ID: nht69-1.18

DATE: 02/11/69

FROM: AUTHOR UNAVAILABLE; Clue D. Ferguson; NHTSA

TO: Payne, Barlow and Green, Attorneys at Law

TITLE: FMVSS INTERPRETATION

TEXT: Thank you for your letter of January 23, 1969, to William Haddon, Jr., M.D., requesting information on Federal standards for child restraint devices.

I am enclosing a copy of Federal Motor Vehicle Safety Standard No. 209, "Scat Belt Assemblies - Passenger Cars, Multipurpose Passenger Vehicles, Trucks and Buses" which includes requirements for a Type 3 seat belt assembly for persons weighing not more than 50 pounds and capable of sitting upright by themselves.

The technical requirements of the present standard No. 209 were previously included in "Standard for Seat Belts for Use in Motor Vehicles (15 CFR Part 9; 31 F.R. 11528)" which was incorporated by reference in the initial Standard No. 209. I am also enclosing copies of these previous documents.

We are in the process of developing a standard for child car seats and I am enclosing a copy of a recently issued Notice of Proposed Rule Making on this subject. It is important to note that this is only a proposed regulation and the requirements may be modified somewhat when the final rule is published. However, this proposed rule indicates those safety features which are considered to be important for a child car seat.

There are no other existing Federal standards on child restraint systems for use in motor vehicles.

Sincerely,

January 23, 1969

William Haddon, Director National Highway Safety Bureau Department of Transportation

Dear Dr. Haddon:

I am seeking information regarding Federal Standards for Child Restraint Devices and will appreciate your furnishing same to me as soon as it is convenient for you.

I am attempting to measure the adequacy of a particular device that apparently contributed to a child's injury that occurred on May 15, 1968. I do not know the date of manufacture of this device but it is important that I obtain an itemization of minimum standards that have applied for several years.

Sincerely,@@53:426

ID: nht73-3.46

DATE: 03/12/73

FROM: AUTHOR UNAVAILABLE; Lawrence R. Schneider; NHTSA

TO: Harnischfeger Corporation

TITLE: FMVSR INTERPRETATION

TEXT: This is in reply to your letter of January 25, 1973, to Gordon Lindquist, Regional Administrator, NHTSA, asking whether Federal standards require the installation of seat belts on certain vehicles you manufacture. According to brochures you have submitted, these vehicles are your RH 25 3-cu. yd. heavy duty hydraulic shovel, R-150-1 15-ton hydraulic crane, W-350 35-ton hydraulic swinger crane, and T-150 15-ton fully hydraulic truck crane.

With reference to the first three vehicles, the RH 25, R-150-1, and W-350, the NHTSA does not consider these vehicles to be manufactured primarily for use on the public roads. Therefore, they are not "motor vehicles" subject to regulation under the National Traffic and Motor Vehicle Safety Act of 1966. We view them as construction equipment whose use of the public roads is incidental to their primary work-performing purpose.

The NHTSA believes, however, based on the information you have submitted, that the T-150 hydraulic truck crane is a motor vehicle under the Safety Act, and a "truck" under the motor vehicle safety standards. We base this determination on the vehicle's speed capability, that its manufacturer classifies it as a "truck crane", and that its overall appearance appears to be that of a vehicle designed to be used on the highway. As a truck, the vehicle is required to be equipped with seat belts as specified in Motor Vehicle Safety Standard No. 208, Occupant Crash Protection (49 CFR 571.208, copy enclosed). It is required also to conform to safety requirements specified in other safety standards and regulations. Copies of the standards can be obtained as described in the enclosed, "Where to obtain Motor Vehicle Safety Standards and Regulations".

Our decision as to whether this vehicle is a motor vehicle is based only on that information which you have provided us. Other relevant factors which can be taken into consideration are set forth in the enclosed interpretation regarding mini-bikes. If you have further information which you believe we should also consider we will be glad to review it.

ENCLS.

ID: 7378

Mr. Berkley C. Sweet
Vice President
School Bus Manufacturers Institute
7508 Ben Avon Road
Bethesda, MD 20817

Dear Mr. Sweet:

This responds to your letter of May 29, 1992 asking what minimum passenger size (weight and height) was used in developing the requirements of Federal Motor Vehicle Safety Standard No. 222, School Bus Passenger Seating and Crash Protection. You noted that several school districts are now transporting newborn and under-school-age children to schools which provide day-care service, and that you have received inquiries concerning the "limits, if any, on passenger size and age that can be safely transported on school bus seats."

The National Traffic and Motor Vehicle Safety Act, defines a "school bus" as a vehicle that "is likely to be significantly used for the purposes of transporting primary, preprimary, or secondary school students to or from such schools or events related to such schools." NHTSA has never specified a passenger size and/or age range applicable to the compartmentalized school bus seats required by Standard No. 222. In developing the standard, however, NHTSA considered the range of sizes and ages of children attending preprimary through secondary school.

NHTSA has developed approximate size and weight guidelines for child restraint systems. For children from birth to 9-12 months (or up to 20 pounds), NHTSA recommends use of an infant or convertible seat facing the rear. For children from 9-12 months to 4 years (or 20 pounds to 40 pounds), NHTSA recommends use of a convertible or toddler seat. If a school is transporting children in these age and weight ranges, they may want to consider using a school bus with safety belts to secure a child restraint system. I have enclosed a consumer information sheet titled "Transporting Your Children Safely" for your information.

