ID: nht94-5.22

DATE: May 18, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Paul L. Anderson -- President, Van-Con, Inc.

TITLE: None

ATTACHMT: Attached To Letter Dated 5/2/94 From Paul Anderson To John Womack (OCC-9923)

TEXT: Dear Mr. Anderson:

This responds to your letter of May 2, 1994, requesting information on which of the recent amendments to Standard No. 217, Bus Emergency Exits and Window Retention and Release (57 FR 49413; November 2, 1992, and 57 FR 57020; December 2, 1992), would apply to Type A-1 school buses. Your letter notes that Type A-1 school buses have a capacity of 16-20 passengers and a gross vehicle weight rating (GVWR) of less than 10,000 pounds.

The recent amendments to Standard No. 217 set new requirements for the provision of emergency exits based upon the seating capacity of the school bus (S5.2), set performance requirements for emergency exit window and emergency roof exit release (S5.3), revised the extension requirements for side doors and set extension requirements for emergency roof exits (S5.4), and revised the identification requirements (S5.5). The effect of each of these amendments on Type A-1 school buses is discussed separately below.

Provision of Emergency Exits (S5.2)

The recent amendments listed above revised S5.2.3 to specify the number and type of exits required on school buses, including Type A-1 school buses. This section states:

The area in square centimeters of the unobstructed openings for emergency exit shall collectively amount to at least 432 times the number of designated seating positions in the bus. The amount of emergency exit area credited to an emergency exit is based on the daylight opening of the exit opening.

The section also specifies the type of emergency exits which must be installed to meet this requirement. All school buses, including Type A-1 school buses, are required to have either a rear emergency exit door or a side emergency exit door and a rear push-out window. These are the same exits required by Standard

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No. 217 before the recent amendments. After deducting the daylight opening of the front service door and the required exit(s), any remaining exit area must be provided by installing additional exits in the following order: (1) a side emergency exit door, (2) a emergency roof exit, and (3) any combination of emergency exit doors, emergency roof exits, and emergency exit windows.

Please note that, while these new requirements apply to all school buses, it is unlikely that a 20 passenger school bus will require additional exits. Under the new requirements, a school bus with 21 designated seating positions (20 passengers plus the driver) is required to provide 9,072 square centimeters of exit area. A school bus with a front service door and either of the mandatory options (rear emergency exit door or side emergency exit door and rear push-out window) should easily exceed this amount. To illustrate, in the past, the agency has estimated that the average front service door has a daylight opening of 12,916 square centimeters. For school buses with a GVWR of 10,000 pounds or less, a rear emergency door that is the minimum size required to meet the extension requirements has a daylight opening of 6,270 square centimeters. A side emergency door that is the minimum size required to meet the extension requirements has a daylight opening of 6,954 square centimeters. A rear push-out window that is the minimum size required has a daylight opening of 5,002 square centimeters.

Emergency Exit Release (S5.3)

The recent amendments added performance requirements for the release mechanisms for emergency exit windows and emergency roof exits on school buses. As explained above, the recent amendments should not require either of these types of exits to be installed on Type A-1 school buses. However, if either of these types of exits are voluntarily installed on Type A-1 school buses, the release mechanisms must comply with these requirements. In the recent amendments to Standard No. 217, some of the performance requirements, including the release requirements in S5.3, apply to "each" emergency exit. This language extends these requirements to any emergency exit door in a school bus, including voluntarily installed ones. Other requirements apply to "required" emergency exits. (See, for example, S5.5.3(c) discussed below.) Those requirements do not apply to voluntarily installed emergency exits.

Emergency Exit Extension (S5.4)

The amendments of the extension requirements also apply to Type A-1 school buses. The recent amendments revised the extension requirements for side doors on school buses with a GVWR of more than 4,536 kilograms (10,000 pounds) and set extension requirements for emergency roof exits on school buses with a GVWR

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of more than 4,536 kilograms (10,000 pounds). These amendments also affect school buses with a GVWR of 10,000 pounds or less, as the requirements specify that these vehicles are to comply with the same requirements as school buses with a GVWR of more than 10,000 pounds (except for the minimum size for rear emergency exit doors).

If a Type A-1 school bus has a side emergency exit door, that exit is required to comply with the amended requirements concerning access to the exit. Under the new requirements, side emergency exit doors are required to provide an opening at least 114 centimeters high and 61 centimeters wide. In addition, an aisle 30 centimeters wide (referenced to the rear edge of the door) must be provided from the longitudinal centerline of the bus to the exit. A seat bottom is allowed within this aisle if it flips up when not in use such that it no longer is within the aisle. Finally, no portion of a seat or restraining barrier may block access to the latch.

