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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Full Moving Block Concept and Requirements Specification for Railroad Operations

Document Series
Technical Reports
Federal Railroad Administration
Report Number
Subject Communications, Train Control
Full Moving Block, FMB, Interoperable Train Control (ITC), Overlay Positive Train Control (O-PTC), Quasi-Moving Block (QMB), Alternative Broken Rail and Rollout Detection/Alternative Broken Rail Detection (ABRRD/ABRD)

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Last updated: Tuesday, January 16, 2024