Business · 11/07/1994Updated: 10/16/2026 · 1 min read

Federal Motor Vehicle Safety Standards; Air Over Hydraulic Brake Systems

The National Highway Traffic Safety Administration proposes to amend Standard No. 121, Air Brake Systems, to include a definition of air-over-hydraulic brake subsystems, in response to a petition by John Kourik.

Original source language: Federal Register — National Highway Traffic Safety AdministrationOpen original release →

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