In addition, if an emergency roof exit is installed in a Type A-1 school bus, it is required to provide an opening at least 41 centimeters high and 41 centimeters wide under the new requirements.

Finally, all emergency exit doors, including emergency exit doors on Type A-1 school buses, are required to have a positive door opening device.

Emergency Exit Identification (S5.5)

Finally, the recent amendments revised the identification requirements (S5.5) for exits on all school buses, including Type A-1 school buses. As revised, each required emergency exit is required to be marked with the words "Emergency Door" or "Emergency Exit," as appropriate. For emergency exit doors, the location of this marking was not changed by these amendments. For emergency window exits and emergency roof exits, location requirements were added. In addition, each required emergency exit must be outlined with retroreflective tape. Please note however, that the identification requirements do not apply to voluntarily installed emergency exits (i.e., exits in excess of those required by S5.2.3).

You should be aware that there was a discrepancy concerning the size of the retroreflective tape caused by the metric conversion in the final rule. I have enclosed is a copy of a July 7, 1993 letter to Mr. Thomas D. Turner of the Blue Bird Body Company which discusses this issue. As explained in that letter, we plan to issue a correction notice of the November 2, 1992 rule that would specify a minimum size of 2.5 cm for the tape. Until the correction is issued, NHTSA will not take enforcement measures

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regarding tape size against a manufacturer who uses 1 inch wide retroreflective tape.

To summarize and answer your specific questions, Type A-1 school buses typically would not be affected by the recent amendment requiring either emergency roof exits or emergency window exits. However, required emergency exits (including a rear emergency exit door) are required to be outlined with retroreflective tape. In addition, all exits (required and voluntary) must comply with the new performance requirements for release and extension.

With respect to your receipt of an oral interpretation from agency staff, I would also like to emphasize that, to the extent there are questions concerning the meaning of any NHTSA standard or regulation, the only agency interpretations which are authoritative and which therefore can be relied upon by manufacturers are those issued in writing by the Chief Counsel. We have reminded agency staff not to make formal, or informal, oral statements that might be misinterpreted by manufacturers as official agency guidance on which they may safely rely.

Please note that recent delay of the effective date of the recent amendments applies only to provision of emergency exits (S5.2) (59 FR 22997; May 4, 1994). The other amendments were effective on May 2, 1994. I also note that the May 4 notice does not state "that it only applys (sic) to School Buses with capacity of 24 to 90 passengers." The notice does refer to tables in a previous NPRM which listed the types of exits required under the proposal for buses with a capacity in that range.

I have also enclosed a copy of the recent final rules for your use. I hope you find this information helpful. If you have any other questions, please contact Mary Versailles of my staff at this address or by phone at (202) 366-2992.

Sincerely,

Enclosures

ID: nht94-5.23

DATE: May 18, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Len R. Thies -- C&C Creations

TITLE: None

ATTACHMT: Attached To Letter Dated 11/30/93 From Len R. Thies To John Womack (OCC - 9401)

TEXT: Dear Mr. Thies:

This responds to your letter asking about Federal rules, particularly those for flammability resistance, applicable to your aftermarket product. I apologize for the delay in responding. You state that your product is a sheet of clear vinyl that inhibits the air flow in a van, thus reducing the amount of air to be heated or cooled. You further state that your product does not impair visibility and that it is easily detached and removed by the vehicle owner. This response is based on our understanding of the facts presented in your letter.

By way of background information, NHTSA is authorized to issue Federal Motor Vehicle Safety Standards that set performance requirements for new motor vehicles and items of motor vehicle equipment. NHTSA does not, however, approve or certify any vehicles or items of equipment. Instead, the National Traffic and Motor Vehicle Safety Act establishes a "self-certification" process under which each manufacturer is responsible for certifying that its products meet all applicable safety standards. The agency periodically tests new vehicles and items of equipment for compliance with the standards.

In response to your question, you are required to certify that your device complies with Standard No. 205, Glazing Materials (49 CFR @ 571.205), based on our understanding of your letter. Standard No. 205 applies to new, completed vehicles as well as to glazing sold in the aftermarket. The standard establishes performance requirements for various types of glazing (called "items") and specifies the locations in vehicles in which each item of glazing may be used. The standard also incorporates by reference "ANSI Z26," the American National Standards Institute's "Safety Code for Safety Glazing Materials for Motor Vehicles Operating on Land Highways." It appears that your device may be considered an "interior partition," which is considered under ANSI Z26 to be item 6 glazing.

