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11
Aug
2023
Technical Reports
Measurement and Characterization of Track Geometry Data: Literature Review and Recommendations for Processing FRA ATIP Program Data
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
27
Jul
2023
Technical Reports
Locomotive Crash Energy Management Vehicle-to-Vehicle Tests 1 & 2: Analyses and Test Results
Keywords: Locomotives, crashworthiness, railcars, couplers, crash energy management, push-back coupler, deformable anti-climber, override, collision, injury, impacts
Abstract: Crash energy management (CEM) components which can be integrated into the end structure of a locomotive were developed: a push-back coupler and a deformable anti-climber. These...
Report Number
DOT/FRA/ORD-23/20
Office
RDI-22
21
Jul
2023
Research Results
Modeling Track Mechanical Behavior with Under Tie Pads and Under Ballast Mats
Subject
Track
Keywords: Under Tie Pads, Under Ballast Mats, Finite Element Analysis
Abstract: Under the sponsorship of the Federal Railroad Administration (FRA), researchers at the Volpe National Transportation Systems Center developed a finite element (FE) track model...
Report Number
RR 23-10
Office
RDI-21
17
Jul
2023
Technical Reports
Fully Scalable Train Braking Simulation Environment
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
14
Jul
2023
Research Results
Development Length Variables in Pretensioned Concrete Ties
Subject
Track
Keywords: : railroad ties, indented wire geometry, development length, flexural capacity, prestressed concrete, moment capacity
Report Number
RR 23-09
Office
RPD-21