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Interpretation ID: nht71-4.50

DATE: 11/17/71

FROM: AUTHOR UNAVAILABLE; J. W. Carson for E. T. Driver; NHTSA

TO: Halfpenny, Hahn & Roche

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to your letters of October 18, 1971, and November 1, 1971, to Mr. Douglas Toms, Administrator, National Highway Traffic Safety Administration, concerning the "Panic-Stop" signal system from Donel Corporation.

You are correct in your interpretation that Federal Motor Vehicle Safety Standard No. 108 is not applicable to the "Panic-Stop" system when this system is not installed on motor vehicles as original equipment. The motor vehicle laws and regulations of the individual States, are, however, applicable to the "Panic-Stop" system when sold and used as aftermarket equipment.