ID: nht88-3.43

TYPE: INTERPRETATION-NHTSA

DATE: 09/12/88

FROM: ERIKA Z. JONES -- NHTSA CHIEF COUNSEL

TO: DALLAS MCCLAIN -- PRO TOUR, INC.

TITLE: NONE

ATTACHMT: LETTER DATED 09/21/87 FROM DALLAS MCCLAIN TO OFFICE OF CHIEF COUNSEL, NHTSA, RE CLARIFICATION/INTERPRETATION OF SEATING STANDARDS; OCC-1055

TEXT: Dear Mr. McClain:

This responds to your letter to the National Highway Traffic Safety Administration (NHTSA) asking four questions about the applicability of Safety Standard No. 207, Seating Systems, to buses other than school buses. I regret the delay in responding.

Your first question asks about the agency's definition of a "bus" and a "multipurpose passenger vehicle." You ask how the two definitions differ, and whether the definitions are based on passenger capacity or the gross vehicle weight rating of a vehicle.

A vehicle is classified as either a bus or a multipurpose passenger vehicle based in part on its passenger capacity. Our definitions for the motor vehicle safety standards are set forth in Title 49 of the Code of Federal Regulations, Part 571.3 (copy en closed). In that regulation, we define a "bus" as "a motor vehicle ... designed for carrying more than 10 persons." A "multipurpose passenger vehicle" is defined as "a motor vehicle ... designed to carry 10 persons or less which is constructed either on a truck chassis or with special features for occasional off-road operation."

For your information, the agency is presently reviewing its classification of motor vehicles, in response to a petition for rulemaking from the Insurance Institute for Highway Safety. In October, 1987, NHTSA published an advance notice of proposed rulem aking which discussed various issues raised by the petition. I have enclosed a copy of the notice for your information.

Your second question asks about the requirements of Standard No. 207 applying to side-facing seats and bus passenger seats. You ask whether these seats are exempt from the standard's performance requirements. You also ask whether these seats are "cover ed under another safety standard."

Section S2 of Standard No. 207 provides that the standard applies to buses (among other vehicle types). Section S4.2, General performance

requirements, provides that "(w)hen tested in accordance with S5., each occupant seat other than a side-facing seat or a passenger seat on a bus, shall withstand" specified forces. Passenger seats on a bus are thus excluded from the requirements of section S4.2. However, the driver's seat on a bus is not excluded from the requirements of that section. The testing procedures of section S5 are only relevant to seats which are subject to the general performance requirements of section S4.2.

Similarly, section S4.3, Restraining device for hinged or folding seats or seat backs, provides that "(e)xcept for a passenger seat in a bus or a seat having a back that is adjustable only for the comfort of its occupants, a hinged or folding occupant se at or occupant seat back shall" meet specified requirements. Passenger seats on a bus are thus excluded from the requirements of section S4.3. Assuming that a hinged or folding occupant seat or occupant seat back were provided for the driver, it would n ot be excluded from the requirements of that section unless it had a back that was adjustable only for the comfort of its occupant.

Safety Standard No. 222, School Bus Passenger Seating and Crash Protection, specifies criteria for testing school bus passenger seats. That standard is not applicable to buses other than school buses. The agency does not have any other standards which provide criteria for testing the strength of seating systems of buses. Bus seat cushions and seat backs are, however, subject to the flammability resistance requirements of Safety Standard No. 302, Flammability of Interior Materials.

We answered the first part of your third question, which asks whether "perimeter seating" on a bus is excluded from some Standard No. 207 requirements, in our response to your second question. A passenger seat on a bus is excluded from the standard's ge neral performance requirements (S4.2) and the requirements for a restraining device for the seat back (S4.3). With the exception of Standard 302, there are no performance requirements for seat cushions for passenger seats on a bus other than a school bu s.