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,

Paul Jackson Rice Chief Counsel

Enclosure

ref:571 d:7/28/92

ID: nht91-1.35

DATE: February 7, 1991

FROM: Billy S. Peterson -- President, Automotive Safety Testing, Inc.

TO: Office of Chief Council, DOT/NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 3-8-91 from Paul Jackson Rice to Billy S. Peterson (A37; Std. 108)

TEXT:

This letter is a request for clarification of allowable mounting locations and photometric output requirements for tail/stop lamps on passenger cars.

We have a client who wishes to mount two-part tail/stop lamps on the rear of their vehicle so that one lamp is mounted on the fixed quarter panel and a duplicate lamp is mounted on the trunk lid. The specific question we have is:

Must the minimum photometric requirements be met by the lamp mounted to the quarter panel or may the portion mounted to the trunk lid count toward the photometric requirements?

The confusion arises from a letter from your office to this office dated 1/28/88 which stated that the trunk lid is considered a rigid body panel for purposes of this standard because it is meant to be closed during normal operation and, therefore, the mounting of reflectors and back-up lamps on it is allowed.

Another letter, addressed to Volkswagen of America, dated 7/30/80, states essentially the same thing except it contains the opinion that placement of the tail/stop lamps on the trunk lid may be viewed as a defect in performance, subject to recall. Our interpretation of this letter was that VW had planned to mount lamps only on the trunk lid and not the body quarter panel and this could pose a problem.

Since our client's intention to mount duplicate tail/stop lamps on both the body quarter panel and the trunk lid was not specifically addressed in the earlier letters noted above, this letter serves as a request for clarification of the requisite output requirements associated with that mounting arrangement.

A drawing of the proposed lamp combination is attached to this letter.

Attachment

Drawing of proposed lamp combination (Graphics omitted)

ID: nht91-1.43

DATE: February 15, 1991

FROM: Sidney A. Garrett -- President, Brown Cargo Van Inc.

TO: U.S. Department of Transportation, NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 3-7-91 from Paul Jackson Rice to Sidney A. Garrett (A37; Std. 108)); Also attached to letter dated 4-25-90 rom Stephen P. Wood to J. Douglas Smith (Std. 108)

TEXT:

We are manufacturers of truck van bodies and need an interpretation of Federal Motor Vehicle Safety Standard No. 108. Specifically we need an interpretation of the location of the front identification and clearance lamps.

The three amber identification lamps are to be attached at the same height, as close as practicable to the vertical centerline, and as close as practicable to the top of the vehicle. The two amber clearance lamps, indicating overall width, are to be attached at the same height, one on each side of the vertical centerline, and as near the top as practicable.

Our question is if the truck cab comes with all five amber lamps mounted on its top as in Exhibit 1, does this meet the standard and therefore we do not need to install additional lamps? If this does not meet the standard, then we need to know if either Exhibit 2, with only the clearance lamps attached to the van body, or Exhibit 3, with both clearance lamps and identification lamps attached to the van body, meets the standard.

We are trying to minimize our costs and do not want to install unnecessary lamps as long as we are meeting all safety standards. Also, we are in the process of redesigning the front of our van bodies and would like to have the answer to our question as soon as possible so that our engineers can proceed.

If you need any additional information, please contact me at 800-255-6827.

Attachment

Photos of a cargo van (Graphics omitted)

ID: nht91-3.47

DATE: May 10, 1991

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Vicki Haudler

TITLE: None

ATTACHMT: Attached to letter dated 4-9-91 from Vicki Haudler to S. Kratzke (OCC 5943)

TEXT:

This responds to your letter seeking further information about a possible determination to be made by the Secretary of Transportation under Federal Motor Vehicle Safety Standard No. 208 (49 CFR 571.208). S4.1.4.1 of Standard No. 208 provides that cars manufactured on or after September 1, 1989 must be equipped with automatic crash protection. Vehicles equipped with automatic crash protection protect their occupants by means that require no action by vehicle occupants. Compliance with the minimum performance requirements of Standard No. 208 is determined in a dynamic crash test. That is, a vehicle must comply with specified injury criteria, as measured on a test dummy, when tested by this agency in a 30 mph barrier crash test. The two types of automatic crash protection currently offered on new passenger cars are automatic safety belts (which help to assure belt use) and air bags (which supplement safety belts and offer some protection even when safety belts are not used).

As you noted in your letter, S4.1.5 of Standard No. 208 provides that: "If the Secretary of Transportation determines, by not later than April 1, 1989, that state mandatory safety belt usage laws have been enacted that meet the criteria specified in S4.1.5.2 and that are applicable to not less than two-thirds of the total population . . ., (the automatic restraint requirements will not go into effect)." You asked whether the Secretary ever made a determination under S4.1.5 regarding State safety belt use laws. The answer is no.

Under S4.1.5, the Secretary was not required to make any determination about any State safety belt laws. In fact, the Secretary never did so. Because no determination was made under S4.1.5, the automatic restraint requirements went into effect as of September 1, 1989 for all passenger cars.

I have returned the self-addressed, stamped envelope you enclosed in your letter. Good luck in your legal career.

