ID: nht78-3.22

DATE: 10/02/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Ward Industries, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your August 22, 1978, letter asking whether your proposed emergency door label complies with the requirements of Standard No. 217, Bus Window Retention and Release.

Paragraph S5.5.3 requires that each school bus emergency exit shall have the designation "Emergency Exit" or "Emergency Door" as appropriate, in letters at least 2 inches high, of a color that contrasts with its background, located at the top of or directly above the emergency exit on both the inside and outside surfaces of the bus. The label that you propose would be located on the inside of the glass but would be visible from the outside of the vehicle.

The National Highway Traffic Safety Administration (NHTSA) has indicated in the past that the location of the emergency exit label can be directly above or on the top half of the emergency exit. Your location near the top of the glass on the rear emergency door appears to fall within this acceptable area. The standard further requires that the label be located on both the inside and outside surfaces of the bus. The intent of this requirement is to provide a visible emergency exit designation on both the inside and outside of a bus. Since your label would be visible outside the school bus even though its location would be on the inside of the glass, the NHTSA concludes that it complies with this requirement. In reaching this conclusion, the agency assumes that you will have a similar label that will be visible inside the bus.

In summary, since your described label is the required size, consists of contrasting colors, and is placed in the appropriate location, it appears to comply with the requirements of Standard No. 217.

SINCERELY,

WARD Industries Inc.

August 22, 1978

Joseph J. Levin, Jr. Chief Counsel National Highway Traffic Safety Admn.

Ref: FMVSS 217

Dear Sir:

A drawing showing proposed location of the emergency door identification label is enclosed. Paragraph S5.5.3 requires the designation "emergency door" or "emergency exit" as appropriate, in letters at least two inches high of a color that contrasts with its background, located at the top of or directly above the emergency exit on both inside and outside surfaces of the bus.

This decal would be placed on the inside surface of the glass but would be viewed from the outside. The lettering would be black on a solid white background.

Please review this and advise if this will meet requirements of Paragraph S5.5 of FMVSS 217.

E. M. Ryan, Chief Design Engineer

EMERGENCY DOOR

2" BLACK LETTERS ON WHITE BACKGROUND PRESSURE SINSITIVE DECAL

NOTE: DETAIL VIEW 1/4 SCALE

WARD

SCHOOL BUS MFG., INC. P.O. BOX 311 HIGHWAY 65 CONWAY, ARKANSAS 72032

OUTSIDE EMERGENCY DOOR DECAL LOCATION

DATE

CHK

DRAFT: (Illegible Word)

ENGR: SCALE N OR PART ORDER NO. REV CHANGE BY DATE ENGR (Illeg.) (Illeg.) PER BUS (Illeg.)

(Graphics omitted)

ID: nht78-3.23

DATE: 02/14/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Collins Industries, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your November 15, 1977, letter asking several questions concerning Standard No. 217, Bus Window Retention and Release.

In your first question, you paraphrase the requirements of S5.3.3 concerning emergency exit force requirements and release motion and ask whether your understanding of the section is correct. Your interpretations of the standard's requirements are accurate.

Second, you enclosed photographs of a manufacturer's rear emergency door release mechanism and asked whether it complies with the standard's requirements. The force release mechanism shown in the pictures does not comply with the requirements of Standard No. 217. The release mechanism is not located in the high force access region as required by the standard, and the motion required for release of the exit is not upward as required by paragraph S5.3.3

Finally, you asked whether your enclosed copy of Standard No. 217 which includes paragraph S5.2.3.1 is up-to-date. The answer to your question is yes. You have been confused by paragraph S5.2.3.1 because it states that a bus must have, at a minimum, one rear emergency door or a side emergency door and a rear push-out window. The requirement for one rear emergency door does not preclude a schoolbus with a 10,000 pound GVWR or less from using two (double) rear emergency doors. Paragraph S5.4.2.2 states ". . . the opening of the rear emergency door or doors shall be . . ." (Emphasis added). The use of the term "doors" in paragraph S5.4.2.2 indicates that double doors are permitted.

ID: nht78-3.24

DATE: 09/22/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Thomas Built Buses, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your August 21, 1978, letter asking whether you are permitted under Standard No. 217, to place the emergency exit sign at the bottom of a rear emergency window exit.