With respect to your question whether "perimeter seating" is considered "side-facing," generally seats installed along the vehicle's sides which face the longitudinal centerline of the vehicle are considered side-facing. Seats that face toward the front of rear of the vehicle are not considered side-facing.

Your fourth and final question asks, "While seats not designated for use while the vehicle is moving (MVSS 207, S4.4) must be labeled, must other occupant seating subject to MVSS 207 and MVSS 302 be labeled with a 'law label' indicating the seat has met these standards?"

You are correct that S4.4 of Standard No. 207 requires that seats not designated for occupancy while the vehicle is in motion must be conspicuously labeled to that effect. However, we do not require the extensive labeling you suggest, i.e., we do not re quire that each seat bear a label indicating that the seat complies with applicable requirements of the Federal safety standards. Instead, under the National Traffic and Motor Vehicle Safety Act and NHTSA's regulations, the new vehicle manufacturer cert ifies that a vehicle complies with all

applicable Federal motor vehicle safety standards, including Standards No. 207 and No. 302, by affixing a single label of the type and in the manner set forth in the agency's certification regulation, 49 CFR Part 567. For your convenience, I have en closed a copy of Part 567 and information on how you can obtain copies of other NHTSA regulations and standards.

I hope this letter is helpful. Please contact us if you have further questions.

ENCLOSURES

ID: nht88-3.44

TYPE: INTERPRETATION-NHTSA

DATE: 09/12/88

FROM: ERIKA Z. JONES -- NHTSA

TO: STEVE ZLOTKIN -- OVERLAND PARTS, INC.

TITLE: NONE

ATTACHMT: LETTER DATED 12/08/87 FROM STEVE ZLOTKIN TO ERIKA Z. JONES, OCC 137

TEXT: Dear Mr. Zlotkin:

This is in response to your letter seeking an interpretation of Standard No. 205, Glazing Materials (49 CFR @ 571.205). Specifically, your letter stated that your company would like to import some non-laminated windshields into the United States. I apo logize for the delay in our response. As explained below, your company is prohibited by Federal law from importing or selling this type of windshield because it does not comply with the requirements of Standard No. 205.

Standard No. 205 establishes performance and marking requirements for all glazing installed in motor vehicles. The standard incorporates by reference the requirements of Standard ANS z-26, "Safety Code for Safety Glazing Materials for Glazing Motor Vehi cles Operating on Land Highways," of the American National Standard Institute. Standard ANS Z-26 requires that glazing materials for windshields must pass a specified group of test requirements. ANS Z-26 specifies that glazing materials that comply wit h these test requirements for windshields must be marked AS-1. To date, the only glazing materials that have been marked AS-1 have been laminated safety glass. Unless your non-laminated windshields can meet the requirements for AS-1 glazing and are mar ked AS-1, they do not comply with the requirements for windshields specified in Standard ANS Z-26 or Standard No. 205. You also should be aware that Standard No. 205 permits glass-plastic glazing.

The importation and sale of noncomplying glazing would be a violation of the National Traffic and Motor Vehicle Safety Act ("Safety Act"), the statute under which Standard No. 205 was issued. Section 108(a)(1)(A) of the Safety Act provides:

No person shall manufacture for sale, sell, offer for sale, or introduce or deliver for introduction in interstate commerce, or import into the United States, any motor vehicle or item of motor vehicle equipment manufactured on or after the date any a pplicable Federal motor vehicle standard takes effect under this title unless it is in conformity with such standard...

Your letter set forth two interpretations of the law under which you suggested that your company might be able to import noncomplying windshields. Your first interpretation relied on the fact that these windshields can only be installed in vehicles that were manufactured between 1953 and 1967. Since Standard No. 205's requirements for windshields did not become effective until January 1, 1968, you suggested that the provisions of section 108(a)(1)(A) of the Safety Act might not apply, because no safet y standards were applicable to these vehicles. This suggestion is incorrect.