In addition, if your product were manufactured for a new vehicle, the vehicle would have to be certified as complying

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with Standard No. 111, Rearview Mirrors and Standard No. 302, Flammability of Interior Materials, in addition to Standard No. 205. However, Standards No. 111 and No. 302 apply only to new vehicles, and not to items of aftermarket motor vehicle equipment. Thus, they do not apply to your product.

I note, however, that there are other Federal requirements that indirectly affect the manufacture and sale of your product. Under the Safety Act, your product is considered to be an item of motor vehicle equipment. As a manufacturer of motor vehicle equipment, you are subject to the requirements in @@ 151-159 of the Safety Act concerning the recall and remedy of products with safety related defects. I have enclosed an information sheet that briefly describes those responsibilities. In the event that you or NHTSA determines that your product contains a safety-related defect, you would be responsible for notifying purchasers of the defective equipment and remedying the problem free of charge.

Manufacturers, distributors, dealers, and motor vehicle repair businesses are subject to @ 108(a)(2)(A) of the Safety Act, which states: "No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative . . . any device or element of design installed on or in a motor vehicle or item of motor vehicle equipment in compliance with an applicable Federal motor vehicle safety standard . . . ." Your vinyl sheet could render inoperative the rearward visibility requirements set forth in Standard No. 111, or the light transmittance requirements set forth in Standard No. 205. In addition, your product could have elements of design that could render inoperative a vehicle's compliance with Standard No. 302, the FMVSS for flammability resistance for materials used in the occupant compartment of motor vehicles. While it appears unlikely that persons in the aforementioned categories would be installing your product, if they were to install it, they not compromise the rearward visibility or flammability resistance provided by the motor vehicle.

The "render inoperative" prohibition of @ 108(a)(2)(A) does not apply to the actions of vehicle owners in adding to or otherwise modifying their vehicles or items of motor vehicle equipment. Thus, if your products were placed in vehicles by the vehicle owners, they would not need to meet any FMVSSs. Nevertheless, NHTSA urges vehicle owners not to tamper with or degrade the safety of their vehicles.

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

Sincerely,

Enclosure

ID: nht94-5.24

DATE: May 18, 1994

FROM: Womack, John -- Acting Chief Counsel, NHTSA

TO: Schaub, James -- Midas Muffler Shop (Louisiana)

TITLE: NONE

ATTACHMT: Attached To 10/21/93 Letter From James Schaub To John Womack (OCC 9252)

TEXT: This responds to your letter asking us about Federal Motor Vehicle Safety Standard No. 105 with regard to replacing brake rotors and/or drums. I apologize for the delay in our response. You stated that local automobile dealership service departments do not follow manufacturers' recommendations in this area, causing your customers to believe that your shop is fraudulently selling and installing parts on vehicles when they are not needed. You requested an interpretation of Standard No. 105 in this regard, and asked whether there is any basis for fraud in replacing rotors and drums when they are outside manufacturer safety tolerances. You stated that if you can present an established standard to your customers, you can prevent them from believing they have been taken advantage of.

By way of background information, the National Traffic and Motor Safety Act (Safety Act) authorizes the National Highway Traffic Safety Administration (NHTSA) to issue Federal motor vehicle safety standards for new motor vehicles and new motor vehicle equipment. Standard No. 105, Hydraulic Brake Systems, specifies requirements for hydraulic brake systems and associated parking brake systems. The standard applies to new motor vehicles.

While you asked for an interpretation of Standard No. 105, that standard is of little relevance to your situation. This is because the Federal motor vehicle safety standards do not apply to a motor vehicle after its first sale to a consumer. The Safety Act does include some provisions which are relevant to used vehicles. In particular, the Safety Act prohibits manufacturers, distributors, dealers, and motor vehicle repair businesses from knowingly rendering inoperative any safety device or element of design installed on or in a motor vehicle or item of motor vehicle equipment in compliance with a safety standard. However, this provision would ordinarily not be relevant to a decision whether to replace, or mill or turn, worn brake drums and rotors.

With respect to your desire to show your customers an established standard in this area, I can call your attention to NHTSA's vehicle in use inspection standards. These standards set forth criteria for, among other things, inspecting service brake systems. You should be aware that these standards were developed for use by the States in establishing their inspection requirements. Thus, the standards only apply to the extent that they are adopted by individual States. I have enclosed a copy of the standards for your information and particularly call your attention to section 570.5(f). That section, which applies to vehicles with a GVWR of 10,000 pounds or less, reads as follows:

(f) Disc and drum condition. If the drum is embossed with a maximum safe diameter dimension or the rotor is embossed with a minimum safety thickness dimension, the drum or disc shall be within the appropriate specifications. .