The National Highway Traffic Safety Administration has permitted the use of the emergency exit sign to be on the top half of rear emergency doors. This has permitted the sign to be located just below the glass on the rear emergency door. Although your location of the exit sign is not on top of the rear emergency window exit, its location is similar to the location of the exit sign on a rear emergency door. Since the location of the sign is on the emergency window exit and is within the top half of the bus, the agency has determined that this location complies with the requirements.

SINCERELY,

Thomas BUILT BUSES, INC.

August 21, 1978

Office of the Chief U. S. Department of Transportation

Attn: Roger Tilton

Subject: MVSS - 217. Section S5.5.3 - School Bus

Reference is made to our conversation relative to the above.

In that conversation, we discussed the location of the sign "Emergency Exit".

We are enclosing a photo of what we were describing the location of the sign. According to the writer, the location as depicted in the photo is permissable. As we pointed out, this location, in our opinion more closely covers the intent of the section.

On this point, we understand you concurred. We would appreciate confirmation of this concurrance for the record.

James Tydings, Specifications Engineer

(Graphics omitted)

ID: nht78-3.25

DATE: 10/02/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Thomas Built Buses, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your August 25, 1978, letter asking what the term "normal nighttime illumination" mean in Standard No. 217, Bus Window Retention and Release.

The term "normal nighttime illumination" is found in paragraph S5.5.2 of the standard. This section requires that all interior exit instructions be legible when the only source of light is the normal nighttime illumination of the vehicle. The term, as used in this paragraph, means that exist instructions must be visible with the normal interior vehicle lighting that is in use when the bus is moving. Interior vehicle lighting may include, for example, reading lamps and overhead lights.

SINCERELY,

Thomas BUILT BUSES, INC.

August 25, 1978

Office of the Chief Counsel U.S. Department of Transportation

Attn: Roger Tilton

Subject: MVSS 217, Section S5.5.2 - School Bus

Dear Mr. Tilton:

We are inquiring if a definition has been given to the phrase "Normal Nighttime Illumination".

Our interpretation is that the interior lights in the vehicle constitude "Normal Nighttime Illumination".

We are most interested in hearing from you in this matter.

James Tydings, Specifications Engineer

ID: nht78-3.26

DATE: 02/14/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr,; NHTSA

TO: Thomas Built Buses

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your December 8, 1977, letter asking for an interpretation of the term "passenger compartment" as used by the National Highway Traffic Safety Administration (NHTSA) in Standard No. 217, Bus Window Retention and Release.

Standard No. 217 requires that a school bus side emergency door be located in the rear half of the bus passenger compartment. The NHTSA interprets the term "passenger compartment" to mean the area from the windshield to the back of the bus.

In a companion question, you ask whether it would be permissible for a small portion of a side emergency door, installed pursuant to S5.2.3.1(b), to fall within the front half of a bus as long as most of the door is within the required rear half of the passenger compartment. The answer to your question is no. The emergency door must be totally located within the rear half of the passenger compartment.

SINCERELY,

THOMAS BUILT BUSES, INC.

December 8, 1977

Office of the Chief Counsel U.S. Department of Transportation

Attn: Roger Tilton

Subject: School Buses - Emergency Door, Location of

Re: Federal Motor Vehicle Safety Standard 217, Bus Window Retention and Release, Section S5.2.3.1(b)

The above referenced section states: "One emergency door on the vehicle's left side that is in the rear half of the bus passenger compartment . . . .etc."

Several questions have arisen regarding the quoted portion of the standard, and we would appreciate an answer to these questions. We have included prints to help explain our inquiries.

1. Passenger Compartment: From what point to what point longitudinally is the passenger compartment measured? As can be seen on the print the passenger compartment may vary depending on what is definition of the passenger compartment.

Is it from the windshield to the rear of the bus (1/2L + 1/2L), or from the back of the front barrier to the rear of the bus? (1/2R + 1/2R) NOTE: For clarity, we have shown these measurements on opposite sides of the bus. Also for your information the State of New York measures (1/2L + 1/2L) or glass to glass as it is commonly called.

Our prime purpose of the inquiry is that the State of Washington requires that the side emergency door be located in front of the rear axle. In certain cases this is impossible, and still meet your requirement of FMVSS 217-S5.2.3.1(b). We realize that Federal Standards take precedent over the State Standard yet on certain models, due to the module construction, a portion of the door impinges upon the forward section of the passenger compartment. Is this permissible?