All windshields manufactured on or after January 1, 1968 must comply with the requirements of Standard No. 205, regardless of the year of manufacture of the vehicle on which the windshield is designed to be installed. In fact, safety standards relating to components such as brake hoses, lighting equipment, tires, glazing materials, seat belt assemblies, and wheel covers are applicable to components manufactured on or after January 1, 1968, even if those components are manufactured for motor vehicles ma nufactured before that date. In a January 16, 1987 interpretation letter to Mr. Peter Cameron-Nott (copy enclosed), the agency stated that the above listed component parts including glazing materials that were manufactured on or after January 1, 1968, w ould have to comply to the relevant safety standards (in the case of glazing, Standard No. 205) even though the underlying motor vehicle was a 1965 Jaguar.

Assuming that the non-laminated windshields that were the subject of your letter were in fact manufactured after January 1, 1968, Standard No. 205 applies to those windshields. As already noted, Section 108(a)(1)(A) of the Safety Act prohibits your comp any from importing any windshields that are subject to Standard No. 205 that do not comply with that standard.

Your second suggestion is that your company would be willing to place a sticker on these windshields to warn purchasers that the windshields do not comply with Standard No. 205. The Safety Act contains no exception to section 108(a)(1)(A)'s prohibition for noncomplying equipment, even if it were to be labeled as noncomplying. Hence, section 108(a)(1)(A) prohibits the importation of noncomplying windshields without regard to any warning labels on the windshields.

I hope this information is helpful.

ENCLOSURE

ID: nht88-3.45

TYPE: INTERPRETATION-NHTSA

DATE: 09/12/88

FROM: NANCY F. MILLER -- US DEPARTMENT OF TRANSPORTATION

TO: BEVERLY B. BYRON -- U. S. HOUSE OF REPRESENTATIVES

TITLE: NONE

ATTACHMT: ATTACHED TO LETTER DATED 10/27/88 FROM ERIKA Z JONES TO BEVERLY B BYRON; REDBOOK A 32, STANDARD 205; LETTER DATED 08/25/88 FROM BEVERLY B BYRON T. NANCY MILLER; MEMORANDUM DATED 08/14/83 FROM C. RICHARD FRAVEL TO WHOM IT MAY CONCERN RE JOSEPH C IAMPA JR; MEMORANDUM DATED 08/04/88 FROM ARTHUR J. LOMART TO WHOM IT MAY CONCERN; LETTER DATED 08/01/88 FROM C.E. SHUE TO JOSEPH CIAMPA RE 0590630; LETTER DATED 08/24/88 FROM JOSEPH L. CIAMPA TO BEVERLY B. BYRON

TEXT: Dear Ms. Byron:

Thank you for your letter forwarding correspondence from your constitutent, Mr. Joseph L. Ciampa, Jr.

I have transmitted your inquiry to the appropriate Departmental officials who are familiar with this matter and they will respond to you directly.

I appreciate your contacting me and hope you will not hesitate to call if I can be of any further assistance.

ID: nht88-3.46

TYPE: INTERPRETATION-NHTSA

DATE: 09/12/88

FROM: RUSSELL A. STORMS

TO: NAC EXECUTIVE DIRECTOR OFFICE OF TRAFFIC OPERATIONS FEDERAL HIGHWAY ADMINISTRATION

TITLE: NONE

ATTACHMT: ATTACHED TO LETTER DATED 08/17/89 FROM STEPHEN P. WOOD -- NHTSA TO RUSSELL STORMS; REDBOOK A34; STANDARD 125; VSA 108[B]; LETTER DATED 09/23/88 FROM HARRY B. SKINNER -- DOT TO RUSSELL A. STORMS

TEXT: Dear Sir or Madam:

We are writing pursuant to Section IA-6 of the Manual on Uniform Traffic Control Devices to obtain recognition for a new device designed to warn motorists of a hazardous situation.