. .

This section reflects the importance NHTSA places on following manufacturer recommendations in this area.

The states may regulate the repair of motor vehicles. We suggest that you investigate the laws of Louisiana to see whether they affect your situation.

We cannot advise you about Federal or state requirements concerning fraud. You may wish to contact the Federal Trade Commission, your state government, and/or a private attorney about this matter.

ID: nht94-5.25

DATE: May 17, 1994

FROM: John Womack -- Acting Chief Counsel, NHTSA

TO: Michael Love -- Manager, Compliance Porsche Cars North America, Inc.

TITLE: None

ATTACHMT: Attached To Letter Dated 1/21/93 From Michael Love To Paul Jackson Rice (OCC-8259)

TEXT: Dear Mr. Love:

This responds to your request for an interpretation of Federal Motor Vehicle Safety Standards (FMVSS) No. 101; Controls and displays and No. 102; Transmission shift lever sequence, starter interlock, and transmission braking effect. I apologize for the delay in our response. You asked about the standards in connection with three options your company is considering for changing its "Tiptronic" automatic transmission system.

By way of background information, the National Highway Traffic Safety Administration (NHTSA) does not provide approvals of motor vehicles. Under the National Traffic and Motor Vehicle Safety Act, it is the responsibility of the manufacturer to ensure that its vehicles meet applicable requirements. The following represents our opinion based on the facts provided in your letter.

The current Tiptronic automatic transmission system can be described as follows:

The shift lever is located in the middle console, where it can be moved along either of two slots which are located essentially parallel to the longitudinal axis of the vehicle. The left slot (automatic function) is essentially the same as a conventional automatic transmission gear shift lever, with the following positions (in order): P R N D 3 2 1. At the D position (only) of the left slot, the gear shift lever can be transferred to the M (manual) position of the right slot (manual function). The right slot consists of the following positions (in order): + M -. When the gear shift lever is in the right slot, the driver can select a higher gear (+) or lower gear (-) by tapping the shift lever. The shift lever always returns to the "M" position after being tapped.

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There are two gear position displays, one on the middle console and the other on the instrument panel. The middle console display, which is not illuminated, shows each of the 10 positions where the shift lever may be placed. It also shows the position which is selected. The display on the instrument panel, which is illuminated, has two columns which correspond to the slots on the middle console. However, while the left column (corresponding to the left slot or automatic function) shows the positions P R N D 3 2 1, the right column (corresponding to the right slot or manual function) shows the positions 4 3 2 1. In other words, the right column portion of the display shows the available gears and the actual gear selected rather than + M -. For both columns, the selected position or gear is indicated by an illuminated arrow.

In your letter to NHTSA, you indicate that Porsche is considering the following three options for modifying its system:

Option 1. The first proposed modification would eliminate the 3, 2 and 1 positions on the left (automatic) slot.

Option 2a. The second proposed modification would eliminate the 3, 2 and 1 positions on the left (automatic) slot and the + and - positions on the right (manual) slot. Gear selection in the manual mode would be accomplished not by the shift lever but by shift rocker switches on the steering wheel.

Option 2b) The third proposed modification would provide only one slot with the following positions (in order): P R N D M D. In the M position, gear selection would be accomplished by shift rocker switches on the steering wheel.

For each of the proposed modifications, the shift lever positions would be labeled on the middle console, in the same manner as the current system. Similarly, the middle console would not be illuminated. The instrument panel display would not change for any of the options.

You ask a number of questions concerning whether the Tiptronic system, as modified under options 1, 2a and 2b, would comply with Standards No. 101 and 102. The issues raised by your letter are addressed below.

I will begin by identifying the requirements of Standards No. 101 and No. 102 which are relevant to your questions. Section S3.1.4.1 of Standard No. 102 states:

Except as specified in S3.1.4.3, if the transmission shift lever sequence includes a park position,

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identification of shift lever positions, including the positions in relation to each other and the position selected, shall be displayed in view of the driver whenever any of the following conditions exist:

(a) The ignition is in a position where the transmission can be shifted.

(b) The transmission is not in park.

S3.1.4.4 states:

Effective September 23, 1991, all of the information required to be displayed by S3.1.4.1 or S3.1.4.2 shall be displayed in view of the driver in a single location. At the option of the manufacturer, redundant displays providing some or all of the information may be provided.

