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7
Sep
2023
Technical Reports
Characterization of Track Geometry for Various Operational Conditions
Subject
Track
Keywords: Track geometry, track quality, track irregularities, space curve, Automated Track Inspection Program, ATIP, Power Spectral Density, PSD, clustering
Abstract: This report characterizes the amplitude and wavelength content of the current track geometry environment of the United States railroad system and examines the combination of...
Report Number
DOT/FRA/ORD-23/25
Office
RDI-22
21
Aug
2023
Technical Reports
Autonomous Inspection System Based on Passive Sensing and Anomaly Detection
Subject
Track
Keywords: Ballast moisture monitoring, fouled ballast monitoring, passive sensing system, frequency doubling reflectenna, sequential change detection, deep neural networks, machine learning, artificial intelligence, high-frequency electrical simulation models
Abstract: Detecting poor track conditions before they become safety-critical is essential for improving the safety and efficiency of railroads. To this end, autonomous track inspection...
Report Number
DOT/FRA/ORD-23/23
Office
RDI-21
11
Aug
2023
Technical Reports
Augmented Reality for Railroad Operations Using Head-up Displays
Subject
Human Factors
Keywords: KEYWORDS: Augmented reality, head-up displays, eye tracking, head tracking, locomotive, cognitive evaluation, train simulator, human factors
Abstract: A team from MIT’s Human Systems Laboratory designed the locomotive HUD as a wide field of view augmented reality head-up display (...
Report Number
DOT/FRA/ORD-23/20
Office
RDI-24
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
11
Jul
2023
Technical Reports
Development of an Operationally Efficient PTC Braking Enforcement Algorithm for Freight Trains
Subject
Positive Train Control
Keywords: Braking algorithm, enforcement algorithm, positive train control, PTC, train control, simulation, Monte Carlo simulation, adaptive enforcement algorithm, emergency brake backup
Abstract: Software algorithms used in positive train control (PTC) systems designed to predict freight train stopping distance and enforce a penalty brake application have been shown to...
Report Number
DOT/FRA/ORD-13/34
Office
RRD