We have a patent pending on a multiple-sided emergency traffic warning marker that is designed to be employed by a motorist immediately prior to the employment of flares or other warning devices. The marker is basically a tetrahedral configuration, cont oured and proportioned to ensure a warning display to oncoming vehicles when the marker is placed on a roadway surface (drawing attached).

The marker is basically of a "bean bag" nature that is foldable and stackable for easy transportation and storage in the vehicle when not in use and which is of relatively low cost so that a plurality of markers may be economically carried and deployed b y the vehicle driver. It is seven (7) inches in height and made of reflective material.

The primary advantage of this marker is that it can be employed quickly in the event of an emergency by a motorist and is not of an incendiary nature and can be safely stored in the passenger compartment of a vehicle. It is our opinion that this particu lar marker affords a measure of protection not available by other products currently available and would represent an improvement in traffic safety.

In closing, if we intend to bring this product to market, it is our understanding that your organization is the appropriate forum for approval of this product. Please advise us of a proper course of action necessary to gain this approval.

Thank you for your help.

Sincerely,

[DRAWING OMITTED]

ID: nht88-3.47

TYPE: INTERPRETATION-NHTSA

DATE: SEPTEMBER 12, 1988

FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA

TO: M. IWASE -- MGR., TECHNICAL ADMINISTRATION DEPT., KOITO MFG. CO., LTD. TITLE: NONE

ATTACHMT: ATTACHED TO LETTER DATED 4-9-90 TO M. IWASE FROM STEPHEN P. WOOD; (A35; STD. 108). ALSO ATTACHED TO LETTER DATED 10-18-89 TO ERIKA Z. JONES FROM M. IWASE AND LETTER DATED 4-8-88 TO ERIKA Z. JONES FROM M. IWASE. TEXT:

This is in reply to your letter of April 8, 1988, with respect to the agency's proposed S7.7.5.2 of Standard No. 108, on-vehicle aiming requirements which would include a Vehicle Headlamp Aiming Device (VHAD). This was proposed on December 29, 1987, as Notice 5 to Docket 85-15.

You have asked whether two designs contemplated by Koito comply with the VHAD as proposed. With respect to the second design, "Structure-2", you requested that it be considered confidential as it involves a Koito idea related to a patent application. However, you withdrew that request on June 9, 1988.

With respect to your two designs, you appear to have understood that the agency's intent in the proposal was to provide broad parameters for VHADs to afford manufacturers design freedom in meeting the specifications. Under S7.7.5.2 it is the headlamp system that "includes" a VHAD, rather than "incorporates' it. Under subsection (b)(7) photometric testing is provided for "The VHAD and headlamp assembly (if the headlamp is separable or intended to be used with the VHAD)...." This means that the VHAD may be integral with the headlamp assembly, or separate from it (though presumably provided with the vehicle as part of its original equipment), as fits the manufacturer's design. Each of your designs complies with the intent of S7.7.5.2; however, I must emphasize that this is only a proposal, and the form of a final requirement, if any, has not been determined.

We have further comments about your devices. Structure 1 incorporates a stationary lens and housing, but the reflector is adjustable. The lamp must be designed to conform to the photometric requirements of Standard No. 108 with the reflector in any position within the proposed aimability range of +/- 4 degrees vertical and +/- 2 1/2 degrees horizontal, or any combination thereof. Structure 2 features a detachable spirit level which is inserted when the replaceable bulb is removed from the headlamp. Although the proposal does not specifically prohibit this feature, the test procedures do not anticipate a VHAD design where the light source would be removed and replaced with the VHAD.

I hope that this answers your question.

ID: nht88-3.48

TYPE: INTERPRETATION-NHTSA

DATE: 09/13/88 EST

FROM: ERIKA Z. JONES -- CHIEF COUNSEL, NHTSA

TO: ROBERT W. STUCHELL

TITLE: NONE

ATTACHMT: LETTER DATED 4-30-88, TO MR. VINSON FROM, ROBERT W. STUCHELL, OCC-1973

TEXT: This is in reply to your letter of April 30, 1988, to Mr. Vinson of this Office as to the existence of Federal or State regulations "governing sale and/or use of lighted signs of any shape placed on the inside of the rear window of aftermarket cars. Suc h signs would not be connected with any new car purchase."

