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17
May
2024
Technical Reports
Reference Document: Reducing Hazards Associated with Visual and Automation-Aided Track Inspections: Supplementary Information
Subject
Track
Keywords: Track research, track inspection, inspection, automated inspection, automation-aided inspection, railroad, track safety, safety, human factors, passenger rail, systems-theoretic process analysis, STPA, STAMP, track geometry measurement system, TGMS, aTGMS
Abstract: This document provides supplementary information to accompany the previously published Federal Railroad Administration (FRA) report titled Reducing Hazards Associated with...
Report Number
Supplementary Reference Document for DOT/FRA/ORD-2
Office
RDI-21
17
May
2024
Technical Reports
Aerodynamic Assessment and Mitigation – Design Considerations for High-Speed Rail
Subject
Track
Keywords: High-speed rail, train aerodynamics, train slipstream, pressure pulse, tunnels, passenger safety, passenger comfort, ballast flight, aerodynamic drag, crosswinds, aerodynamic testing, aerodynamics, aerodynamic assessment
Abstract: This report presents the means to identify and assess impacts and mitigation methods for aerodynamic effects of high-speed trains on high-speed rail corridors for designers,...
Report Number
DOT/FRA/ORD-22/28
Office
RDI-21
17
May
2024
Technical Reports
Advanced Modeling of Wheel-Rail Friction Phenomena
Subject
Track
Keywords: wheel-rail contact, creep force, friction, interfacial layer, simulation
Abstract: From 2017–2019, the Federal Railroad Administration sponsored VORtech and its project partners to develop advanced physics-based modeling of wheel-rail friction. Sub-models...
Report Number
DOT/FRA/ORD-24/18
Office
RDI-21
12
Apr
2024
Technical Reports
Restricted Speed Enforcement for Positive Train Control Systems
Subject
Communications,
Train Control
Keywords: Restricted speed, Positive Train Control, PTC, risk, operation capacity, benefit-cost analysis, BCA, benefit-cost ratio, BCR
Abstract: As defined by current regulations (Title 49 Code of Federal Regulations [CFR] 236 Subpart G), restricted speed is a speed that will permit stopping within one-half the range of...
Report Number
DOT/FRA/ORD-24/15
Office
RDI-23
22
Mar
2024
Technical Reports
Detailed Puncture Analyses of Tank Cars: Analysis of Different Impactor Threats and Impact Conditions
Subject
Hazardous Materials
Keywords: Tank car, Impactor, derailment, hazardous materials, hazmat
Abstract: There has been significant research in recent years to analyze and improve the impact behavior and puncture resistance of railroad tank cars. Much of this research has been...
Report Number
DOT/FRA/ORD-13/17 Revision 1
Office
RRD