Interpretation ID: nht76-2.6

DATE: 03/15/76

FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA

TO: Alberto Negro - FIAT

TITLE: FMVSS INTERPRETATION

TEXT: This is in response to your letter of November 6, 1975, requesting an interpretation of paragraph S5. of Motor Vehicle Safety Standard No. 219, Windshield Zone Intrusion.

You asked whether the standard permits marking or penetration of the protected zone to a depth greater than 1/4 inch, by windshield wipers during a barrier crash test. Please excuse our delay in answering your question.

Paragraph S5. of Standard No. 219 states that "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" (emphasis added.) Windshield wipers are "components designed to be normally in contact with the windshield." Therefore, Standard No. 219 does allow penetration of the protected zone by windshield wipers during the barrier crash test.

Please note that Standard No. 219 was amended, Docket 74-21, Notice 3, to substitute the term "daylight opening" for "windshield opening", and to add the new term to the requirements of paragraph S5. The amendments are effective September 1, 1976, for passenger cars, and September 1, 1977, for multipurpose passenger vehicles, trucks and buses. I am enclosing a copy of the notice for your information.

Please contact us if we can of any further assistance.

YOURS TRULY,

RESEARCH & DEVELOPMENT - U.S.A. BRANCH

November 6, 1975

Richard Dyson Assistant Chief Counsel Department of Transportation N.H.T.S.A.

We are kindly requesting your official interpretation of the Paragraph S.5 of the Standard 219 - "Windshield Zone Intrusion":

". . .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, affixed according to S6, to a depth of more than one-quarter inch, and no such part of a vehicle shall penetrate the inner surface of that portion of the windshield below the protected zone defined in S6."

The windshield wipers of a vehicle, that are normally in contact with the windshield under barrier crash condition could become detached from the windshield and spring back after impact penetrating the protected area for a depth of more than one-quarter inch or leave a light mark on the windshield surface.

In our opinion such penetration or marking is permitted by the Std. 219 and does not represent any safety hazard. We would appreciate your prompt reply with the official NHTSA interpretation on the matter.

Alberto Negro Director