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Technical Reports

Weld Repair of Manganese Frogs for Enhanced Performance

When special trackwork contact surfaces (such as manganese-steel turnout frogs) become worn and damaged, they can be repaired to extend their lifetime, but current repair methods typically cannot return these surfaces to their original durability. Since worn or damaged frogs in freight and...

Side Impact Test and Analysis of a DOT-112 Tank Car

As part of a program to improve transportation safety for tank cars, Transportation Technology Center, Inc. (TTCI) has conducted a side impact test on a DOT-112 tank car to evaluate the performance of the DOT-112 under dynamic impact conditions and to provide data for the verification and...

Railroad Classification Yard Technology. Design Methodology Study.

Even after bypass and intermodal train operations are fully exploited by railroads, it is clear that the railroad yard will continue to be an important factor in railroad operations because of the wide dispersal of traffic origination and destination points and the low car count of aver age...