Mechanical locking or same protection effected by circuits.
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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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Interlocking
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Standards
- Mechanical locking or same protection effected by circuits.
Mechanical locking, or the same protection effected by means of circuits, shall be provided.
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