ID: nht88-2.68

TYPE: INTERPRETATION-NHTSA

DATE: 07/12/88

FROM: WAYNE IVIE -- MANAGER, VEHICLE SUPPORT SERVICE SECTION, NHTSA

TO: NHTSA, OFFICE OF SAFETY COMPLIANCE/ENFORCEMENT

ATTACHMT: LETTER DATED DEC. 8, 1988 TO WAYNE IVIE, OREGON DEPT. OF TRANSPORTATION, FROM ERIKA Z. JONES, NHTSA

TEXT: On June 16th of this year, Oregon enacted a mandatory helmet law. Anyone riding on a motorcycle or moped on our highways must wear "approved" protective headgear.

Our agency adopted FMVSS 218, Motorcycle Helmets, as the minimum standard for helmets. Part S5.6.1 of the standard requires permanent and legible labeling of helmets, including the DOT symbol, to prove that a helmet meets that standard. Helmet manufactu rers apparently attach a sticker with the DOT symbol onto the back of the helmet.

Our office is receiving inquiries from individuals and police officers, who advise that on many helmets, this DOT sticker has fallen off or been removed by someone in order to paint the helmet, etc. They add that often there is no other labeling in or o n the helmet, so they can not determine that it meets any standard. (Is considered "approved" for use in Oregon.) To complicate this further, there is no manufacturer or brand name anywhere on the helmet, so contacting a dealer or manufacturer for infor mation is not possible. Advising someone to dispose of such a helmet and get another with proper labeling doesn't seem an appropriate answer, and may be just an undue expense for the motorcycle rider.

Are manufacturers allowed to use the DOT sticker only, with no other labeling, or is this being done in violation of FMVSS 218? (If the DOT sticker is now the only label used, we would definitely like to recommend that a permanently embossed DOT symbol somewhere in or on the helmet be also required.) Have you been advised of similar problems by other jurisdictions? Do you have suggestions on how we can resolve the situation of a helmet that appears to have been made in compliance with standard require ments, is in a good, undamaged condition, yet does not have any labeling?

Thank you for your help in this matter.

ID: nht92-5.8

DATE: July 28, 1992

FROM: Paul Jackson Rice -- Chief Counsel, NHTSA

TO: Berkley C. Sweet -- Vice President, School Bus Manufacturers Institute

TITLE: None

ATTACHMT: Attached to letter dated 5/29/92 from Berkley Sweet to Barry Felrice

TEXT:

This responds to your letter of May 29, 1992 asking what minimum passenger size (weight and height) was used in developing the requirements of Federal Motor Vehicle Safety Standard No. 222, School Bus Passenger Seating and Crash Protection. You noted that several school districts are now transporting newborn and under-school-age children to schools which provide day-care service, and that you have received inquiries concerning the "limits, if any, on passenger size and age that can be safely transported on school bus seats."

The National Traffic and Motor Vehicle Safety Act, defines a "school bus" as a vehicle that "is likely to be significantly used for the purposes of transporting primary, preprimary, or secondary school students to or from such schools or events related to such schools." NHTSA has never specified a passenger size and/or age range applicable to the compartmentalized school bus seats required by Standard No. 222. In developing the standard, however, NHTSA considered the range of sizes and ages of children attending preprimary through secondary school.

NHTSA has developed approximate size and weight guidelines for child restraint systems. For children from birth to 9-12 months (or up to 20 pounds), NHTSA recommends use of an infant or convertible seat facing the rear. For children from 9-12 months to 4 years (or 20 pounds to 40 pounds), NHTSA recommends use of a convertible or toddler seat. If a school is transporting children in these age and weight ranges, they may want to consider using a school bus with safety belts to secure a child restraint system. I have enclosed a consumer information sheet titled "Transporting Your Children Safely" for your information.

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.

(Text of Consumer Information Sheet omitted.)

ID: nht89-3.35

TYPE: Interpretation-NHTSA

DATE: November 7, 1989

FROM: S. Kadoya -- Manager, Safety and Technology, Mazda Research & Development of North America, Inc.

TO: Stephen P. Wood -- Acting Chief Counsel, NHTSA; George Parker -- Assoc. Administrator-Enforcement, NHTSA

TITLE: Re Request for Interpretation of 49 CFR Parts 571 and 581 with respect to active suspension systems.

ATTACHMT: Attached to letter dated 10-2-90 from P.J. Rice to S. Kadoya (A36; Std. 108; Std. 111; Std. 209; Std. 208; Std. 212; Std. 219; Std. 301; Part 581

TEXT:

The purpose of this letter is to request NHTSA's interpretation of the requirements and test conditions of the following Federal Motor Vehicle Safety Standards (FMVSS); as they apply to active suspension systems:

S108, "Lamps, reflective devices, and associated equipment" S111, "Rearview mirrors" S204, "Steering control rearward displacement" S208, "Occupant crash protection" S212, "Windshield mounting" S219, "Windshield zone intrusion of S301, "Fuel system integrity"

In addition, Mazda also requests an interpretation of the requirements of Part 581, "Bumper Standard," as they apply to active suspensions. Because this interpretation request covers several safety standards and because each standard may involve a parti cular person that is assigned to it, Mazda's questions regarding these individual standards have been presented in separate appendices to this letter. Each appendix addresses only one safety standard. Mazda hopes that this method will facilitate distri bution of this document to the appropriate NHTSA personnel. Mazda is writing to you both because the questions raised concern not only the interpretation of a given standard but enforcement issues as well.

