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Technical Reports

Tank Car Vent and Burn Process Study: Phase I

The Transportation Technology Center, Inc. (TTCI), under Federal Railroad Administration’s (FRA) Hazmat Transportation Safety Research and Development Strategic Plan, conducted a study of vent and burn as a method of hazardous materials incident mitigation. The purpose of the study was to...

Tank Car Vent and Burn Process Study: Phase II

The Transportation Technology Center, Inc. (TTCI), under the Federal Railroad Administration’s Hazmat Transportation Safety Research and Development Strategic Plan, conducted a study of vent and burn as a method of hazardous materials incident mitigation. The purpose of the study was to develop...

Improved Polymer Composite Tie Performance

For regions experiencing high rot and decay, engineered-polymer composite (EPC) ties offer a potential alternative to solid-sawn timber ties. However, these ties have a history of inconsistent performance and existing AREMA laboratory qualification testing have not proven effective in...

Restricted Speed Enforcement for Positive Train Control Systems

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 vision, but does not exceed 20 mph. In the U.S., restricted speed operation is a common type of train operation on...

External Perception for Locomotives: Systems and Algorithm Development

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 Cab Technology Integration Lab (CTIL) to demonstrate prototype object operator augmentation. The system can detect and...