Standard No. 101 specifies requirements for the location, identification and illumination of automatic gear position indicators. Section S5.1 requires that gear position display must be visible to the driver under the conditions of S6. Section S5.3.1 and Table 2 of the standard together require that automatic gear position displays be illuminated whenever the ignition switch and/or the headlamps are activated. The entry in Table 2 concerning the automatic gear position display references Standard No. 102. In a April 2, 1989 letter to Porsche concerning the Tiptronic system, we concluded that, given the reference in Standard No. 101 to Standard No. 102, where multiple gear position displays are provided and one complies with Standard No. 102 and the others do not, the requirements of Standard No. 101 must be met for the display which complies with Standard No. 102.

With this background in mind, I will discuss the existing Tiptronic system and the three possible modifications. For the reasons discussed above and in our April 2, 1989 letter, while multiple gear position displays are permitted, one such display must comply with all of the relevant requirements of Standards No. 101 and No. 102. Since your console display is not illuminated, it would obviously not comply with Standard No. 101. I will therefore address your letter in the context of whether the instrument panel display meets the requirements of the two standards. I assume that the instrument panel is activated during the times specified by Standard No. 102.

Under section S3.1.4.1 of Standard No. 102, there must be a display of all of the shift lever positions in relation to each other, and there must be an indication of the position that the driver has selected. In our April 2, 1989 letter, we stated that your design has the following ten shift lever

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positions: P R N D 3 2 1 + M -. We noted that the right column of the alternative instrument panel displays identified in your letter showed either 4 3 2 1 or 4 3 M 2 1 instead of + M -. We concluded that if the instrument panel display was to be used to meet the requirements of Standard No. 102, it would be necessary for the display to show the 10 actual shift lever positions, including + M -.

Porsche evidently did not follow the opinion provided in that letter, since Porsche neither provided illumination for the console display nor showed the 10 actual shift lever positions, identified in our letter, on the instrument panel display. While we do not understand the reason for this decision by Porsche, we believe that one could reasonably argue that the + and - locations are not really shift lever "positions," since the shift lever cannot be left in those locations. Under this view, + M - could be seen as "one" shift lever position, which is represented on the instrument panel by 4 3 2 1. We would accept this as an alternative way of characterizing the current Tiptronic system, and are therefore not aware of any compliance problems.

I will now turn to the three possible modifications. Once again, since the non-illuminated console display would not meet the requirements of Standard No. 101, the relevant question is whether the instrument panel display meets the relevant requirements of Standards No. 101 and No. 102. A common problem for all three options would be that the instrument panel display retained from the original Tiptronic system would not correspond to the shift lever positions of the modified designs. This could be corrected for options 1 and 2a simply by deleting the 3 2 1 portion of the left column. A more complicated correction would be needed for option 2a, since the display would need to show the following positions in relation to each other: P R N D M D.

I have several other comments on your letter. You stated that for all three options, Porsche believes that it is not necessary to have the shift lever positions 3, 2 and 1, or to necessarily display those positions if selected automatically in the D position, as long as they as displayed when selected manually by use of the shift lever (in option 1) or shift rocker switch(es) (in options 2a and 2b). Porsche is correct that it is unnecessary to provide shift lever positions 3, 2 and 1. Moreover, to the extent that such shift lever positions are not provided but the gears are instead selected automatically in the D position or manually in the M position by tapping the shift lever or shift rocker switch, it is unnecessary to display the gears.

You also stated the following:

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Porsche believes that under options 2a and 2b, both the shift lever and the shift rocker switch(es) would be considered as "shift levers" during the period when they are capable of changing the transmission position. The "shift lever position" would then be defined as the transmission position, or mode of operation, that was selected by manipulation of any combination of "shift levers." It follows then that identification of "shift lever position" would entail identifying the distinct transmission operating modes, in relation to each other and the specific mode selected. . . .

For options 2a and 2b, Porsche believes it is not necessary to illuminate the shift rocker switches, just as it is not necessary to illuminate the shift lever, under the provisions of FMVSS 101, as long as the display in the speedometer showing transmission position is illuminated.