Mazda is currently developing an active suspension system for possible use in future vehicle programs. The benefits of such a system have been, by now, well documented and, therefore, will not be repeated here. More importantly, Mazda is now working to establish a compliance testing protocol to the requirements of 49 CFR Parts 571 and 581. In attempting to establish this testing protocol numerous questions have arisen regarding the applicability, test conditions, and testing logistics of these Parts as they pertain to active suspension systems. In formulating this request, Mazda has reviewed past NHTSA interpretations for similar types of suspension systems. This request covers those questions that Mazda feels were not answered by previous interpr etations.

In order to obtain a meaningful interpretation of the requirements of the above listed safety standards, Mazda would like to stipulate an assumed active suspension system. For the purposes of this interpretation request the assumed system is actuated by hydraulic fluid or compressed air. An

electronic controller with feedback control regulates vehicle attitude to programmed design positions based on such inputs as:

1. vehicle speed 2. lateral acceleration 3. steering angle, and 4. suspension height

The primary sensed parameter for feedback control is suspension height. This system maintains a level vehicle body attitude, controls body pitch and roll, and effects a more aerodynamic vehicle profile at highway speeds. At vehicle speeds in excess of " Z" mph, where Z is greater than 35 mph, the suspension height is lowered by "x" mm. Control pressure is developed by a hydraulic pump or air compressor driven off the engine. Consequently, the active suspension system is only operational when the vehicl e's engine is operating. If the engine/vehicle should remain unused for a period of, say, days pressure in the control system will fall such that the suspension height may be lowered by as much as "y" mm, where "y" is greater than "x". The suspension h eight is returned to its nominal or design position for vehicle operation after such an extended period of inoperation almost immediately after starting the vehicle's engine. For convenience, let's call this assumed system, the ACS system.

Mazda is concerned about the protocol of compliance testing of vehicles equipped with an active suspension system. These concerns arise because many of the safety standards, primarily those listed above, do not specify a suspension height that is to be used during compliance testing. This has not been necessary with conventional suspension systems, and it may not be necessary with vehicles equipped with active suspension systems, if it is assumed for the purposes of compliance testing that the vehicle 's ignition switch is in the "on" position, i.e., the engine is operational and, thus, so is the system's hydraulic pump/air compressor. If this is indeed the case, the system is able to determine automatically a specified suspension height given a vehi cle speed and vehicle loading condition; just as a conventional shock absorber/spring system would determine mechanically a suspension height for these same given conditions. Unfortunately, the above listed standards do not specify explicitly the status of the vehicle's ignition switch. In most instances it is obvious that the ignition switch must be "on" for the vehicle to be able to fulfill its intended purpose. However, Mazda seeks a definitive interpretation of the status of a vehicle's ignition s witch, as well as the applicability of these standards as a function of the status of the ignition switch.

Furthermore, Mazda is concerned about the logistics of compliance testing. This is because the assumed active suspension system derives its power from the vehicle's engine when it is running, i.e., the system's ability to maintain and regulate suspension height is only possible during engine operation. For reasons of practicality and safety, a vehicle's engine is not actually operational during compliance testing. Therefore, Mazda is seeking from NHTSA guidelines by which Mazda may be able to establis h a means to maintain the intended suspension height for compliance testing purposes in the absence of engine operation. Mazda is reluctant to establish these means without such guidelines from NHTSA because it is

concerned that NHTSA may consider tests conducted in this manner to be in violation of the requirements of 49 CFR Parts 571 and 581 and, thus, invalid.

Mazda sincerely appreciates the opportunity for NHTSA's review of the issues raised in this letter and the attached appendices. Furthermore, Mazda would appreciate any further insight that NHTSA may wish to offer regarding these issues. NHTSA may also wish to consider how NCAP test procedures may be affected by the issues raised. Should NHTSA require further information or clarification of the issues raised in this letter and its attachments, please do not hesitate to contact either myself or Mr. R. Strassburger of my staff.

FMVSS No. 108, "Lamps, reflective devices, and associated equipment"

Prologue: NHTSA has previously issued an interpretation of the requirements of FMVSS No. 108; at the request of a confidential applicant and dated February 12, 1985, with respect to active suspension equipped vehicles. This interpretation stated that th e requirements of FMVSS No. 108 must be meet,"...at any time in which...",lamps, reflective devices, and associated equipment are to be,"...operated for its intended purpose." Consequently, headlamps, tailamps, stoplamps, the license plate lamp, and side marker lamps, must comply with the location requirements of FMVSS No. 108 when ever the vehicle's ignition is in the "on" position. Conversely, reflex reflectors, and turn signal lamps that also function as hazard warning signal flashers must comply wi th the location requirements when the vehicle's ignition is in either the "on" or "off" position. However, it is Mazda's interpretation that hazard warning flashers are not intended to be operational for a period of days, but rather for a period of hour s, at maximum, only.

Question A1: Is Mazda's understanding of the subject NHTSA interpretation accurate?

Question A2: Is Mazda's interpretation of the maximum intended operating duration of hazard warning signal flashers correct?

