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ThermaDynamics Rail LLC (TDR) developed the Locomotive-Waste Heat Recovery Systems (L-WHRS) formed by high-pressure heat exchangers coupled to a closed-loop Organic Rankine Cycle (ORC). The L-WHRS can be configured to be non-invasively retrofitted onto different types of locomotive engines to...
The industry safety standard for fixed workstation tables on passenger railcars, APTA PR-CS-S-018-13, draft Rev. 2, provides two options for test procedures and requirements when evaluating crashworthy tables for protecting passengers during a collision. MGA Research Corporation performed six...
A previously developed methodology for reducing the physical scale of test articles for fire performance testing of rail car floors was benchmarked using a series of large-scale tests and validated finite element simulations. The simulations showed that the experimental differences between the...
The Federal Railroad Administration (FRA) sponsored a project, performed by Transportation Technology Center, Inc. (TTCI), to research the feasibility of an Onboard Broken Rail Detection (OBRD) concept. A parallel long term track impedance characterization effort was undertaken with the...
The Federal Railroad Administration (FRA) previously demonstrated advanced, remotely controlled, electro-mechanical systems, such as hand brakes, angle cocks, and cut levers that can contribute to increased safety and improved efficiency of freight railroad operations. The main impediment to...
The Federal Railroad Administration (FRA) conducted a side impact test of a surrogate DOT-113 tank car at the Transportation Technology Center, Inc. (TTCI) to evaluate the performance of the tank car under dynamic impact conditions and to provide data for the verification and refinement of a...
This report examines the feasibility of and recommends an acoustical specification for such an optimized horn. The detectability of the horn signal for motorists inside vehicles, the areas of environmental noise impact and occupational noise exposure have been compared for the optimized horn and...
Researchers developed new concepts of train control systems that could potentially offset the negative impacts to train operations introduced by the current implementation of PTC (Overlay PTC). They investigated the effects on railroad network operation caused by the operation of PTC, such as...
Engineers identified potential hazards associated with the use of an adaptive braking enforcement algorithm, quantified risks, and determined potential risk reduction strategies. This report describes the work performed to address the potential causes of safety hazards that differ between...
Future advanced Positive Train Control systems may allow North American railroads to introduce moving blocks with shorter train headways. This research examines how closely following trains respond to different throttle and brake inputs. Using insights from connected automobile and truck...