The Department of Transportation has no restriction on the sale of signs for use inside motor vehicles. Nor are there any Federal regulations that would prevent an owner from installing or using such signs. However, if the sign were of such a nature th at it is intended to be installed by a dealer or motor vehicle repair business, the installer must insure that its installation does not render inoperative in whole or in part any device installed on the vehicle pursuant to a safety standard. For exampl e, if the sign is installed on a passenger car equipped with a center highmounted stop lamp, the sign must not block the light from the lamp, or operate in a manner so as to cause confusion with it. Its installation must not affect the wiring of the oth er lighting equipment. Other safety problems such a sign might create are a partial blockage of view through a rear view mirror, or the creation of light on the rear window, resulting in glare in the rear view mirror.

We are not in a position to advise you as to the acceptability of the device under State law. You may wish to consult the American Association of Motor Vehicle Administrators, 4600 Wilson Boulevard, Arlington, VA 22203 for advice.

ID: nht88-3.49

TYPE: INTERPRETATION-NHTSA

DATE: 09/13/88

FROM: GLENDA SWANSON LYLE -- DIRECTOR REGIONAL TRANSPORTATION DENVER COLORADO; JACK MCCROSKEY -- DIRECTOR REGIONAL TRANSPORTATION DISTRICT D DENVER COLORADO

TO: LARRY COOK -- SAFETY STANDARDS ENGINEER NHTSA

TITLE: NONE

ATTACHMT: ATTACHED TO LETTER DATED 12/09/88 TO JACK MCCROSKEY AND GLENDA SWANSON LYLE FROM ERIKA Z. JONES REDBOOK A33, STANDARD 119; LETTER DATED 08/26/88 TO MARVIN ORNES FROM R.E. MORGAN; LETTER DATED 09/09/87 TO R ROGERS FROM R.E. MORGAN, RE GOODYEAR M ILEAGE TIRES

TEXT: Dear Mr. Cook:

Thanks so much for talking with me this morning. The issue, as I'm sure you will recall, concerns the disparity between the "labeling" and the "use" of tires the Goodyear Corporation leases to Denver's Regional Transportation District for use on its fle et of approximately 750 transit buses.

By way of brief background, let me say that the RTD is an independent unit of local government, established by the Colorado General Assembly, and governed by a fifteen-person Board of Directors. The Directors, who are elected by the voters of the distri ct for four-year terms, have full legal responsibility for operating the District. The Directors hire a General Manager who is given day-to-day authority and who reports to the Board. I'm enclosing a small booklet giving some of the District's operatin g statistics for 1987.

The District provides three types of service:

1. Local. These buses operate primarily in areas where the speed limit is 35 miles per hour. However, these buses do operate for short portions of their routes where the limits range from 40 to 45 and even up to 55 miles per hour.

2. Express. These buses operate mainly--70% to 80% of the time--on local freeways where the speed limits are 55 miles per hour. Some small portion of their routes may be in 65 mile per hour limits.

3. Regional. These operate primarily in freeways where the limits run from 55 to 65 miles per hour.

2

My most pressing question for now concerns the Express buses. The tires Goodyear furnishes RTD for Local and Express use are called DXT and XT tires. The DXT tires have a maximum speed of 35 miles per hour marked on them; the XT tires have a maximum spe ed of 55 miles per hour on them.

RTD is currently using the DXT (35 miles) and the XT (55 miles) almost interchangably on the Express buses. (That is, RTD is using tires marked maximum speed 35 miles on routes where much, probably most, of the travel is at 55 miles per hour).

I am enclosing one memo and one letter, both of which are purportedly from Goodyear, saying that this practice may be acceptable. Please note that neither document is on Goodyear stationery and that neither document has the full signature of the author, or gives the author's official position in the company.