We would not view the shift rocker switch(es) as shift levers under any circumstances. Instead, for the vehicle designs at issue, the lever provided on the middle console would be the only shift lever. When the shift lever is in the "M" position, the shift rocker switch(es) simply permit manual shifting that is akin to the automatic shifting that occurs when the shift lever is in the "D" position. The rocker switch(es) could not be used to shift the transmission to P, R or N. Under these circumstances, we view the rocker switch(es) as a control which is auxiliary to the shift lever and unregulated by Standard No. 102. I note that we might take a different position if the rocker switch(es) permitted the transmission to be shifted to P, R or N, since Standard No. 102 includes requirements to prevent shifting errors. I also note that Standard No. 101 does not require transmission shift levers or controls which are auxiliary to shift levers to be illuminated.

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

Sincerely,

ID: nht93-4.47

DATE: June 25, 1993

FROM: Ernest Farmer -- Director, Pupil Transportation, Tennessee State Department of Education, Office of Commissioner

TO: Chief Counsel

COPYEE: Wayne Qualls

TITLE: None

ATTACHMT: Attached to letter dated 7-13-93 from John Womack (signature by Stephen P. Wood) to Ernest Farmer (Std. 108; VSA 108(a)(2)(A))

TEXT:

We are interested in conducting a "controlled" experiment involving a substitution of strobe lights for the traditional incandescent lights currently used in the eight light overhead warning system on school buses. Would this experiment, in your opinion, conflict with the provisions of FMVSS 108? An early reply would be appreciated since the retrofitting of these three buses (one bus in each of three school systems) is scheduled during the month of July.

ID: nht93-4.48

DATE: June 25, 1993

FROM: Kenneth P. Simons -- Lawyer

TO: Department of Transportation -- Trucking Division

TITLE: None

ATTACHMT: Attached to letter dated 4/25/94 from John Womack to Ken Simons (A42; Std. 121)

TEXT:

I would like an answer or information as to whether or not over the road trailers (as in tractor trailer) of recent manufacture are required to be equipped with "maxi" brakes on one or both axles.

The "maxi" brake I am referring to is found on all road tractors and sets the brakes automatically when the air pressure gets down to a minimum level.

Thank you for you anticipated cooperation.

ID: nht93-4.49

DATE: June 28, 1993

FROM: John Womack -- Acting Chief Counsel, U.S. Department of Transportation, NHTSA

TO: Henry Murillo

TITLE: None

ATTACHMT: Attached to letter dated 4-20-93 from Henry Murillo to Z. Taylor Vinson (OCC 8609).

TEXT: This responds to your letter of April 20, 1993, to Taylor Vinson of this Office. You have asked for an interpretation of the regulations regarding new automotive products, and how they apply to your invention, the "Green Light System". This system consists of two strips of green plastic, illuminated from behind. One would be mounted "somewhere in the front of the car", and the other "possibly on top of the cyclops (rear top dash mounted brake light)." The flashing of each unit (strip plus light source) would indicate to a vehicle either in front or behind when it was safe to pass.

The general rule with automotive accessory equipment that a dealer adds before sale of a vehicle is that it must not create a noncompliance with the Federal motor vehicle safety standards to which the vehicle manufacturer has certified.

For example, the Green Light System unit installed in the front should be mounted so that it does not block the field of view required by the safety standard on rearview mirrors (Standard No. 111) or that it is not in the head impact area of the instrument panel so as to interfere with interior occupant protection requirements (Standard No. 201).

When the Green Light System is mounted in the rear, the same concerns with the field of view required by Standard No. 111 still apply. With respect to our safety standard on vehicle lighting, Standard No. 108, in order for the vehicle to remain in compliance the Green Light System must not impair the effectiveness of the lighting equipment required by Standard No. 108. We believe that the Green Light System mounted in the rear of the vehicle has the potential to impair required rear lamp systems equipped with red lenses if the Green Light System is wired so that it may operate simultaneously with one of these systems. The public is not used to seeing a flashing green lamp at the rear, and momentary confusion may result. For example, a driver following a slow-moving vehicle could confront simultaneous operation of a flashing red turn signal and a flashing Green Light System, and would not know whether the leading vehicle was intending to turn or signalling that it was safe to pass.

Accessory equipment that is installed on vehicles after their sale, when they are in use, is also permissible if its installation by a manufacturer, distributor, dealer, or motor vehicle repair business does not knowingly create a partial or total noncompliance with a standard. However, under Federal law, the vehicle owner may install aftermarket equipment such as the Green Light System without regard to its effect upon compliance with the standards. There remains the question of whether use of accessory equipment such as the Green Light System is permissible under the laws of the State where the vehicle is registered and operated. We are unable to answer questions relating to State laws, and suggest that you consult the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard, Arlington, Va. 22203.

ID: nht93-4.5

DATE: May 20, 1993

FROM: Karl-Heinz Ziwica -- General Manager, Environmental Engineering, BMW of North America, Inc.

