Technical Reports
Subsurface Evaluation of Railway Track Using Ground Penetrating Radar
This report details the implementation of 2 GHz horn antennas for measuring working ballast thickness using ground penetrating radar and the initial implementation of a 500 MHz horn antenna used for subballast and subgrade characterization. The work was performed as part of the first task order and...Interoperable Communications-based Signaling Project
Interoperable Communication-Based Signaling (ICBS) refers to an implementation of a train control system based on signaling principles whose system architecture and interface are documented as Recommended Practices (from the AREMA Manual of Recommended Practices for Communications and Signaling) by...Development of an Adaptive Predictive Braking Enforcement Algorithm
Predictive enforcement braking is one of the key concepts behind positive train control (PTC) systems. If a train is on the verge of overrunning a target stopping location, such as an authority limit, the system enforces a brake application to stop the train safely short of the limit. The concept...Occupant Protection Experiments in Support of A Full-Scale Train-to-Train Crash Energy Management Equipment Collision Test
The Federal Railroad Administration sponsored a full-scale train-to-train crash energy management (CEM) technology test that was conducted on March 23, 2006, at the Transportation Technology Center in Pueblo, Colorado. The Volpe National Transportation Center directed and coordinated the...A Practical Risk Assessment Methodology for Safety-Critical Train Control Systems
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