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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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29
Sep
2023
Technical Reports
Development of a Bayesian Network-Based Accident Model for Hazmat Unit Trains
Subject
Hazardous Materials,
Rolling Stock
Keywords: Risk analysis, unit trains, hazmat
Abstract: The objective of this research project was to develop a predictive risk model for the release of hazardous material transported in unit trains using data science techniques for...
Report Number
DOT/FRA/ORD-23/37
Office
RDI-22
29
Sep
2023
Technical Reports
I-ETMS™ Positive Train Control Passenger Braking Algorithm Enhancement – Phase II
Subject
Positive Train Control
Keywords: Positive Train Control, PTC, braking, braking algorithm enhancements, field testing, Electric Multiple Unit, EMU, Diesel Multiple Unit, DMU, enforcement algorithm, enforcement algorithms, EA
Abstract: The Federal Railroad Administration (FRA) funded Transportation Technology Center, Inc. (TTCI) to examine the performance benefits of four potential modifications to the...
Report Number
DOT/FRA/ORD-23/36
Office
RDI-23
28
Sep
2023
Technical Reports
Automated Train Operation Interface Requirements Specification Development Summary Report
Subject
Train Control
Keywords: Automated Train Operation, ATO, Automated Train Operation Support Operation Support System Back Office, ATOSS BO Interface Requirement Specification, IRS, Interoperable Train Control Automated Train Operation Executive, ITC-ATO Ex, Interoperable Train Con
Abstract: The Federal Railroad Administration contracted Transportation Technology Center, Inc. to define Interface Requirement Specification (IRS) documents for an Interoperable Train...
Report Number
DOT/FRA/ORD-23/31
Office
RDI-23
28
Sep
2023
Technical Reports
Enhancing the Safety of Coupler Knuckles
Subject
Rolling Stock
Keywords: Coupler, knuckle, failure, fatigue, fracture, life calculation, load case combination, stress, tensile strength, train operation
Abstract: The primary objective of this research was to validate the finite element (FE) stress levels obtained during previous research through physical testing of a selected knuckle...
Report Number
DOT/FRA/ORD-23/32
Office
RDI-22
28
Sep
2023
Technical Reports
Bearing Grease Degradation Related to Water and Roller Bluing
Subject
Rolling Stock
Keywords: Coupler, knuckle, failure, fatigue, fracture, life calculation, load case combination, stress, tensile strength, train operatio Roller bearings, water-etch, non-verified bearing failure, testing, rolling stock, lube stain, grease
Abstract: The Federal Railroad Administration sponsored a team from Transportation Technology Center, Inc. to conduct two investigations to improve the safety of roller bearing...
Report Number
DOT/FRA/ORD-23/33
Office
RDI-22
21
Sep
2023
Technical Reports
Vertical Split Rim: Causes and Prevention
Subject
Rolling Stock
Keywords: Vertical split rim, VSR, wheel cracks, finite element analysis, FEA, residual stress, fatigue damage models, finite element, FE
Abstract: Vertical split rim (VSR) is a serious railway wheel failure mode that requires further research. Visual clues are not usually present until the crack propagates through the rim...
Report Number
DOT/FRA/ORD-23/30
Office
RDI-22
15
Sep
2023
Technical Reports
Vehicle Dynamics Models for Derailment Incident Investigation
Subject
Rolling Stock
Keywords: Derailment, freight car dynamics, vehicle dynamics, VAMPIRE simulations, vehicle track interaction, wheel rail interaction
Abstract: When investigating a train derailment, vehicle/track interaction (VTI) using vehicle dynamics simulations of the key vehicles in the derailed train can help identify specific...
Report Number
DOT/FRA/ORD-23/27
Office
RDI-22
15
Sep
2023
Technical Reports
Office Safety Checker for Moving Block Train Control Systems
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
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
13
Sep
2023
Technical Reports
High-Strength, Reduced-Modulus, High-Performance Concrete for Prestressed Concrete Crosstie Applications
Subject
Track
Keywords: Concrete, crosstie, weathered aggregate, granite, modulus
Abstract: High-performance concrete (HPC) with early strength development is the material of choice for fabricating prestressed concrete railroad ties. However, the higher strength of...
Report Number
: DOT/FRA/ORD-23/26
Office
RPD-21