TO: Stephen P. Wood -- Assistant Chief Counsel, Rulemaking, NHTSA

COPYEE: David Elias; William Fan

TITLE: Re: 49 CFR 571.206, FMVSS No. 206; Door Locks and Door Retention Components; Request for Interpretation

ATTACHMT: Attached to letter dated 10/7/93 from John Womack to Karl-Heinz Ziwica (A41; Std. 206)

TEXT:

Recently, William Scully of my staff and our counsel, Donald M. Schwentker, met with David Elias of your staff and William Fan of Rulemaking to discuss our interpretation of 49 CFR 571.206, Federal Motor Vehicle Safety Standard ("FMVSS") No. 206, Door locks and door retention components, with respect to a new design door latch and lock system that BMW is planning to introduce on a new car line in the United States in the near future. At that time, Mr. Scully also demonstrated the new system on a modified production BMW passenger car.

We hereby request the agency's confirmation of our interpretation that the operation of BMW's new system conforms to the applicable provisions of FMVSS 206.

FMVSS 206 REQUIREMENTS

S4.1.3 DOOR LOCKS. Each door shall be equipped with a locking mechanism with an operating means inside the vehicle.

S4.1.3.1 SIDE FRONT DOOR LOCKS. When the locking mechanism is engaged, the outside door handle or other outside latch release control shall be inoperative. S4-1.3.2 SIDE REAR DOOR LOCKS. In passenger cars and multipurpose passenger vehicles, when the locking mechanism is engaged, both the outside and inside door handles or other latch releases controls shall be inoperative.

DESCRIPTION OF THE OPERATION OF THE BMW SYSTEM

The inside door handle operates as a door lock release AND SUBSEQUENTLY as a door latch release. The first complete activation of the recessed handle (a pulling motion) releases the door locking mechanism. The second activation (another pulling motion) operates the door latch release control.

WHY THE BMW DOOR LOCK SYSTEM COMPLIES WITH FMVSS 206

-- When the rear door locking mechanism is engaged, the door handles ARE INOPERATIVE.

-- After the door locking mechanism is disengaged (by activating the common door lock/door latch release handle), the door handle BECOMES OPERATIVE.

OCCUPANT PROTECTION INTENDED BY FMVSS 206, AND HOW BMW'S DOOR LOCK SYSTEM PROVIDES SUCH PROTECTION

-- Ejection

* BMW's system affords even more protection against inadvertent opening of doors than that required by FMVSS 206 for front doors.

-- Inadvertent Opening by Children

* All BMW products are fitted with rear door child locks (which deactivate operation of the inside door handles) as standard equipment, and when such child locks are engaged, the rear doors CANNOT BE OPENED FROM THE INSIDE.

* Restrained children cannot reach the rear door handle.

* Two separate actions are required to open the rear doors (when the child locks are not engaged), just as in a conventional door lock and door latch release system.

* The door lock release of most current conventional systems is placed immediately adjacent to the door latch release.

OTHER ADVANTAGES OF BMW'S DOOR LOCK SYSTEM

In addition to the convenience provided to the vehicle occupants, BMW's door lock system affords easier exit after a crash, and is less vulnerable to damage during side impact.

For these reasons, BMW believes its new system fully complies with the applicable provisions of FMVSS 206, while providing distinct advantages to its customers.

If you have any questions about this request or the operation of the new BMW door locking system, please contact Mr. William Scully at (201) 573-2069.

ID: nht93-4.50

DATE: June 28, 1993

FROM: John Womack -- Acting Chief Counsel, U.S. Department of Transportation, NHTSA

TO: Steven Henderson -- Department of Psychology, McGill University

TITLE: None

ATTACHMT: Attached to letter dated 5-26-93 from Steven Henderson to Howard Smolkin (OCC 8732).

TEXT: This responds to your petition of May 26, 1993, to the Acting Administrator for rulemaking to amend Motor Vehicle Safety Standard No. 108 to permit use of your motorcycle "horn-activated headlight/signallight flasher system." As you have described it, pushing the horn button "causes the headlight and signal lights to flash 10 times per second." This matter has been the subject of previous correspondence by this Office, specifically letters to you from Chief Counsel Rice dated June 29, 1992, and August 28, 1992.

