Broken Rail and Rollout Detection to Support QMB Operations

Details

• Creators:
  Kindt, Joel ; Khater, Mohamad ; Li, Xu ; Vieira, Paulo ; Polivka, Alan
• Corporate Creators:
  Transportation Technology Center, Inc.
• Corporate Contributors:
  United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and Development ; United States. Department of Transportation. Federal Railroad Administration. Office of Research, Development and Technology
• Subject/TRT Terms:
  • Positive train control
  • Moving block control
  • Track circuits
  • Railroad traffic control devices
  • Block control systems Quasi-Moving Block
  • QMB
  • next generation track circuit
  • track circuit enhancements
• Publication/ Report Number:
  DOT/FRA/ORD-22/27
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  09/2019 – 01/2021
• Contracting Officer:
  Withers, Jared
• Corporate Publisher:
  United States. Department of Transportation. Federal Railroad Administration
• Abstract:
  Researchers collaborated with a railroad advisory group to demonstrate the validity of a track circuit concept that supports the Quasi-Moving Block (QMB) method of train control. They performed proof-of-concept testing, capacity analysis, hazard analysis, and requirements development. QMB is one of three new additional modes of train control that have been identified as an evolution of today’s Positive Train Control (PTC); namely, Enhanced Overlay PTC (EO-PTC), QMB, and Full Moving Block (FMB). QMB inherits the capacity benefits of EO-PTC and provides additional safety benefits compared to PTC. However, QMB remains limited by the fixed track circuit blocks and does not provide significant capacity benefits beyond EO-PTC unless supplemented by potential modifications to track circuits that, together with QMB and vital rear-of-train location, provide further capacity benefits.
• Format:
  PDF
• Funding:
  DTFR5311D00008L
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/62815/dot_62815_DS1.pdf
• File Type:
  [PDF - 2.51 MB]
• Collection(s):
  Federal Railroad Administration
• Main Document Checksum:
  urn:sha-512:dc50c03051c31a17574532afe560a1ea28d72f6fe98b8fac81e27b3aed74fe4fe7805b237fc0c0a4f02c1a8e41d44f7f9e08c05339a7cfaa0aefbb5e9cd12f7a