49 C.F.R. § 234.203
Current through November 30, 2024
All control circuits that affect the safe operation of a highway-rail grade crossing warning system shall operate on the fail-safe principle.
49 C.F.R. §234.203
All control circuits that affect the safe operation of a highway-rail grade crossing warning system shall operate on the fail-safe principle.
49 C.F.R. §234.203