APPENDIX B: FMVSS No. 111, "Rearview mirrors"

Prologue: Section S5 of this standard describes the requirements for passenger cars. Section S5.1.1 establishes the requirements for,"Field of view." The location of the driver's eye reference points are established pursuant to the guidelines of FMVSS No. 104," Windshield wiping and washing systems." Safety standard no. 104 references SAE recommended practice J941," Motor vehicle driver's eye range,"; which describes a procedure for locating a locus of points representative of the eye locations for 9 0th, 95th, and 99th percentile distributions of a population mix of primarily US licensed drivers. Because the location requirements of J941 are made referenced to points within the vehicles cabin, it is not anticipated that the ACS system will perturb or otherwise interfere with these measurements. However, S5.1.1 requires further that the field of view,"...with an included horizontal angle measured from the projected eye point of at least 20 degrees, and sufficient vertical angle to provide a view o f a level road surface extending to the horizon

beginning at a point not greater than 200 feet to the rear of the vehicle..." As was stated in the cover letter to this appendix, the ACS system suspension height may fall by "y" mm if the vehicle is not used for a period of days. In a previous NHTSA i nterpretation of FMVSS No. 108, at the request of a confidential applicant and dated February 12, 1985, NHTSA stated that,"...the minimum height requirement should be met for any lamp at any time in which it is operated for its intended purpose." Using this "intended purpose" argument Mazda's interpretation of FMVSS No. 111 is that the requirements of this standard are to be met when the vehicle's ignition is in the "on" position as rearview mirrors are not intended to be used when the vehicle's engine is not operating.

Question Bl: Is Mazda's interpretation of the requirements FMVSS No. 111 with respect to the state of the vehicle's ignition switch correct?

Question B2: For the purposes of compliance testing to the requirements of FMVSS No. 111, what means of maintaining the intended suspension height for a given vehicle speed and operating condition would be satisfactory to NHTSA?

Appendix C: FMVSS No. 204, "Steering control rearward displacement"

Prologue: Section S4 of this standard specifies the compliance parameter for this standard. Section S5 specifies the testing conditions to determine compliance with this standard. Section S5.1 specifies that the vehicle be loaded to its unloaded vehicl e weight. Section S5.5 specifies that the vehicles fuel tank be filled with Stoddard solvent to any capacity between 90 and 95 percent of the total capacity of the tank. Mazda's interpretation of the requirements of this standard is that they are to be met when the vehicle's ignition switch is in the "on" position only. Furthermore, Mazda interprets the vehicles suspension height pursuant to S5.1 and S5.5 to be the intended suspension height for the vehicle given the conditions of S4, i.e., 30 mph veh icle speed and steered wheels are positioned straight ahead.

Question C1: Is Mazda's interpretation of the requirements of FMVSS No. 204 correct?

Question C2: For the purposes of compliance testing to the requirements of FMVSS No. 204, what means of maintaining the intended suspension height for a given vehicle speed and operating condition would be satisfactory to NHTSA?

Appendix D: FMVSS No. 208, "Occupant Crash Protection"

Prologue: This standard establishes performance criteria for the protection of vehicle occupants involved in crashes. Section S5 of this standard establishes occupant crash protection requirements for a range of crash scenarios. Section S8 of this stan dard specifies the testing conditions to be used for frontal, lateral, and rollover compliance testing. Section S8.1.1(d), "Vehicle test attitude," specifies the procedure for determining the vehicle test attitude that is to be used for testing. Specif ically, this section requires that the vehicle's pretest attitude,"...shall be equal to either the as delivered or fully loaded

attitude or between the as delivered and fully loaded attitude." The as delivered attitude is defined by S8.1.1(d) as being,"...the distance between a level surface and a standard reference point on the test vehicle's body, directly above each wheel ope ning, when the vehicle is in its "as delivered" condition. The "as delivered" condition is the vehicle as received at the test site..." Because it is highly likely that the test vehicle will not have been operated for a period of days prior to arriving at the test site, the suspension height may have fallen by "y" mm. The fully loaded attitude is defined as the attitude of the vehicle when loaded in accordance with S8.1.1(a) or (b) and a determination of the height of the suspension at the fully load ed condition is made from the same level surface, using the same standard reference points, as were used to determine the "as delivered" condition. The definition of the "as delivered" condition is quite clear. However, Mazda interprets the "fully load ed condition" of the vehicle to be the condition when the vehicle's ignition is "on". In this instance it is likely that the height of the standard reference points on the vehicles body when in the "fully loaded condition" relative to the level surface will be greater than for the "as delivered" condition. Conversely, conventional vehicle suspension systems will like have an "as delivered" height greater than the "fully loaded" height. However, this fact is of no importance as S8.1.1(d) states that t he pretest vehicle attitude may be,"...between the as delivered and the fully loaded attitude." With respect to the injury criteria specified by section S6 of this standard, Mazda's interpretation is that these criteria must be met with the vehicle's ig nition in the "on" position only.

Section S8.2.7 specifies additional test conditions to be used for lateral moving barrier crash testing. Section S8.2.7(a) states that the vehicle,"...is at rest in its normal attitude." Mazda interprets the meaning of "normal attitude" to be that vehi cle attitude which is intend when the vehicle's ignition is in the "on" condition, with the vehicle loaded pursuant to S8.1.1(a) or (b), and while the vehicle is at rest.

Appendix D (con't): FMVSS No. 208, "Occupant crash protection" Question D1: Is Mazda's interpretation of the definition of the "fully loaded condition" correct with respect to the condition of the ignition switch?