Areas marked W/H are wheelhouses, and no side emergency door may be installed in these area and comply with FMVSS 217-S5.4.2.1.(b).

If we may be of further assistance, kindly advise.

James Tydings, Specifications Engineer

ID: nht78-3.27

DATE: 02/14/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Ward Industries, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your December 14, 1977, letter asking whether the rear push out window emergency exit option in Standard No. 217, Bus Window Retention and Release, is limited to rear-engine school buses.

The National Highway Traffic Safety Administration (NHTSA) initially proposed that this option be restricted to rear-engine school buses. Comments to that rulemaking, however, persuaded the agency to permit the use of these emergency exits on all school buses regardless of the location of the engine or passenger seats. That determination was explained in the preamble to the final rule published on June 3, 1976 (41 FR 22356) (enclosed).

I trust that this fully responds to your question.

SINCERELY,

WARD Industries, Inc.

December 14, 1977

Joseph Levin, Chief Office of Chief Counsil National Highway Traffic Safety Admn.

Re: FMVSS 217

Dear Mr. Levin:

Paragraph S5.2.3.1(b) and referenced Figure 3C of FMVSS 217 permits the use, as a manufacturer's option, one emergency door on the vehicle left side and a pushout rear window (16 inches x 48 inches).

Does this standard permit the use of this rear window in other than rear engine type vehicles? We have had requests from schools to manufacture a conventional school bus equipped with the above combination of emergency exits.

Since Figure 3C of referenced FMVSS shows a rear shelf between the rear seat and the rear wall, does this prohibit the use of the rear pushout window when seats are located all the way to the rear wall?

An early response to this petition for clarification will be appreciated.

E. M. Ryan, Chief Design Engineer

cc: BUD RYAN; JAMES STRAUB

ID: nht78-3.28

DATE: 03/22/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Midland Machinery Company, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to Midland Machinery Company's February 20, 1978, request for confirmation that Standard No. 121, Air Brake Systems, does not apply to an air-braked trailer that carries no cargo and consists entirely of a portable mixing plant.

Section S3 of Standard No. 121 contains an exclusion for any trailer whose unloaded vehicle weight is not less than 95 percent of its gross vehicle weight rating (GVWR). "Unloaded vehicle weight" means the weight of a vehicle with maximun capacity of all fluids necessary for operation of the vehicle, but without cargo or occupants. You state that the portable mixing plant trailer carries no cargo, and it would thus be excluded from the requirements of Standard No. 121.

Enclosed are copies of Standard No. 108 and 120, along with an information sheet that explains how copies of these and other NHTSA regulations may be obtained.

ID: nht78-3.29

DATE: 04/14/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Grove Manufacturing Co.

TITLE: FMVSS INTERPRETATION

TEXT:

NOA-30

Mr. R. G. Wilkins Product Safety and Reliability Grove Manufacturing Co. Shady Grove, Pennsylvania 17256

Dear Mr. Wilkins:

This responds to your recent letter asking whether plastic glazing materials may be used on the superstructure operator cabs of mobile construction cranes. Apparently, the upper superstructure cab is used only for craning operations and is distinct from the cab used to drive the crane over public highways.

Under Federal Motor Vehicle Safety Standard No. 205, Glazing Materials (49 CFR Part 571.205), plastic glazing may be used only in locations to the rear of the driver in trucks or truck tractor cabs and only at levels not requisite for driving visibility. Therefore plastic glazing could not be used in the windshield or windows to the right or left of the driver in the main driving cab of the mobile crane. It is our interpretation, however, that the superstructure operator cab is, effectively, to the rear of the driver when the vehicle is being used on the highway and could be equipped with plastic glazing materials meeting the requirements of Standard No. 205. This interpretation assumes that the operator cab cannot be used to drive the mobile crane on the highway. If the operator cab could be used as the driving cab, plastic glazing could only be used in locations to rear of the driver at levels not requisite for driving visibility.

Please contact this office if you have any questions concerning this interpretation.

