

Your third question asked, "Which FMVSS would apply to the right front entrance door (particularly its loading requirements)?"

The answer is that apart from the provisions of FMVSS 217 discussed in our answer to your second question, there was no FMVSS in 1988 that specified performance standards for the right front entrance doors of buses. Effective September 1, 1993, however, the side door strength requirements of FMVSS 214, Side Impact Protection, will apply to 90 percent of the buses with a gross vehicle weight rating (GVWR) of 10,000 pounds or less produced after that date, and all buses with a GVWR of 10,000 pounds or less produced on and after September 1, 1994, must comply with those requirements.

I would like to make the following observation about the modification of the door in question. Modifications of new and used vehicles by commercial parties are subject to '108(a)(2)(A) of the Safety Act (15 U.S.C. 1397(a)(2)(A)). That section prohibits any manufacturer, distributor, dealer, or vehicle repair business from knowingly rendering inoperative any device or element of design installed on or in a vehicle in compliance with a Federal motor vehicle safety standard. In this case, your letter did not indicate who disabled the original latch mechanism on the vehicle or who installed the remote door latch mechanism. If the work was done by a party listed in '108(a)(2)(A), the person modifying the vehicle was responsible for not degrading the performance of the door with regard to FMVSS 217.

Section 108(a)(2)(A) does not apply to individual vehicle owners. Thus, vehicle owners can modify the vehicle in any manner he/she chooses without violating any Federal requirements.

I hope this information answers your questions. We have enclosed copies of FMVSS 206 and 217 that were effective in 1988, photocopied from the October 1, 1987 edition of the Code of Federal Regulations, as you requested. Should you have other questions, please feel free to contact Walter Myers of my staff at this address or at (202) 366-2992.

Sincerely,

John Womack Acting Chief Counsel

Enclosures ref:206#217 d:6/28/94

1994

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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