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Variable Amplitude Fatigue Crack Growth Characteristics of Railroad Tank Car Steel: Volume III

The load history that railroad tank cars experience has a significant variable amplitude characteristic. Although previous efforts have been directed toward understanding baseline fatigue crack growth behavior of TC-128B steel as a function of material lot, orientation, and environment, little is...

Human Factors Root Cause Analysis of Accidents/Incidents Involving Remote Control Locomotive Operations

This report presents findings from a human factors root cause analysis (RCA) of six train accidents/incidents—collisions, derailments, and employee injuries—that involved remote control locomotive (RCL) operations in U.S. railroad switching yards. Descriptive data from participating railroads...

Investigation of Cracks in Acela Coach Car Brake Discs: Test and Analysis Volume II - Appendices

In April 2005, visual and laboratory tests identified cracks in the spokes of several brake discs on coach cars within Amtrak’s Acela trainsets, the high-speed trainsets operating on the Northeast Corridor. Amtrak halted operations of the Acela fleet until an assessment of the cracked spokes...

Investigation of Cracks in Acela Coach Car Brake Discs: Test and Analysis Volume I - Final Report

Remote Control Locomotive Operations: Results of Focus Groups with Remote Control Operators in the United States and Canada

This report presents findings from focus groups with remote control operators (RCOs) in the United States and Canada. The purpose was to learn more about remote control locomotive (RCL) operations safety-related issues, lessons learned, and best practices from those most familiar with the...

A Comparative Risk Assessment of Remote Control Locomotive Operations versus Conventional Yard Switching Operations

This report presents a comparative risk assessment of U.S. remote control locomotive (RCL) and conventional yard switching operations. First, a hierarchical task analysis (HTA) was conducted to provide a detailed description of yard switching tasks. Based on the HTA results, a preliminary hazard...

Rail Crew Resource Management (CRM): Survey of Teams in the Railroad Operating Environment and Identification of Available CRM Training Methods

This report summarizes the work undertaken by the Texas Transportation Institute to document the common teams or crews that are present within the rail industry and to evaluate the existing crew resource management (CRM) training methods used in other industries for their applicability to those...

Survivability of Railroad Tank Car Top Fittings in Rollover Scenario Derailments

This project examined the structural susceptibility of tank car fittings during derailments. The report identified non-pressure cars as being the most susceptible to derailment damage. A DOT111A100W1 fuel service car was selected for analysis. Two derailment scenarios were modeled. The first...

Damage Assessment of Railroad Tank Cars Involved in Accidents: Phase I - Literature Search and Evaluation

Transportation Technology Center, Inc., a subsidiary of the Association of American Railroads, is conducting a research project titled, "Damage Assessment of Tank Cars Involved in Accidents." Phase I of the project evaluated the validity of guidelines currently used to assess the severity of...

Development of Gage Widening Projection Parameter for the Deployable Gage Restraint Measurement System

Recent gage restraint measurement system (GRMS) developments include the redesign of GRMS vehicles to conduct testing from a deployable axle instead of using freight truck mounted axle and GRMS on hi-rail vehicles. This new test configuration results in boundary condition changes in the applied...

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