Sincerely,

Joseph J. Levin, Jr. Chief Counsel

Ref: PSR-2727

February 23, 1978

U.S. Department of Transportation National Highway Traffic Safety Administration (NHTSA) Washington, D.C. 20590

Attention: Office of Legal Counsel

Subject: Request for Interpretation on Use of Plastic Glazing Materials on Superstructure Cabs Applicable to Mobile Hydraulic Cranes.

Reference: (a) FMVSS-205 (b) Z26.1-1966

Dear Sir:

For the past few years our distributors, predicated on user input, has requested Grove to consider the installation of various plastic glazing materials in our (upper) superstructure operator cabs to aid in the prevention of vandalism at their yards and construction job-sites as well as reducing machine "down-time" for glass replacement.

For your edification, we have included two typical carrier-mounted hydraulic crane sales brochures to be utilized as an aid to better understand our design characteristics and positioning of our superstructure cabs. Grove Manufacturing Company feels that an official interpretation from your office is required prior to any action on our part to install a glazing material other than glass inasmuch as Grove does certify to meet all Federal Motor Vehicle Safety Standards (FMVSS) on the date of manufacture.

Our interpretation of FMVSS-205 precludes the use of plastic materials as glazing other than to the rear of the driver, however, our superstructure cab is utilized strictly for craning operations on an off-highway configuration and while "roading" the crane over public highways the upper mode is unoccupied.

If clarification or further information is required to aid in forming an official NHTSA opinion on this matter, please do not hesitate to contact us.

May we thank you in advance of any consideration given in this matter.

Very truly yours,

GROVE MANUFACTURING COMPANY

R. G. Wilkins Product Safety & Reliability Analyst

RGB/cds

Encl.

ID: nht78-3.3

DATE: 09/13/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Department of Transportation - Rhode Island

TITLE: FMVSS INTERPRETATION

TEXT: I regret the delay in answering your letter. This responds to your questions concerning the recent amendment of Safety Standard No. 205, Glazing Materials, that permits the use of rigid plastics in the side windows of buses. Specifically, you ask whether the amendment includes school buses and whether plastic glazing would be allowed in entrance doors and in rear emergency doors of school buses.

Safety Standard No. 205 was amended to permit the use of rigid plastic glazing in all doors and windows of buses, except windshields or in windows to the immediate right or left of the driver (42 FR 61465, December 5, 1977). This amendment is applicable to school buses, since they are a special sub-category of "bus." The plastic glazing would not be allowed in a bus entrance door since this would constitute a "window to the immediate right" of the driver. Plastic glazing would be allowed in the rear emergency door, however, since that location was not excepted in the amendment.

Please contact Hugh Oates of this office if you have any further questions (202-426-2992).

Sincerely,

ATTACH.

STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS

Department of Transportation

July 12, 1976

Joseph J. Levine -- Chief Counsel, N.H.T.S.A.

RE: Docket No. 71-1; Notice 06 Final Rule, Glazing Materials. Amended Safety Standard No. 205

Dear Sir:

During a recent telephone conversation with Ms. Nancy Egar it was suggested that I submit my request for an interpretation of the above mentioned amendment relative to glazing material to be used with the use of school buses.

In preparing our school bus inspection for the start of the September 1978 school year, I am in need of guidelines in interpreting whether or not rigid plastic glazing material is allowed for use in the school buses in particular locations such as the rear emergency door which is a visible location via the rear view mirror and the entrance door which is a visible location for children prior to the door being opened. Further to this, the overall amendment includes buses but I was wondering if school buses per say may be exempt in the interpretation of the word bus.

I would appreciate your reviewing the above comments and notifying me in writing as to the N.H.T.S.A. interpretation relative to these questions as soon as possible so that I in turn may respond to the school bus owners before August 15, 1978.

Sincerely yours, Alfred Massarone, Chief -- MOTOR VEHICLE SAFETY AND EMISSION CONTROL DIVISION

ID: nht78-3.30

DATE: 12/13/78

FROM: AUTHOR UNAVAILABLE; J. J. Levin, Jr.; NHTSA

TO: Cars & Concepts, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your December 4, 1978, letter concerning the applicability of Safety Standard No. 205, Glazing Materials, to applied windshield tint bands.

I am enclosing copies of two previous letters of interpretation by the agency regarding polyester films that appear to be similar to the product you describe. I think these letters will answer all of your questions. If not, please contact Hugh Oates of my office at 202-426-2992.