Interpretation ID: nht95-2.97

TYPE: INTERPRETATION-NHTSA

DATE: May 25, 1995

FROM: Kenneth Zawlocki

TO: Chief Counsel

TITLE: Re: US DOT - NHTSA - FMVSS218

ATTACHMT: ATTACHED TO 8/29/95 LETTER FROM JOHN WOMACK TO KENNETH ZAWLOCKI (REDBOOK 2; STD. 218)

TEXT: It is my interpretation of FMVSS218 that the Helmet Penetration Test is for the outer shell of the helmet and the Impact Attenuation Test is for the inner proctectant. Of course the Retention Test is for the straps that hold the helmet on the head. I c annot find any specifications as to what kind or how much material is to be used in the manufacturing of said helmets. Also, there is no specific language to the effect the helmet may not be covered with materials such as wigs, caps, cloth, etc. Theref ore, would you please clarify the following points for me:

1. Is the Penetration Test (S7.2) for testing the penetration of the outer shell?

2. Is the Impact Attenuation Test (S7.14) for testing types of impact material to prevent head injuries?

3. Is the Retention Test (S7.3) for testing straps that retain the brim of the helmet onto the head?

4. Are there any specifications in FMVSS218 as to what type and how much material can be used in the manufacturing of helmets?

5. Are there any stipulations in FMVSS218 that you cannot decorate a helmet with any material (leather, cloth), wigs, flowers, decals, hats, etc.?

I look forward to your reply; thank you for your assistance in this matter.