Positive Train Control Braking Algorithm Evaluation Methodology Enhancement

Federal Railroad Administration2020PDFTech ReportPate, ShadAnaya, RachelHolcomb, MatthewTransportation Technology Center, Inc.United States. Department of Transportation. Federal Railroad Administration. Office of Railroad Policy and DevelopmentUnited States. Federal Railroad Administration. Office of Research, Development, and TechnologyUnited States. Federal Railroad Administration. Office of Railroad Policy and DevelopmentUnited States. Department of Transportation. Federal Railroad Administration. Office of Research, Development, and TechnologyUnited StatesAlgorithmsBrakingFreight trainsPositive train controlPTChead endHEbraking algorithmsimulationenforcementfreightDOT/FRA/ORD-20/27DTFR5311D00008L, Task Order F00782Withers,JaredTechnical Report, September 11, 2017\u2013March 10, 2019This report describes the investigation and implementation of changes performed by Transportation Technology Center, Inc. (TTCI) to improve the efficiency and capabilities of the current Positive Train Control (PTC) braking algorithm evaluation methodology for freight operations. Improvements included: Simulated cases with an addition of PTC enforcement warnings and enabling analysis of the results with a railroad network model. A determination of whether additional granularity is needed in scenarios that represent common industry operations. Modified the simulation process to increase simulation efficiency, which will decrease time and labor to complete PTC enforcement braking algorithm evaluations.99