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52550
  
  

  15
Sep
2023
Technical Reports
Office Safety Checker for Moving Block Train Control Systems
Author
          Federal Railroad Administration

Subject
                    Train Control

**Keywords:** Office Safety Checker (OSC), Quasi-moving block (QMB), Full Moving Block (FMB), Interoperable Train Control (ITC), Positive Train Control (PTC), Centralized Interlocking (CIXL)
**Abstract:** As part of a project sponsored by FRA, TTCI developed and analyzed a concept for the Office Safety Checker (OSC) component of the Moving Block Office (MBO), a segment of a...
Report Number
              DOT/FRA/ORD-23/28

  Office
              RDI-23
    15
Sep
2023
Technical Reports
Operational Performance and Reliability, Availability, and Maintainability Analysis Model (OPRAM) Development
Author
          Federal Railroad Administration

Subject
                    Train Control

**Keywords:** Overlay Positive Train Control, Higher Reliability and Capacity Train Control, Enhanced Overlay PTC, Quasi-Moving Block, Full Moving Block, Reliability Availability and Maintainability, Operational Performance
**Abstract:** Transportation Technology Center, Inc. (MxV Rail) conducted a project for the Federal Railroad Administration (FRA) to complete the development of Operational Performance and...
Report Number
              DOT/FRA/ORD-23/29

  Office
              RDI-23
    5
Sep
2023
Technical Reports
Torsional Strength and Stiffness of a Passenger Car Coupling System

Subject
                    Rolling Stock

**Keywords:** Full Scale Testing, H couplers, Coupler Torsion, Torsional Transmission
**Abstract:** Between September 2019 and June 2022, the Federal Railroad Administration (FRA) sponsored a research team from Sharma & Associates to model and test the torsional strength...
Report Number
              DOT/FRA/ORD-23/24

  Office
              RDI-22
    11
Aug
2023
Technical Reports
Measurement and Characterization of Track Geometry Data: Literature Review and Recommendations for Processing FRA ATIP Program Data
Author
          Federal Railroad Administration

Subject
                    Track

**Keywords:** Track geometry, track quality, track irregularities, space curve, Track Quality Index, TQI, Track Geometry Measurement System, TGMS, Automated Track Inspection Program, ATIP, Power Spectral Density, PSD
**Abstract:** From October 2018 to March 2019, the Federal Railroad Administration sponsored Transportation Technology Center, Inc. to conduct a literature review on the methods of...
Report Number
              DOT/FRA/ORD-23/21

  Office
              RDI-21
    17
Jul
2023
Technical Reports
Fully Scalable Train Braking Simulation Environment
Author
          Federal Railroad Administration

Subject
                    Communications

**Keywords:** Fully scalable train braking simulation environment, brake enforcement algorithm, PTC
**Abstract:** Transportation Technology Center, Inc. (MxV Rail), through a research project funded by Federal Railroad Administration (FRA),  developed a Concept of Operations (ConOps...
Report Number
              DOT/FRA/ORD-23/19

  Office
              RDI-23

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