eLibrary Search
The FRA eLibrary contains all the documents that are found throughout the FRA Public Website. Multiple pages on the website may link to the same eLibrary item based on its set of metatdata.
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6
Mar
2020
Technical Reports
Positive Train Location End-of-Train Final Report
Subject
Train Control
Keywords: Positive Train Location, PTL, end-of-train device, ETD, End of Train, EOT, Head of Train, HOT, Positive Train Control, PTC, Global Navigation Satellite System, GNSS, Global Positioning System, GPS
Abstract: The overall goal of the Positive Train Location (PTL) end-of-train (EOT) project was to build on the successes of the PTL Phase II project and further refine the use cases,...
Report Number
DOT/FRA/ORD-20/11
Office
RDI-23
6
Mar
2020
Technical Reports
Railroad Wireless Communications Roadmap
Subject
Train Control
Keywords: Dense urban area, DUA, Differential Quadrature Phase Shift Keying, DQPSK, radio frequency, RF, interoperable train control, ITC, Positive Train Control, PTC, Hata Equation, quadrature amplitude modulation, QAM, wireless communications, application message
Abstract: The Federal Railroad Administration (FRA) sponsored a project conducted by Transportation Technology Center, Inc. (TTCI) to analyze railroad wireless communication needs and...
Report Number
DOT/FRA/ORD-20/10
Office
RDI-23
6
Mar
2020
Technical Reports
Impact Test Data Analysis for Load Environment Characterization of Tank Car Stub Sill During Yard Operations
Subject
Hazardous Materials
Keywords: Tank cars, rail, stub sill failures, impact test, yard operation, car coupling, draft gear, instrumented couplers, hazardous materials
Abstract: Fractures in the stub sills of tank cars pose a significant problem for the rail industry due to the potential for damage to the tank structure and eventual release of the...
Report Number
: DOT/FRA/ORD-20/09
Office
RDI-22
5
Mar
2020
Technical Reports
Laser Triangulation for Track Change and Defect Detection
Subject
Track
Keywords: Laser triangulation, algorithms, change detection, safety, operational efficiency, inspection
Abstract: Pavemetrics Systems Inc. teamed with Amtrak to demonstrate the feasibility of automated track change detection using its Laser Rail Inspection System (LRAIL). LRAIL is a rail...
Report Number
DOT/FRA/ORD-20/08
Office
RDI-21
18
Feb
2020
Technical Reports
Relationship Between Track Geometry Defects and Measured Track Subsurface Condition
Subject
Track
Keywords: Railroad, track, track geometry, Ground Penetrating Radar, GPR, big data, ballast fouling index, BFI, ballast layer thickness, BLT, Logistic Regression, LR, research, study
Abstract: This report presented the results of a comprehensive study regarding the development of a probability model for occurrence of track geometry defects as a function of key...
Report Number
DOT/FRA/ORD-20/07
Office
RDI-21
14
Feb
2020
Technical Reports
Methods for Evaluation of Track Inspection Technology Effectiveness
Subject
Track
Keywords: Correlation, receiver operating characteristics, probability of detection, repeatability, reproducibility
Abstract: Guidelines, including recommendations for sample size, are needed in the design of track inspection technology evaluation tests. This report provides and overview of...
Report Number
DOT/FRA/ORD-20/03
Office
RDI-21
14
Feb
2020
Technical Reports
Evaluation of Risk Acceptance Criteria for Transporting Hazardous Materials
Subject
Rolling Stock
Keywords: Liquefied natural gas, LNG, safety assessments, dual-fuel, compressed natural gas, CNG, risk criteria, quantitative risk assessment, QRA, locomotive, hazardous materials, rolling stock
Abstract: This report reviews and offers recommendations from Sandia National Laboratories of risk acceptance criteria for the transportation of hazardous materials in the U.S. The risk...
Report Number
DOT/FRA/ORD-20/06
Office
RDI-22
10
Feb
2020
Technical Reports
Cant Excess for Freight Train Operations on Shared Track
Subject
Track
Keywords: Cant excess, cant deficiency, superelevation, shared track
Abstract: Transportation Technology Center, Inc., with Federal Railroad Administration support, conducted a study to review and summarize current practices and issues related to shared...
Report Number
DOT/FRA/ORD-20/05
Office
RDI-21
10
Feb
2020
Technical Reports
Laboratory Study of the Failure Characteristics of Fouled Ballast: Phase II
Subject
Track
Keywords: Railroad, track, substructure, ballast, fouling, water content, loading, laboratory test, box test, triaxial test, box test
Abstract: This report presents the results of a series of triaxial tests and modified box tests performed on abraded ballast at the University of Massachusetts Amherst. While Phase I...
Report Number
DOT/FRA/ORD-20/04
Office
RDI-21
29
Jan
2020
Technical Reports
Fire Performance of a UN-T75 Portable Tank Phase 1: Loaded with Liquid Nitrogen
Subject
Hazardous Materials
Keywords: Liquefied natural gas, LNG, liquid nitrogen, LN2, ISO UN-T75 tank, flatcar, pressure relief valve, PRV, pressure relief device, PRD, directional flame thermometer, DFT, incident heat flux, surface temperature, hazardous materials
Abstract: Southwest Research Institute (SwRI) fire-tested a portable tank (filled with liquid nitrogen [LN2]) and observed the demonstration of the performance of the pressure relief...
Report Number
DOT/FRA/ORD-20/02
Office
RDI-22