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Interpretation ID: nht72-1.10

DATE: 10/06/72

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

TO: Minnesota Automotive, Inc.

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to your letter of September 19, 1972, asking whether the new hydraulic brake safety standard precludes the provision of a device using the service brake pressure to supplement normal parking brake performance.

Standard No. 105a does not prohibit the inclusion of such a device as original equipment in a motor vehicle, provided that the vehicle can meet the parking brake system requirements of the standard using the mechanical system alone.