State, most restrictive.
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Law
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CFR 49
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Transportation
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Other Regulations Relating to Transportation
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Federal Railroad Administration, Department of Transportation
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Rules, Standards, and Instructions Governing the Installation, Inspection, Maintenance, and Repair of Signal and Train Control Systems, Devices, and Appliances
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Definitions
- State, most restrictive.
The mode of an electric or electronic device that is equivalent to a track relay in its deenergized position.
[49 FR 3388, Jan. 26, 1984]
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