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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
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
9
Apr
2024
Final Rule
49 CFR Part 218: Train Crew Size Safety Requirements
Keywords: Train Crew Size
Abstract: FRA is establishing minimum safety requirements for the size of train crews
depending on the type of operation. This final rule requires railroad operations to have a
...
7
Mar
2024
Technical Reports
External Perception for Locomotives: Systems and Algorithm Development
Subject
Human Factors
Keywords: Deep learning, deep neural net, object detection, perception, cab technology integration lab, operator fatigue, operator distraction
Abstract: The Federal Railroad Administration sponsored a research team from Aurora Flight Sciences to develop the External Perception for Locomotives (ExP-L) system, which uses the FRA...
Report Number
DOT/FRA/ORD-24/13
Office
RDI-24
15
Feb
2024
Technical Reports
Impact of Advanced Train Control Technologies on Rail Network Safety and Operational Performance
Subject
Rolling Stock
Keywords: Advanced braking system, ABS, braking characteristics, freight train, network capacity, network velocity, passenger train, Positive Train Control, PTC, shared corridor, track utilization, train delay
Abstract: From September 2018 to September 2021, the Federal Railroad Administration contracted Sharma & Associates to conduct an analysis of simulation results from a 5,000-mile...
Report Number
DOT/FRA/ORD-24/10
Office
RDI-22