Interpretation ID: nht71-4.36

DATE: 11/01/71

FROM: AUTHOR UNAVAILABLE; Lawrence R. Schneider; NHTSA

TO: Renault, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: We regret the continuing difficulty of communication concerning paragraph S4.1.2.2 of Standard No. 208. As we understand the question stated in your letters of September 14 and October 11, 1971, you have asked whether a passenger car that has passive 3-point belts at the front positions and that conforms to S4.1.2.2(b) by use of these belts will also have to have Type 1 belts at those positions and conform to S4.1.2.2(c).

It was our intent in adopting the passive seat belt requirement, S4.5.3 to permit manufacturers to substitute a Type 1 passive assembly or a Type 2 passive assembly with detachable or non-detachable shoulder belt for any assembly under an option that specifies a Type 1 assembly or a Type 2 assembly with detachable shoulder belt. Therefore, even though the assemblies specified under S4.1.2.2 are required to be Type 1 or Type 2 with detachable shoulder belts, a passive assembly used in place of any belt under S4.1.2.2 could have a non-detachable shoulder belt. In the light of questions rained by Renault and others, we are considering an amendment to S4.5.3 to clarify this point.

With specific reference to your question, a 3-point passive assembly may be used to meet the passive protection requirements of S4.1.2.2(b). Such an assembly(Illegible Word) not have a detachable shoulder belt. Since S4.5.3 provides that it may be used in

place of a Type 1 assembly, the passive assembly may be used in its 3-point configuration to meet the requirements of S4.1.2.2(c). The effect of using a 3-point passive assembly to meet subparagraph (c) is to make the test requirements of (b) and (c) identical.

Please advise us if further clarification is necessary.