Some of us here at RTD are very much worried about the use of tires contrary to their labeling on buses carrying 40 to 70 passengers. We are also concerned by RTD's liability should an accident owing to tire failure occur.

Could you please, at your earliest possible convenience, let us know your view of the possible safety hazards and our possible legal liabilities. We would also like, should you be in a position to give it, your advice on what we should do. Should we co ntinue to use the tires contrary to their labeling? Or should we act to bring usage in conformity to labeling.

We look forward to your reply. We think quick action is essential.

Cordially,

ENCLOSURES

(Regional Transportation District Report omitted.)

ID: nht88-3.5

TYPE: INTERPRETATION-NHTSA

DATE: 08/15/88

FROM: ERIKA Z. JONES -- CHIEF COUNSEL NHTSA

TO: LOUIS F. KLUSMEYER -- SENIOR RESEARCH SCIENTIST VEHICLE RESEARCH AND DEVELOPMENT, SOUTHWEST RESEARCH INSTITUTE

TITLE: NONE

ATTACHMT: LETTER DATED 07/11/88 TO TAYLOR VINSON FROM LOUIS F KLUSMEYER, OCC - 2275; Std. 108

TEXT: Dear Mr. Klusmeyer:

This is in reply to your letter of July 11, 1988, to Mr. Vinson of this office with reference to a "deceleration" or "pre-braking" concept.

As you presently envision the implementation of this concept, an amber lamp would be activated when the driver's foot is removed from the accelerator pedal, and would be extinguished automatically when the driver reapplies pressure to the accelerator ped al. You believe that the optimum location appears to be immediately adjacent to the center highmounted stoplamp. You believe further that this location has already been considered by NHTSA for this purpose, and ask whether it is precluded by Standard N o. 108.

Your belief is based upon the Federal Register notice of October 1983 adopting the center highmounted stoplamp, which stated that "Other types of lamps or added functions such as deceleration signals may be desirable and should be investigated." However, this was in the context of alternatives to adoption of the center lamp, and relates to the agency's statement in the same paragraph that "with additional research, more nearly optimum specifications for stoplamp configurations may be developed." Indeed, the agency made it quite clear in prohibiting combining the center lamp with any other lamp or reflector (paragraph S4.4) that no added functions were contemplated or desirable.

Under paragraph S4.4 therefore, a deceleration lamp and the center stop lamp could not be combined. S4.4 would not prohibit an amber lamp adjacent to the center lamp. However, paragraph S4.1.3 prohibits optional lighting equipment if it would impair th e effectiveness of lighting equipment required by Standard No. 108. Your letter indicates that the deceleration signal is deactivated by renewed pressure on the accelerator pedal (and not by pressure on the brake pedal) so that a following driver would be presented with both amber and red signals, creating the possibility of confusion, and hence impairment. You have not indicated whether the deceleration lamp would be steady-burning or

2 flashing, but we believe the possibility of confusion would increase were the lamp flashing. However, were the lamp to be extinguished when the brake pedal is applied (which activates the stop lamps), then the possibility of confusion would be substan tially lessened. With respect to deceleration warning systems, last year the Flxible Corporation determined that a system installed on its buses created an impairment, and hence a noncompliance with paragraph S4.1.3. The company then conducted a notific ation and remedy campaign (87V-089) as required by statute. The company concluded that its flashing amber deceleration lamps could create confusion when activated simultaneously with the red steady burning stoplamps.

I hope that this answers your question.