As Mr. Rice informed you in his first letter, the operation of your device conflicted with several paragraphs of Standard No. 108. First, the flash rate of 10 cycles per second exceeded the maximum of 280 cycles per minute that is allowed under S5.6.1(a) for modulation of motorcycle headlamps. Second, the taillamps would no longer be steady-burning as required by S5.5.10 (d). Further, it appeared that the turn signal rate would also cease to comply with the flash rate of 60-120 per minute specified by SAE requirements incorporated by reference in Standard No. 108.

You responded on August 11, 1992, that it was improper to consider your device under S5.6 as it is not a motorcycle headlamp modulating system as described in that section. Thus, in your view, our objections to modulation rate and intensity, based upon that section, were misplaced. In his reply of August 28, 1992, Mr. Rice assumed for the sake of argument that your device was not part of a headlamp modulating system subject to S5.6. However, he pointed out that S5.1.3 of Standard No. 108 prohibits installation of equipment that impairs the effectiveness of lighting equipment that Standard No. 108 requires, and that the applicability of that paragraph did not affect his previous comments regarding the noncompliances of the flashing taillamps and the turn signal flash rate. He also commented that the device's flash rate of 10 hz would impair the effectiveness of the required turn signal flash of 1-2 hz, as well as having another undesirable consequence, the triggering of a photic reaction in an observer.

The cover letter to your petition of May 26, 1993, states that the taillamps will now be steady burning. Further, the system has been redesigned so that the turn signal has priority, "so that if the horn button is pressed while a turn is being signalled, the turn signal continues to flash at 2 hz and only the headlamp flickers at the 10 hz rate." Your letter also contains data and arguments indicating that our concern about photic reaction to a 10 hz rate is misplaced. In our view, these modifications and comments have adequately addressed our previous concerns about your system, and no rulemaking is required for its manufacture and sale. For this reason, we see no need for further agency action upon your petition. However, the amendments you have asked for differ in some respects from the redesigned system you have described

(e.g., that both the turn signals and the headlamp be permitted to flash at 10 hz). If you wish to go forward with the redesigned system without an amendment to Standard No. 108, we ask that you withdraw your petition. On the other hand, if you wish us to go forward with consideration of your petition, please inform us.

Your most recent letter raised one further question with regard to S5.1.3, that is, whether the operation of the headlamp at 10 hz impairs the effectiveness of a turn signal operated at 2 hz. We have noted that S5.6 permits simultaneous operation of a turn signal and a headlamp modulating in the range of 6 hz, and have concluded that the difference in flash rate ought not to impair the turn signal function.

Finally, we would like to advise you that usage of the system in the United States is governed by the laws of any State in which the system is operated, and not by any Federal regulation. We are unable to advise you as to the permissibility of use of your system under State laws, and suggest that you contact the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard, Arlington, Va. 22203, for an opinion.

ID: nht93-4.51

DATE: June 28, 1993

FROM: John Womack -- Acting Chief Counsel, U.S. Department of Transportation, NHTSA

TO: Eddie Bernice Johnson -- U.S. House of Representatives

COPYEE: Washington Office

TITLE: None

ATTACHMT: Attached to letter dated 6-2-93 from Eddie Bernice Johnson to Art Neill (OCC 8736).

TEXT: This responds to your letter of June 2, 1993, to Art Neill of this agency on behalf of your constituent, Dr. Bill Way of Dallas. Dr. Way is concerned about the policy of the Department of Defense (DOD) to destroy M151 jeeps at the end of their useful military life because "for some reason the Department of Transportation has deemed (them) unsafe to be used on public roads." He finds this unusual "because if they are found to be unsafe on our roads, how can we consider these vehicles safe for use by military personnel?" Pointing out that used M151s could be sold for civilian use, he submits that "this is another waste of materials by the government."

As you know, it is the mission of the National Highway Traffic Safety Administration (NHTSA) to improve safety upon the public roads of the United States. Over 20 years ago, NHTSA became aware of allegations regarding the tendency of the M151 jeep to roll over during turning maneuvers. DOD was aware of these allegations and provided special handling instructions to M151 operators intended to minimize the possibility of roll overs. At that time, it sought NHTSA's advice as to the proper disposition of these vehicles at the end of their useful military life.

Because the suspension systems of the M151s could not be modified and because civilian operators would not have access to the same training in handling that was provided military drivers, NHTSA advised that surplus M151s should be rendered inoperable rather than sold to the public. DOD concurred, and formulated the policy that these vehicles should be destroyed at the end of their military life. This decision involved a balancing of the competing public interests of recovery of governmental funds and safety on the nation's highways, and the latter has been found to be the predominant public interest. In the years since DOD adopted this policy, it has been reviewed by both agencies from time to time and no compelling reason has been found to change it.