Interpretation ID: nht79-4.51

DATE: 01/01/79 EST

FROM: NHTSA

TO: DIETMAR K. HAENCHEN -- ADMINISTRATOR, VEHICLE REGULATIONS VOLKSWAGEN OF AMERICA, INC.

TITLE: A78; STANDARD 115

TEXT: Dear Mr. Haenchen:

This is in response to your letter of September 25, 1979, requesting an interpretation of the term "restraint system type" as contained in Table I of S4.5.2 of Federal Motor Vehicle Safety Standard No. 115. In addition, this is in confirmation of Volkswagen's statement of the conclusions reached in the meeting with Messrs. Carson, Parker and Schwartz of the National Highway Traffic Safety Administration.

The agency has carefully considered your request that "restraint system type" not be interpreted to require a distinction between active and passive belt systems. The agency must deny your request. As the introduction of mandatory passive restraints approaches, information concerning restraint system type is of exceptional importance to the agency. It is important not only to evaluate the overall effectiveness of passive restraints, but also to determine the effectiveness of the various types of passive restraint system types. Consequently, it is necessary that passive belt systems be differentiated from other restraint system types by decoding the vehicle identification number (VIN).

The agency has also considered the alternative Volkswagen suggested which is to submit this information separately to the agency on a magnetic tape. Motor vehicle safety research is carried out by many organizations aside from the NHTSA, however, and Standard No. 115 is intended to make information available to these other researchers as well. Consequently, the agency can not accept the alternative you suggest.