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Keywords: Solar absorption, inorganic coating, rail temperature, thermal stress, track buckling, zero-volatile organic content, VOC, rail neutral temperature, RNT
Abstract: This report documents Rutgers University’s research in the development and demonstration of an inorganic coating for reducing peak rail temperature to inhibit rail buckling. The...
Field Demonstration of Geocell Track Substructure Support System Under High-Speed Passenger Railroad Operations
Keywords: Track geometry, high-speed track, track quality index, TQI, ballast, sub-ballast, subgrade, Surfacing Cycle, geocell, Neoweb™, Amtrak, Northeast Corridor, NEC
Abstract: Regions of track, which experience high rates of track geometry degradation, tend to require frequent maintenance interventions that are typically surfacing or tamping. Harsco...
Keywords: DOTX 218, gage restraint measurement system, GRMS, track strength, track performance characterization, Downeaster-Portland North
Abstract: This report summarizes the results from a May 12, 2014, survey conducted with the Federal Railroad Administration’s (FRA) gage resistant measurement system vehicle (GRMS), DOTX...
Evaluation of the Degradation of Concrete Ties Using Machine Vision Technology on High-Speed Rail Corridors
Keywords: Concrete tie, concrete crosstie, tie degradation, cracked tie, concrete tie conditions, tie maintenance, tie replacement, tie inspection, tie grading, tie assessment, Northeast Corridor, concrete tie grades
Abstract: ENSCO, Inc. used machine vision technology to assess concrete tie degradation in Amtrak’s high-speed Northeast Corridor (NEC) over a 13-month period. The study examined three...
Policy and Guidance
Revised Positive Train Control Guidance Regarding Interoperability Testing, Operations and Maintenance Manuals, and Certification Responsibilities
Keywords: Positive Train Control, Interoperability, Testing,
Abstract: In January and February 2017, FRA issued three guidance letters regarding positive train control (PTC) system interoperability testing; Operations and Maintenance Manual (OMM)...