Question D2: Is Mazda's interpretation of the irrelevance of the relative relationship between the "as delivered" and "fully loaded" conditions correct?

Question D3: Is Mazda's interpretation of the meaning of "between the as delivered and the fully loaded attitude" correct?

Question D4: For the purposes of compliance testing to the requirements of FMVSS No. 208, what means of maintaining the intend suspension height for a given vehicle speed and operating condition would be satisfactory to NHTSA? Question D5: Is Mazda's interpretation of the meaning of "normal attitude" correct?

Appendix E: FMVSS No. 212, "Windshield mounting"

Prologue: Customarily, compliance testing to the requirements of this standard is conducted concurrently with compliance testing to the frontal crash requirements of FMVSS No. 208. Therefore, many of the test protocol issues that might be raised in thi s instance have already been raised in Appendix D. Moreover, NHTSA has previously issued an interpretation of this standard with respect to adjustable height suspension systems at the request of Mazda. This interpretation was issued on August 10, 1982. The central premise of NHTSA's interpretation was that the subject vehicle could possibly be operated at two distinct suspension heights at any given vehicle speed. In that instance such a situation was possible because the suspension height was manua lly determined, i.e., established by the operator, thereby justify compliance testing with the vehicle's suspension height adjusted to any position possible or at minimum to the worst case position. However, the ACS system described in the cover letter to these appendices states that the vehicle's suspension height is determined by an on-board electronic controller and not by the vehicle operator. Consequently, only one unique set of suspension height parameters is possible for a given vehicle speed an d loading condition as is the case with conventional suspension systems. Therefore, because it is possible to determine exactly what the intended suspension height should be for a given situation, it is Mazda's opinion that the test vehicle should be te sted at the intended suspension height given the statutory speed and loading requirements. Lastly, the final issue is whether the requirements of FMVSS No. 212 must be met with the vehicles ignition in the "on" or "off" condition, or both. Using a "int ended purpose" argument, Mazda concludes that the requirements of FMVSS No. 212 are to met whenever the vehicle's ignition is in the "on" condition only.

Question E1: Is Mazda's interpretation that NHTSA previously issued interpretation of this standard with respect to adjustable height suspension systems not applicable in this instance given the facts presented?

Question E2: Is Mazda's interpretation of the requirements of FMVSS No. 212 with respect to the state of the vehicle ignition switch correct?

Appendix F: FMVSS No. 219, "Windshield zone intrusion"

Prologue: Customarily, compliance testing to the requirements of this standard is conducted concurrently with compliance testing to the frontal crash requirements of FMVSS No. 208. Therefore, many of the test protocol issues that might be raised in this instance have already been raised in Appendix D. Moreover, NHTSA has previously issued an interpretation of this standard with respect to adjustable height suspension systems at the request of Mazda. This interpretation was issued on August 10, 1982. The central premise of NHTSA's interpretation was that the subject vehicle could possibly be operated at two distinct suspension heights at any given vehicle speed. In that instance such a situation was possible because the suspension height was manual ly determined, i.e., established by the operator, thereby justify compliance testing with the vehicle's suspension height adjusted to any position possible or at minimum to the worst case position. However, the ACS system described in the cover letter t o these appendices states that the vehicle's suspension height is determined by an

on-board electronic controller and not by the vehicle operator. Consequently, only one unique set of suspension height parameters is possible for a given vehicle speed and loading condition as is the case with conventional suspension systems. Therefore, because it is possible to determine exactly what the intended suspension height should be for a given situation, it is Mazda's opinion that the test vehicle should be tested at the intended suspension height given the statutory speed and loading require ments. Lastly, the final issue is whether the requirements of FMVSS No. 219 must be met with the vehicles ignition in the "on" or "off" condition, or both. Using a "intended purpose" argument, Mazda concludes that the requirements of FMVSS No. 219 are to met whenever the vehicle's ignition is in the "on" condition only.

Question F1: Is Mazda's interpretation that NHTSA previously issued interpretation of this standard with respect to adjustable height suspension systems not applicable in this instance given the facts presented?

Question F2: Is Mazda's interpretation of the requirements of FMVSS No. 219 with respect to the state of the vehicle ignition switch correct?

Appendix G: FMVSS No. 301, "Fuel system integrity" Prologue: Customarily, compliance testing to the requirements of this standard is conducted concurrently with compliance testing to the frontal crash and lateral requirements of FMVSS No. 208. Therefore, many of the test protocol issues that might be ra ised in this instance have already been raised in Appendix D. Moreover, NHTSA has previously issued an interpretation of this standard with respect to adjustable height suspension systems at the request of Mazda. This interpretation was issued on Augus t 10, 1982. The central premise of NHTSA's interpretation was that the subject vehicle could possibly be operated at two distinct suspension heights at any given vehicle speed. In that instance such a situation was possible because the suspension heigh t was manually determined, i.e., established by the operator, thereby justify compliance testing with the vehicle's suspension height adjusted to any position possible or at minimum to the worst case position. However, the ACS system described in the co ver letter to these appendices states that the vehicle's suspension height is determined by an on-board electronic controller and not by the vehicle operator. Consequently, only one unique set of suspension height parameters is possible for a given vehi cle speed and loading condition as is the case with conventional suspension systems. Therefore, because it is possible to determine exactly what the intended suspension height should be for a given situation, it is Mazda's opinion that the test vehicle s hould be tested at the intended suspension height given the statutory speed and loading requirements. Lastly, the final issue is whether the requirements of FMVSS No. 301 must be met with the vehicles ignition in the "on" or "off" condition, or both. U sing a "intended purpose" argument, Mazda concludes that the requirements of FMVSS No. 301 are to met whenever the vehicle's ignition is in the "on" condition only.