Sincerely,

ID: nht88-3.50

TYPE: INTERPRETATION-NHTSA

DATE: SEPTEMBER 14, 1988

FROM: RICHARD W. WARD -- VICE PRESIDENT; K-D LAMP COMPANY

TO: ERIKA Z. JONES -- NHTSA

ATTACHMT: LETTER DATED NOV. 3, 1988 TO RICHARD W. WARD, V. P., K-D LAMP CO., FROM ERIKA Z. JONES, CHIEF COUNSEL, NHTSA

TEXT: This is in reference to your letter of Aug. 19, 1988 to Paul Scully regarding the exclusion of reflex reflector area when calculating minimum square inch lens area. Apparently your letter has caused a future customer of KD Lamp Co. to reconsider and rej ect the use of a Turn Signal Lamp of ours which has a lens area of 8 square inches. The following information and enclosed documentation is offered for your evaluation, and I respectfully request your reply to clarify the requirement of minimum square i nch lens area for Turn Signal and Stop Lamps.

In S1. of Purpose & scope FMVSS 108 the standard covers requirements for original and replacement lamps. When a new lamp is designed the requirements of 108 in effect at that time are naturally incorporated into the design. The present requirements of 108 shown in Table #1 for vehicles 80 or more inches wide indicates the applicable SAE standard is J-588e Sept. 1970 for Turn Signal Lamps and J-586c Aug. 1970 for Stop Lamps. Both of these SAE standards in section 3.2 require a minimum lens area of 8 s quare inches (rear lamps) for a single compartment lamp. The device in question meet the J-588e and J-586c, however, our customer has interpreted your letter that 12 square inch minimum lens area is the requirement. Their conclusion is based on the 2nd paragraph of your letter wherein you make reference to S4.1.1.7 of FMVSS 108 and 12 square inch lens area.

It is our position that S4.1.1.7 and S4.1.1.6 of FMVSS 108 is not the present requirements but rather an exception or a permissable use of an old SAE J-588d June 1966 and J-586b June 1966 for lamps used on vehicles manufactured between 1973 and 1978 (ref . page 28238 Fed. Reg. Aug. 6, 1986). If the full context of S4.1.1.7 and S4.1.1.6 is taken into consideration it is apparent the intent, particularly the words "may also be designed", of these sections is to cover vehicles of older manufacture.

After your review of the above and attachments, I would appreciate your comments so the immediate problem as well as any future questions in this regard can be resolved.

Thank You.

ID: nht88-3.51

TYPE: INTERPRETATION-NHTSA

DATE: SEPTEMBER 14, 1988

FROM: AL CUNNINGHAM -- CHIEF ENGINEER WESTBAR CORPORATION

TO: ERIKA JONES -- CHIEF COUNSEL D.O.T.

TITLE: INTERPRETATION OF SAE DEFINITIONS AS THEY APPLY TO FMVSS 108

ATTACHMT: LETTER DATED NOV. 3, 1988 TO AL CUNNINGHAM, CHIEF ENGINEER, WESTBAR CORPORATION, FROM ERIKA Z. JONES, CHIEF COUNSEL, NHTSA

TEXT: We are writing your office requesting official clarification of definitions referred to in SAE J588e as it applies to FMVSS 108. The definition in question is, 2.2 "Multiple Compartment Lamp" and the term used in 3.1 "Single Compartment Lamp".

With this request, we are furnishing two lamps as examples, one identified as 3504 exp. and the second as 3504. The first sample (3504 exp.) has a housing with back and four sides containing a two filament bulb with a single lens covering face of hou sing. This lamp photometrically complies to the basic requirements of a class "A" tail, stop and turn lamp. Would the sample submitted as described above be defined as a single compartment lamp?

The second sample has a housing with a back, two sides and one end, containing one #57 bulb and one #1157 (2 filament) bulb. This housing is closed with two red lenses, one on the end and one on the face with an additional clear lens on bottom side. This lamp also complies to all standards of a class "A" tail, stop and turn lamp plus side marker clearance, license plate illuminator and class "A" reflex side and rear. Would the sample, as submitted and described, be defined as single compartment la mp?

Thank you for reviewing our requests. We look forward to receiving your interpretation of these definitions as they apply to our questions and samples furnished.

Enclosures - 2 samples