Section S7.3 of this standard specifies that the test conditions that are to be used during rear moving barrier crash testing are those specified by

section S8.2 of FMVSS No. 208. The issues that might be raised regarding S7.3, therefore, have already been raised in Appendix D.

Question G1: Is Mazda's interpretation that NHTSA previously issued interpretation of this standard with respect to adjustable height suspension systems not applicable in this instance given the facts presented?

Question G2: Is Mazda's interpretation of the requirements of FMVSS No. 301 with respect to the state of the vehicle ignition switch correct?

Appendix H: 49 CFR Part 581, "Bumper Standards" Prologue: The stated scope and purpose of this standard is, "...to reduce physical damage to the front and rear ends of passenger motor vehicles from low speed collisions." NHTSA has previously issued an interpretation of this standard with respect to a djustable height suspension systems. One of these interpretations was issued by NHTSA on February 12, 1985 at the request of a confidential applicant. Another interpretation was issued May 16, 1986 at the request of Subaru of America. In the interpreta tion issued on February 12, 1985, NHTSA states,"...the vehicle is required to meet the pendulum test (581.6(b)) of Part 581 in any vehicle use scenario in which the system operates, and the barrier test (581.6(c)) of Part 581 when the engine is idling." In the subsequent interpretation of 581.6, issued on May 16, 1986, NHTSA states, "Given the absence of a specific test condition concerning suspension height, it is our interpretation that a vehicle must be capable of meeting the standard's damage crite ria at any height position to which the suspension can be adjusted." Consequently, with respect to 581.6(c) these interpretations appear to be in conflict when applying the regulations of Part 581 to the ACS system in that the 1985 interpretation states that the damage criteria must be met at IDLE while the 1986 interpretation states that the damage criteria must be met at ANY height position to which the system can be adjusted. Moreover, the 1985 interpretation infers that the damage criteria for 581 .6(c) must be met when the vehicle's ignition switch is in the "on" condition only. Furthermore, the 1985, with respect to 581.6(b), and 1986 interpretations seem to be in conflict with this standards stated purpose to reduce physical damage to motor ve hicles in LOW speed collisions by requiring bumpers to meet the damage criteria of 581.5 at,"...any vehicle use scenario in which the system operates..."

Question H1: Could NHTSA please provide an interpretation of 49 CFR Part 581 with respect to the ACS system?

ID: nht87-2.75

TYPE: INTERPRETATION-NHTSA

DATE: 08/21/87

FROM: AUTHOR UNAVAILABLE; Erika Z. Jones; NHTSA

TO: Mr. Hisashi Tsujishita

TITLE: FMVSS INTERPRETATION

TEXT:

AIR MAIL

Mr. Hisashi Tsujishita Chief Co-ordinator Technical Administration Department Daihatsu Motor Co., Ltd. l.Daihatsu-cho, Ikeda City Osaka Prefecture JAPAN

Dear Mr. Tsujishita:

Thank you for your letter requesting an interpretation of the requirements of three of our safety standards. This letter responds to your questions concerning Standard No. 201, Occupant Protection in Interior Impact. I have previously responded to your r equests for interpretations of the other two standards. I regret the delay in this response.

Your questions concern the requirements of S3.5.1(b) of the standard, which provides that "Along not less than 2 continuous inches of its length, the armrest shall, when measured vertically in side elevation, provide at least 2 inches of coverage within the pelvic impact area." You expressed concern about determining whether several different armrest designs comply with that requirement. Specifically, you provided three examples and asked how the requirement would apply to each example. Your example I11 .1 is an armrest that, when viewed in side elevation (i.e., a view in which a person is looking from in front or behind an armrest to determine how the armrest projects from the door surface) has a flat surface. Example I11.2 is an armrest that has a sli ghtly curved surface. Example I11.3 is an armrest with a surface that is steeply angled inward toward the door. Because of the angling of the armrest, it has a sharp projection at its top.

You believe that examples I11.1 and I11.2 comply with the requirement of S3.5.1(c). You also believe that example I11.3 would not comply because of its sharp projection. However, you expressed concern about what criteria should be used to distinguish example I11.2 from example I11.3.

S3.5.1(c) of Standard No. 201 does not set any radius of curvature requirements for armrest surfaces. Thus, a manufacturer is not required to provide an armrest with a flat surface. The only requirement is that the armrest provides at least two inches o f coverage within the pelvic impact area. The purpose of the requirement is to reduce potential injuries to an occupant by ensuring that the armrest has a minimum surface area that will spread the force resulting from an occupant impacting the armrest in a crash. Thus, for this requirement to have a meaningful effect, an armrest should be designed to ensure that there is at least two inches of contact between the surface of the armrest and the pelvic impact area of an occupant. If your examples I11.1 an d I11.2 provide two inches of coverage within the pelvic impact area, they would appear to comply, since they present an essentially flat surface. Based on your drawing, it appears that the steep inwardly sloping angle of the armrest shown in example I11 .3 may not contact a minimum of two inches of the pelvic impact area. One method of determining the degree of occupant contact would be to measure the amount of contact between a test dummy and the armrest in a static push test or in a dynamic side impac t test. We share your concern that an armrest not have sharp projections which could concentrate potentially harmful forces on an occupant striking the armrest.

Finally, you provide a drawing of an additional armrest. Briefly described, the armrest has a slightly curved surface with a decreasing radius within the pelvic impact area. At the top of the portion of the armrest within the pelvic impact area there is a small indentation. The agency has previously said, in an interpretation letter of July 1, 1983 to MMC Services, Inc., that bezels and other indentations are not precluded by the standard. However, the area of the indentation will not be measured in det ermining whether the armrest provides two inches of coverage if the indentation is so deep that it cannot be contacted. Based on your drawing, the indentations shown in your proposed armrest is shallow and would be contactable by an occupant. Thus, the s urface area of the indentation would be counted in determining whether the vehicle complied.

Finally, I would point out that S3.5.1(c) is one of three optional means of compliance that manufacturers may choose. A manufacturer may also meet the requirements of Standard No. 201 by complying with either S3.5.1(a) or S3.5.1(b), in which case it is n ot necessary to provide two inches of coverage with the pelvic impact area.

If you have any further questions, please let me know.

Sincerely,

Erika Z. Jones Chief Counsel

Ms. Erika Z. Jones Chief Counsel Office of the Chief Counsel National Highway Traffic Safety Administration 400 Seventh Street, S.W.

Washington, D.C. 20590 U.S.A.

Dear MS. Jones:

The purpose of this letter is to respectfully inquire NHTSA's interpretations with regard to the Federal Motor Vehicle Safety Standards (FMVSS) Nos. 101, 201, and 219.

We wish we could have your early and kind response to the questions on the following pages.

We thank you in advance for your kind attention to this matter.

Sincerely yours,

H. Tsujishita Chief Co-ordinator of Technical Administration Dept. Head Office

Enclosure : QUESTIONNAIRE (1),(2),(3)

cc: Mr. R. Busick, Olson Engineering Inc.

QUESTIONNAIRE (1)

FMVSS No. 101 ; Controls and Displays

Paragraph S5.3.3 of FMVSS No. 101 provides that; "Light intensities for informational readout systems shall have at least two values, a higher one for day, and a lower one for night time conditions. The intensity of any illumination that is provided in the passenger compartment when and only when the h eadlights are activated shall also be variable in a manner that complies with this paragraph." However the applicable items (illuminations) of the above provision are not necessarily definitely for us. we believe that these provisions are applied only to the illuminations for the controls or gauges which are somehow regulated otherwise in FMVSS No. 101, and are,not applied to the illuminations which are optionally equipped and are not otherwise mentioned in the standard, such as following illuminations in Concrete; (1) Digital clock using liquid crystals (2) Radio employed digital frequency indicator using liquid crystals (3) Miscellaneous illuminations for conventional analog clock, cigar lighter, ashtray, and radio control switches, etc. which are lightened only when the headlights (parking lights) are activated.

We would like to confirm that the above items are not applied the variable illumination requirements. Please advise us in detail in this matter.

QUESTIONNAIRE (2)

FMVSS No. 201 ; Occupant Protection in Interior Impact Paragraph S3.5.1(c) of FMVSS No. 201 provides the dimensional requirements for armrests as follows;

"Along not less than 2 continuous inches of its length, the armrest shall, when measured vertically inside elevation, provide at least 2 inches of coverage with the pelvic impact area."

Our concern, however, centers on how to measure the armrest vertically in side elevation.

We believe that this provision does not necessarily require completely plain area of 2 in. x 2 in. on the armrests such as I11.1 below, and that the armrests which have, to some extent, rounded inside surface, such as I11.2, shall be deemed in compliance with this provision.

INSERT GRAPHICS HERE

And we also believe that, no matter how the armrests have more than 2 in. side elevation, considerably sharply projected armrests such as 111.3 shall be deemed in noncompliance with the provision.

However, we can not be sure the criteria for distinguish 111.2 from 111.3. Though we think the most important point to be concerned is its contactability by the occupant, we can not necessary surely know the procedures to prove the contactability. Theref ore we would like to ask your kind favor of showing us the guideline to how to measure armrests to decide the compliancy to S3.5.1(c).

And further, as we are designing a little more complicated shape such as shown on the next page, we wish you would advise us about the compliancy of the armrest. INSERT GRAPHICS HERE

QUESTIONNAIRE (3)

FMVSS No. 219 ; Windshield Zone Intrusion Paragraph S5 of FMVSS No. 219 provides; "When the vehicle ......, no part of the vehicle outside the occupant compartment, except windshield molding and other components designed to be normally in contact with the windshield, shall penetrate the protected zone template, ...." In the case that the windshield wiper penetrate the protected zone template (by some reason such as pushed by the deformed cowl, or accidentally turned-on of wiper switch as a result of contact with test dummy), we would like to confirm whether the vehic le is deemed in compliance or not. (Refer to the illustration below)

We believe the penetration of wiper blades shall be deemed in compliance because the wiper blades are designed to be normally contact with the windshield. The wiper arms, however, only contact with the windshield though the wiper blade. Please advise us about the exemption of wiper arms from this intrusion provision.

INSERT GRAPHICS HERE